## Compact a response **post** `/responses/compact` Compact a conversation. Returns a compacted response object. Learn when and how to compact long-running conversations in the [conversation state guide](/docs/guides/conversation-state#managing-the-context-window). For ZDR-compatible compaction details, see [Compaction (advanced)](/docs/guides/conversation-state#compaction-advanced). ### Body Parameters - `model: "gpt-5.4" or "gpt-5.4-mini" or "gpt-5.4-nano" or 89 more or string` Model ID used to generate the response, like `gpt-5` or `o3`. OpenAI offers a wide range of models with different capabilities, performance characteristics, and price points. Refer to the [model guide](/docs/models) to browse and compare available models. - `"gpt-5.4" or "gpt-5.4-mini" or "gpt-5.4-nano" or 89 more` Model ID used to generate the response, like `gpt-5` or `o3`. OpenAI offers a wide range of models with different capabilities, performance characteristics, and price points. Refer to the [model guide](/docs/models) to browse and compare available models. - `"gpt-5.4"` - `"gpt-5.4-mini"` - `"gpt-5.4-nano"` - `"gpt-5.4-mini-2026-03-17"` - `"gpt-5.4-nano-2026-03-17"` - `"gpt-5.3-chat-latest"` - `"gpt-5.2"` - `"gpt-5.2-2025-12-11"` - `"gpt-5.2-chat-latest"` - `"gpt-5.2-pro"` - `"gpt-5.2-pro-2025-12-11"` - `"gpt-5.1"` - `"gpt-5.1-2025-11-13"` - `"gpt-5.1-codex"` - `"gpt-5.1-mini"` - `"gpt-5.1-chat-latest"` - `"gpt-5"` - `"gpt-5-mini"` - `"gpt-5-nano"` - `"gpt-5-2025-08-07"` - `"gpt-5-mini-2025-08-07"` - `"gpt-5-nano-2025-08-07"` - `"gpt-5-chat-latest"` - `"gpt-4.1"` - `"gpt-4.1-mini"` - `"gpt-4.1-nano"` - `"gpt-4.1-2025-04-14"` - `"gpt-4.1-mini-2025-04-14"` - `"gpt-4.1-nano-2025-04-14"` - `"o4-mini"` - `"o4-mini-2025-04-16"` - `"o3"` - `"o3-2025-04-16"` - `"o3-mini"` - `"o3-mini-2025-01-31"` - `"o1"` - `"o1-2024-12-17"` - `"o1-preview"` - `"o1-preview-2024-09-12"` - `"o1-mini"` - `"o1-mini-2024-09-12"` - `"gpt-4o"` - `"gpt-4o-2024-11-20"` - `"gpt-4o-2024-08-06"` - `"gpt-4o-2024-05-13"` - `"gpt-4o-audio-preview"` - `"gpt-4o-audio-preview-2024-10-01"` - `"gpt-4o-audio-preview-2024-12-17"` - `"gpt-4o-audio-preview-2025-06-03"` - `"gpt-4o-mini-audio-preview"` - `"gpt-4o-mini-audio-preview-2024-12-17"` - `"gpt-4o-search-preview"` - `"gpt-4o-mini-search-preview"` - `"gpt-4o-search-preview-2025-03-11"` - `"gpt-4o-mini-search-preview-2025-03-11"` - `"chatgpt-4o-latest"` - `"codex-mini-latest"` - `"gpt-4o-mini"` - `"gpt-4o-mini-2024-07-18"` - `"gpt-4-turbo"` - `"gpt-4-turbo-2024-04-09"` - `"gpt-4-0125-preview"` - `"gpt-4-turbo-preview"` - `"gpt-4-1106-preview"` - `"gpt-4-vision-preview"` - `"gpt-4"` - `"gpt-4-0314"` - `"gpt-4-0613"` - `"gpt-4-32k"` - `"gpt-4-32k-0314"` - `"gpt-4-32k-0613"` - `"gpt-3.5-turbo"` - `"gpt-3.5-turbo-16k"` - `"gpt-3.5-turbo-0301"` - `"gpt-3.5-turbo-0613"` - `"gpt-3.5-turbo-1106"` - `"gpt-3.5-turbo-0125"` - `"gpt-3.5-turbo-16k-0613"` - `"o1-pro"` - `"o1-pro-2025-03-19"` - `"o3-pro"` - `"o3-pro-2025-06-10"` - `"o3-deep-research"` - `"o3-deep-research-2025-06-26"` - `"o4-mini-deep-research"` - `"o4-mini-deep-research-2025-06-26"` - `"computer-use-preview"` - `"computer-use-preview-2025-03-11"` - `"gpt-5-codex"` - `"gpt-5-pro"` - `"gpt-5-pro-2025-10-06"` - `"gpt-5.1-codex-max"` - `string` - `input: optional string or array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 27 more` Text, image, or file inputs to the model, used to generate a response - `string` A text input to the model, equivalent to a text input with the `user` role. - `array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 27 more` A list of one or many input items to the model, containing different content types. - `EasyInputMessage object { content, role, phase, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. Messages with the `assistant` role are presumed to have been generated by the model in previous interactions. - `content: string or ResponseInputMessageContentList` Text, image, or audio input to the model, used to generate a response. Can also contain previous assistant responses. - `TextInput = string` A text input to the model. - `ResponseInputMessageContentList = array of ResponseInputContent` A list of one or many input items to the model, containing different content types. - `ResponseInputText object { text, type }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `ResponseInputImage object { detail, type, file_id, image_url }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: "low" or "high" or "auto" or "original"` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string` The ID of the file to be sent to the model. - `image_url: optional string` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `ResponseInputFile object { type, detail, file_data, 3 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "low" or "high"` The detail level of the file to be sent to the model. Use `low` for the default rendering behavior, or `high` to render the file at higher quality. Defaults to `low`. - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `role: "user" or "assistant" or "system" or "developer"` The role of the message input. One of `user`, `assistant`, `system`, or `developer`. - `"user"` - `"assistant"` - `"system"` - `"developer"` - `phase: optional "commentary" or "final_answer"` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `type: optional "message"` The type of the message input. Always `message`. - `"message"` - `Message object { content, role, status, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. - `content: ResponseInputMessageContentList` A list of one or many input items to the model, containing different content types. - `role: "user" or "system" or "developer"` The role of the message input. One of `user`, `system`, or `developer`. - `"user"` - `"system"` - `"developer"` - `status: optional "in_progress" or "completed" or "incomplete"` The status of item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: optional "message"` The type of the message input. Always set to `message`. - `"message"` - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `id: string` The unique ID of the output message. - `content: array of ResponseOutputText or ResponseOutputRefusal` The content of the output message. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `role: "assistant"` The role of the output message. Always `assistant`. - `"assistant"` - `status: "in_progress" or "completed" or "incomplete"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the output message. Always `message`. - `"message"` - `phase: optional "commentary" or "final_answer"` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more }` The results of the file search tool call. - `attributes: optional map[string or number or boolean]` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string` The type of the pending safety check. - `message: optional string` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `DoubleClick object { keys, type, x, y }` A double click action. - `Drag object { path, type, keys }` A drag action. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `Move object { type, x, y, keys }` A mouse move action. - `Screenshot object { type }` A screenshot action. - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `Type object { text, type }` An action to type in text. - `Wait object { type }` A wait action. - `ComputerCallOutput object { call_id, output, type, 3 more }` The output of a computer tool call. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `id: optional string` The ID of the computer tool call output. - `acknowledged_safety_checks: optional array of object { id, code, message }` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string` The type of the pending safety check. - `message: optional string` Details about the pending safety check. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `FunctionCall object { arguments, call_id, name, 4 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { call_id, output, type, 2 more }` The output of a function tool call. - `call_id: string` The unique ID of the function tool call generated by the model. - `output: string or array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` Text, image, or file output of the function tool call. - `string` A JSON string of the output of the function tool call. - `array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` An array of content outputs (text, image, file) for the function tool call. - `ResponseInputTextContent object { text, type }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `ResponseInputImageContent object { type, detail, file_id, image_url }` An image input to the model. Learn about [image inputs](/docs/guides/vision) - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `detail: optional "low" or "high" or "auto" or "original"` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `file_id: optional string` The ID of the file to be sent to the model. - `image_url: optional string` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `ResponseInputFileContent object { type, detail, file_data, 3 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "low" or "high"` The detail level of the file to be sent to the model. Use `low` for the default rendering behavior, or `high` to render the file at higher quality. Defaults to `low`. - `"low"` - `"high"` - `file_data: optional string` The base64-encoded data of the file to be sent to the model. - `file_id: optional string` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `id: optional string` The unique ID of the function tool call output. Populated when this item is returned via API. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchCall object { arguments, type, id, 3 more }` - `arguments: unknown` The arguments supplied to the tool search call. - `type: "tool_search_call"` The item type. Always `tool_search_call`. - `"tool_search_call"` - `id: optional string` The unique ID of this tool search call. - `call_id: optional string` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete"` The status of the tool search call. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchOutput object { tools, type, id, 3 more }` - `tools: array of object { name, parameters, strict, 3 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 12 more` The loaded tool definitions returned by the tool search output. - `Function object { name, parameters, strict, 3 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown]` A JSON schema object describing the parameters of the function. - `strict: boolean` Whether to enforce strict parameter validation. Default `true`. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string` A description of the function. Used by the model to determine whether or not to call the function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `key: string` The key to compare against the value. - `type: "eq" or "ne" or "gt" or 5 more` Specifies the comparison operator: `eq`, `ne`, `gt`, `gte`, `lt`, `lte`, `in`, `nin`. - `eq`: equals - `ne`: not equal - `gt`: greater than - `gte`: greater than or equal - `lt`: less than - `lte`: less than or equal - `in`: in - `nin`: not in - `"eq"` - `"ne"` - `"gt"` - `"gte"` - `"lt"` - `"lte"` - `"in"` - `"nin"` - `value: string or number or boolean or array of string or number` The value to compare against the attribute key; supports string, number, or boolean types. - `string` - `number` - `boolean` - `array of string or number` - `string` - `number` - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `filters: array of ComparisonFilter or unknown` Array of filters to combine. Items can be `ComparisonFilter` or `CompoundFilter`. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `unknown` - `type: "and" or "or"` Type of operation: `and` or `or`. - `"and"` - `"or"` - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, filters, search_context_size, user_location }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `filters: optional object { allowed_domains }` Filters for the search. - `allowed_domains: optional array of string` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more }` The approximate location of the user. - `city: optional string` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string` Free text input for the region of the user, e.g. `California`. - `timezone: optional string` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_tools, 7 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_tools: optional array of string or object { read_only, tool_names }` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url` or `connector_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string]` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never"` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url` or `connector_id` must be provided. - `CodeInterpreter object { container, type }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g"` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Background type for the generated image. One of `transparent`, `opaque`, or `auto`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low"` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"` The image generation model to use. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"` The image generation model to use. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g"` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` - `Custom object { name, type, defer_loading, 2 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Text object { type }` Unconstrained free-form text. - `type: "text"` Unconstrained text format. Always `text`. - `"text"` - `Grammar object { definition, syntax, type }` A grammar defined by the user. - `definition: string` The grammar definition. - `syntax: "lark" or "regex"` The syntax of the grammar definition. One of `lark` or `regex`. - `"lark"` - `"regex"` - `type: "grammar"` Grammar format. Always `grammar`. - `"grammar"` - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, defer_loading, 3 more } or object { name, type, defer_loading, 2 more }` The function/custom tools available inside this namespace. - `Function object { name, type, defer_loading, 3 more }` - `name: string` - `type: "function"` - `"function"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string` - `parameters: optional unknown` - `strict: optional boolean` - `Custom object { name, type, defer_loading, 2 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more }` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string` Free text input for the region of the user, e.g. `California`. - `timezone: optional string` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `type: "tool_search_output"` The item type. Always `tool_search_output`. - `"tool_search_output"` - `id: optional string` The unique ID of this tool search output. - `call_id: optional string` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete"` The status of the tool search output. - `"in_progress"` - `"completed"` - `"incomplete"` - `AdditionalTools object { role, tools, type, id }` - `role: "developer"` The role that provided the additional tools. Only `developer` is supported. - `"developer"` - `tools: array of object { name, parameters, strict, 3 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 12 more` A list of additional tools made available at this item. - `Function object { name, parameters, strict, 3 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown]` A JSON schema object describing the parameters of the function. - `strict: boolean` Whether to enforce strict parameter validation. Default `true`. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string` A description of the function. Used by the model to determine whether or not to call the function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, filters, search_context_size, user_location }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `filters: optional object { allowed_domains }` Filters for the search. - `allowed_domains: optional array of string` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more }` The approximate location of the user. - `city: optional string` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string` Free text input for the region of the user, e.g. `California`. - `timezone: optional string` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_tools, 7 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_tools: optional array of string or object { read_only, tool_names }` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url` or `connector_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string]` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never"` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url` or `connector_id` must be provided. - `CodeInterpreter object { container, type }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g"` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Background type for the generated image. One of `transparent`, `opaque`, or `auto`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low"` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"` The image generation model to use. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"` The image generation model to use. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, defer_loading, 2 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, defer_loading, 3 more } or object { name, type, defer_loading, 2 more }` The function/custom tools available inside this namespace. - `Function object { name, type, defer_loading, 3 more }` - `name: string` - `type: "function"` - `"function"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string` - `parameters: optional unknown` - `strict: optional boolean` - `Custom object { name, type, defer_loading, 2 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more }` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string` Free text input for the region of the user, e.g. `California`. - `timezone: optional string` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `type: "additional_tools"` The item type. Always `additional_tools`. - `"additional_tools"` - `id: optional string` The unique ID of this additional tools item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `"summary_text"` - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string` The encrypted content of the reasoning item - populated when a response is generated with `reasoning.encrypted_content` in the `include` parameter. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Compaction object { encrypted_content, type, id }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `encrypted_content: string` The encrypted content of the compaction summary. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `id: optional string` The ID of the compaction item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url }` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number` Optional timeout in milliseconds for the command. - `user: optional string` Optional user to run the command as. - `working_directory: optional string` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { action, call_id, type, 3 more }` A tool representing a request to execute one or more shell commands. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` Ordered shell commands for the execution environment to run. - `max_output_length: optional number` Maximum number of UTF-8 characters to capture from combined stdout and stderr output. - `timeout_ms: optional number` Maximum wall-clock time in milliseconds to allow the shell commands to run. - `call_id: string` The unique ID of the shell tool call generated by the model. - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `id: optional string` The unique ID of the shell tool call. Populated when this item is returned via API. - `environment: optional LocalEnvironment or ContainerReference` The environment to execute the shell commands in. - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `status: optional "in_progress" or "completed" or "incomplete"` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCallOutput object { call_id, output, type, 3 more }` The streamed output items emitted by a shell tool call. - `call_id: string` The unique ID of the shell tool call generated by the model. - `output: array of ResponseFunctionShellCallOutputContent` Captured chunks of stdout and stderr output, along with their associated outcomes. - `outcome: object { type } or object { exit_code, type }` The exit or timeout outcome associated with this shell call. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` The exit code returned by the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` Captured stderr output for the shell call. - `stdout: string` Captured stdout output for the shell call. - `type: "shell_call_output"` The type of the item. Always `shell_call_output`. - `"shell_call_output"` - `id: optional string` The unique ID of the shell tool call output. Populated when this item is returned via API. - `max_output_length: optional number` The maximum number of UTF-8 characters captured for this shell call's combined output. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the shell call output. - `"in_progress"` - `"completed"` - `"incomplete"` - `ApplyPatchCall object { call_id, operation, status, 2 more }` A tool call representing a request to create, delete, or update files using diff patches. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` The specific create, delete, or update instruction for the apply_patch tool call. - `CreateFile object { diff, path, type }` Instruction for creating a new file via the apply_patch tool. - `diff: string` Unified diff content to apply when creating the file. - `path: string` Path of the file to create relative to the workspace root. - `type: "create_file"` The operation type. Always `create_file`. - `"create_file"` - `DeleteFile object { path, type }` Instruction for deleting an existing file via the apply_patch tool. - `path: string` Path of the file to delete relative to the workspace root. - `type: "delete_file"` The operation type. Always `delete_file`. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction for updating an existing file via the apply_patch tool. - `diff: string` Unified diff content to apply to the existing file. - `path: string` Path of the file to update relative to the workspace root. - `type: "update_file"` The operation type. Always `update_file`. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `id: optional string` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `ApplyPatchCallOutput object { call_id, status, type, 2 more }` The streamed output emitted by an apply patch tool call. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `id: optional string` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `output: optional string` Optional human-readable log text from the apply patch tool (e.g., patch results or errors). - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown` Additional annotations about the tool. - `description: optional string` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { approval_request_id, approve, type, 2 more }` A response to an MCP approval request. - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `id: optional string` The unique ID of the approval response - `reason: optional string` Optional reason for the decision. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional string` The error from the tool call, if any. - `output: optional string` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `CustomToolCallOutput object { call_id, output, type, id }` The output of a custom tool call from your code, being sent back to the model. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, image_url }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 3 more }` A file input to the model. - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `id: optional string` The unique ID of the custom tool call output in the OpenAI platform. - `CustomToolCall object { call_id, input, name, 3 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `namespace: optional string` The namespace of the custom tool being called. - `CompactionTrigger object { type }` Compacts the current context. Must be the final input item. - `type: "compaction_trigger"` The type of the item. Always `compaction_trigger`. - `"compaction_trigger"` - `ItemReference object { id, type }` An internal identifier for an item to reference. - `id: string` The ID of the item to reference. - `type: optional "item_reference"` The type of item to reference. Always `item_reference`. - `"item_reference"` - `instructions: optional string` A system (or developer) message inserted into the model's context. When used along with `previous_response_id`, the instructions from a previous response will not be carried over to the next response. This makes it simple to swap out system (or developer) messages in new responses. - `previous_response_id: optional string` The unique ID of the previous response to the model. Use this to create multi-turn conversations. Learn more about [conversation state](/docs/guides/conversation-state). Cannot be used in conjunction with `conversation`. - `prompt_cache_key: optional string` A key to use when reading from or writing to the prompt cache. - `prompt_cache_retention: optional "in_memory" or "24h"` How long to retain a prompt cache entry created by this request. - `"in_memory"` - `"24h"` - `service_tier: optional "auto" or "default" or "flex" or "priority"` The service tier to use for this request. - `"auto"` - `"default"` - `"flex"` - `"priority"` ### Returns - `CompactedResponse object { id, created_at, object, 2 more }` - `id: string` The unique identifier for the compacted response. - `created_at: number` Unix timestamp (in seconds) when the compacted conversation was created. - `object: "response.compaction"` The object type. Always `response.compaction`. - `"response.compaction"` - `output: array of Message or object { arguments, call_id, name, 4 more } or object { id, arguments, call_id, 4 more } or 23 more` The compacted list of output items. - `Message object { id, content, role, 3 more }` A message to or from the model. - `id: string` The unique ID of the message. - `content: array of ResponseInputText or ResponseOutputText or TextContent or 6 more` The content of the message - `ResponseInputText object { text, type }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `TextContent object { text, type }` A text content. - `text: string` - `type: "text"` - `"text"` - `SummaryTextContent object { text, type }` A summary text from the model. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `"summary_text"` - `ReasoningText object { text, type }` Reasoning text from the model. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `ResponseInputImage object { detail, type, file_id, image_url }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: "low" or "high" or "auto" or "original"` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string` The ID of the file to be sent to the model. - `image_url: optional string` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `ComputerScreenshotContent object { detail, file_id, image_url, type }` A screenshot of a computer. - `detail: "low" or "high" or "auto" or "original"` The detail level of the screenshot image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `file_id: string` The identifier of an uploaded file that contains the screenshot. - `image_url: string` The URL of the screenshot image. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `ResponseInputFile object { type, detail, file_data, 3 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "low" or "high"` The detail level of the file to be sent to the model. Use `low` for the default rendering behavior, or `high` to render the file at higher quality. Defaults to `low`. - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `role: "unknown" or "user" or "assistant" or 5 more` The role of the message. One of `unknown`, `user`, `assistant`, `system`, `critic`, `discriminator`, `developer`, or `tool`. - `"unknown"` - `"user"` - `"assistant"` - `"system"` - `"critic"` - `"discriminator"` - `"developer"` - `"tool"` - `status: "in_progress" or "completed" or "incomplete"` The status of item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the message. Always set to `message`. - `"message"` - `phase: optional "commentary" or "final_answer"` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `FunctionCall object { arguments, call_id, name, 4 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchCall object { id, arguments, call_id, 4 more }` - `id: string` The unique ID of the tool search call item. - `arguments: unknown` Arguments used for the tool search call. - `call_id: string` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search call item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "tool_search_call"` The type of the item. Always `tool_search_call`. - `"tool_search_call"` - `created_by: optional string` The identifier of the actor that created the item. - `ToolSearchOutput object { id, call_id, execution, 4 more }` - `id: string` The unique ID of the tool search output item. - `call_id: string` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search output item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `tools: array of object { name, parameters, strict, 3 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 12 more` The loaded tool definitions returned by tool search. - `Function object { name, parameters, strict, 3 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown]` A JSON schema object describing the parameters of the function. - `strict: boolean` Whether to enforce strict parameter validation. Default `true`. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string` A description of the function. Used by the model to determine whether or not to call the function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `key: string` The key to compare against the value. - `type: "eq" or "ne" or "gt" or 5 more` Specifies the comparison operator: `eq`, `ne`, `gt`, `gte`, `lt`, `lte`, `in`, `nin`. - `eq`: equals - `ne`: not equal - `gt`: greater than - `gte`: greater than or equal - `lt`: less than - `lte`: less than or equal - `in`: in - `nin`: not in - `"eq"` - `"ne"` - `"gt"` - `"gte"` - `"lt"` - `"lte"` - `"in"` - `"nin"` - `value: string or number or boolean or array of string or number` The value to compare against the attribute key; supports string, number, or boolean types. - `string` - `number` - `boolean` - `array of string or number` - `string` - `number` - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `filters: array of ComparisonFilter or unknown` Array of filters to combine. Items can be `ComparisonFilter` or `CompoundFilter`. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `unknown` - `type: "and" or "or"` Type of operation: `and` or `or`. - `"and"` - `"or"` - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, filters, search_context_size, user_location }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `filters: optional object { allowed_domains }` Filters for the search. - `allowed_domains: optional array of string` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more }` The approximate location of the user. - `city: optional string` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string` Free text input for the region of the user, e.g. `California`. - `timezone: optional string` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_tools, 7 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_tools: optional array of string or object { read_only, tool_names }` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url` or `connector_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string]` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never"` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url` or `connector_id` must be provided. - `CodeInterpreter object { container, type }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g"` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Background type for the generated image. One of `transparent`, `opaque`, or `auto`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low"` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"` The image generation model to use. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"` The image generation model to use. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g"` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` - `Custom object { name, type, defer_loading, 2 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Text object { type }` Unconstrained free-form text. - `type: "text"` Unconstrained text format. Always `text`. - `"text"` - `Grammar object { definition, syntax, type }` A grammar defined by the user. - `definition: string` The grammar definition. - `syntax: "lark" or "regex"` The syntax of the grammar definition. One of `lark` or `regex`. - `"lark"` - `"regex"` - `type: "grammar"` Grammar format. Always `grammar`. - `"grammar"` - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, defer_loading, 3 more } or object { name, type, defer_loading, 2 more }` The function/custom tools available inside this namespace. - `Function object { name, type, defer_loading, 3 more }` - `name: string` - `type: "function"` - `"function"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string` - `parameters: optional unknown` - `strict: optional boolean` - `Custom object { name, type, defer_loading, 2 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more }` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string` Free text input for the region of the user, e.g. `California`. - `timezone: optional string` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `type: "tool_search_output"` The type of the item. Always `tool_search_output`. - `"tool_search_output"` - `created_by: optional string` The identifier of the actor that created the item. - `AdditionalTools object { id, role, tools, type }` - `id: string` The unique ID of the additional tools item. - `role: "unknown" or "user" or "assistant" or 5 more` The role that provided the additional tools. - `"unknown"` - `"user"` - `"assistant"` - `"system"` - `"critic"` - `"discriminator"` - `"developer"` - `"tool"` - `tools: array of object { name, parameters, strict, 3 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 12 more` The additional tool definitions made available at this item. - `Function object { name, parameters, strict, 3 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown]` A JSON schema object describing the parameters of the function. - `strict: boolean` Whether to enforce strict parameter validation. Default `true`. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string` A description of the function. Used by the model to determine whether or not to call the function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, filters, search_context_size, user_location }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `filters: optional object { allowed_domains }` Filters for the search. - `allowed_domains: optional array of string` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more }` The approximate location of the user. - `city: optional string` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string` Free text input for the region of the user, e.g. `California`. - `timezone: optional string` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_tools, 7 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_tools: optional array of string or object { read_only, tool_names }` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url` or `connector_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string]` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never"` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url` or `connector_id` must be provided. - `CodeInterpreter object { container, type }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g"` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Background type for the generated image. One of `transparent`, `opaque`, or `auto`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low"` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"` The image generation model to use. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"` The image generation model to use. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, defer_loading, 2 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, defer_loading, 3 more } or object { name, type, defer_loading, 2 more }` The function/custom tools available inside this namespace. - `Function object { name, type, defer_loading, 3 more }` - `name: string` - `type: "function"` - `"function"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string` - `parameters: optional unknown` - `strict: optional boolean` - `Custom object { name, type, defer_loading, 2 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more }` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string` Free text input for the region of the user, e.g. `California`. - `timezone: optional string` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `type: "additional_tools"` The type of the item. Always `additional_tools`. - `"additional_tools"` - `FunctionCallOutput object { call_id, output, type, 2 more }` The output of a function tool call. - `call_id: string` The unique ID of the function tool call generated by the model. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the function call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the function call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the function call. - `ResponseInputText object { text, type }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, image_url }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 3 more }` A file input to the model. - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `id: optional string` The unique ID of the function tool call output. Populated when this item is returned via API. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more }` The results of the file search tool call. - `attributes: optional map[string or number or boolean]` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string` The type of the pending safety check. - `message: optional string` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `DoubleClick object { keys, type, x, y }` A double click action. - `Drag object { path, type, keys }` A drag action. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `Move object { type, x, y, keys }` A mouse move action. - `Screenshot object { type }` A screenshot action. - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `Type object { text, type }` An action to type in text. - `Wait object { type }` A wait action. - `ComputerCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the computer call tool output. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. - `status: "completed" or "incomplete" or "failed" or "in_progress"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"completed"` - `"incomplete"` - `"failed"` - `"in_progress"` - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `acknowledged_safety_checks: optional array of object { id, code, message }` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string` The type of the pending safety check. - `message: optional string` Details about the pending safety check. - `created_by: optional string` The identifier of the actor that created the item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string` The encrypted content of the reasoning item - populated when a response is generated with `reasoning.encrypted_content` in the `include` parameter. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Compaction object { id, encrypted_content, type, created_by }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `id: string` The unique ID of the compaction item. - `encrypted_content: string` The encrypted content that was produced by compaction. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `created_by: optional string` The identifier of the actor that created the item. - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url }` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number` Optional timeout in milliseconds for the command. - `user: optional string` Optional user to run the command as. - `working_directory: optional string` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { id, action, call_id, 4 more }` A tool call that executes one or more shell commands in a managed environment. - `id: string` The unique ID of the shell tool call. Populated when this item is returned via API. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` - `max_output_length: number` Optional maximum number of characters to return from each command. - `timeout_ms: number` Optional timeout in milliseconds for the commands. - `call_id: string` The unique ID of the shell tool call generated by the model. - `environment: ResponseLocalEnvironment or ResponseContainerReference` Represents the use of a local environment to perform shell actions. - `ResponseLocalEnvironment object { type }` Represents the use of a local environment to perform shell actions. - `type: "local"` The environment type. Always `local`. - `"local"` - `ResponseContainerReference object { container_id, type }` Represents a container created with /v1/containers. - `container_id: string` - `type: "container_reference"` The environment type. Always `container_reference`. - `"container_reference"` - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `created_by: optional string` The ID of the entity that created this tool call. - `ShellCallOutput object { id, call_id, max_output_length, 4 more }` The output of a shell tool call that was emitted. - `id: string` The unique ID of the shell call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the shell tool call generated by the model. - `max_output_length: number` The maximum length of the shell command output. This is generated by the model and should be passed back with the raw output. - `output: array of object { outcome, stderr, stdout, created_by }` An array of shell call output contents - `outcome: object { type } or object { exit_code, type }` Represents either an exit outcome (with an exit code) or a timeout outcome for a shell call output chunk. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` Exit code from the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` The standard error output that was captured. - `stdout: string` The standard output that was captured. - `created_by: optional string` The identifier of the actor that created the item. - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call output. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call_output"` The type of the shell call output. Always `shell_call_output`. - `"shell_call_output"` - `created_by: optional string` The identifier of the actor that created the item. - `ApplyPatchCall object { id, call_id, operation, 3 more }` A tool call that applies file diffs by creating, deleting, or updating files. - `id: string` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` One of the create_file, delete_file, or update_file operations applied via apply_patch. - `CreateFile object { diff, path, type }` Instruction describing how to create a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to create. - `type: "create_file"` Create a new file with the provided diff. - `"create_file"` - `DeleteFile object { path, type }` Instruction describing how to delete a file via the apply_patch tool. - `path: string` Path of the file to delete. - `type: "delete_file"` Delete the specified file. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction describing how to update a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to update. - `type: "update_file"` Update an existing file with the provided diff. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `created_by: optional string` The ID of the entity that created this tool call. - `ApplyPatchCallOutput object { id, call_id, status, 3 more }` The output emitted by an apply patch tool call. - `id: string` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `created_by: optional string` The ID of the entity that created this tool call output. - `output: optional string` Optional textual output returned by the apply patch tool. - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown` Additional annotations about the tool. - `description: optional string` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { id, approval_request_id, approve, 2 more }` A response to an MCP approval request. - `id: string` The unique ID of the approval response - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `reason: optional string` Optional reason for the decision. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional string` The error from the tool call, if any. - `output: optional string` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `CustomToolCall object { call_id, input, name, 3 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `namespace: optional string` The namespace of the custom tool being called. - `CustomToolCallOutput object { call_id, output, type, id }` The output of a custom tool call from your code, being sent back to the model. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, image_url }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 3 more }` A file input to the model. - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `id: optional string` The unique ID of the custom tool call output in the OpenAI platform. - `usage: ResponseUsage` Token accounting for the compaction pass, including cached, reasoning, and total tokens. - `input_tokens: number` The number of input tokens. - `input_tokens_details: object { cached_tokens }` A detailed breakdown of the input tokens. - `cached_tokens: number` The number of tokens that were retrieved from the cache. [More on prompt caching](/docs/guides/prompt-caching). - `output_tokens: number` The number of output tokens. - `output_tokens_details: object { reasoning_tokens }` A detailed breakdown of the output tokens. - `reasoning_tokens: number` The number of reasoning tokens. - `total_tokens: number` The total number of tokens used. ### Example ```http curl https://api.openai.com/v1/responses/compact \ -H 'Content-Type: application/json' \ -H "Authorization: Bearer $OPENAI_API_KEY" \ -d '{ "model": "gpt-5.4", "previous_response_id": "resp_123" }' ``` #### Response ```json { "id": "id", "created_at": 0, "object": "response.compaction", "output": [ { "id": "id", "content": [ { "text": "text", "type": "input_text" } ], "role": "unknown", "status": "in_progress", "type": "message", "phase": "commentary" } ], "usage": { "input_tokens": 0, "input_tokens_details": { "cached_tokens": 0 }, "output_tokens": 0, "output_tokens_details": { "reasoning_tokens": 0 }, "total_tokens": 0 } } ``` ### Example ```http curl -X POST https://api.openai.com/v1/responses/compact \ -H "Content-Type: application/json" \ -H "Authorization: Bearer $OPENAI_API_KEY" \ -d '{ "model": "gpt-5.1-codex-max", "input": [ { "role": "user", "content": "Create a simple landing page for a dog petting café." }, { "id": "msg_001", "type": "message", "status": "completed", "content": [ { "type": "output_text", "annotations": [], "logprobs": [], "text": "Below is a single file, ready-to-use landing page for a dog petting café:..." } ], "role": "assistant" } ] }' ``` #### Response ```json { "id": "resp_001", "object": "response.compaction", "created_at": 1764967971, "output": [ { "id": "msg_000", "type": "message", "status": "completed", "content": [ { "type": "input_text", "text": "Create a simple landing page for a dog petting cafe." } ], "role": "user" }, { "id": "cmp_001", "type": "compaction", "encrypted_content": "gAAAAABpM0Yj-...=" } ], "usage": { "input_tokens": 139, "input_tokens_details": { "cached_tokens": 0 }, "output_tokens": 438, "output_tokens_details": { "reasoning_tokens": 64 }, "total_tokens": 577 } } ```