Audience
Software developers and engineering teams building custom AI-agent applications, including coding agents, CLI tools, and web assistants.
About OpenHarness
OpenHarness is an open-source TypeScript SDK for developers building custom AI-agent applications, including coding agents, CLI tools, and web-based assistants. It provides stateless agent execution, explicit conversation-state handling, streaming events, composable middleware for retries, persistence and context compaction, hierarchical subagents, and permission-controlled tools. Developers can connect model providers through the Vercel AI SDK, add external capabilities through Model Context Protocol (MCP), and use filesystem or shell tools through configurable providers. The SDK also offers React hooks and Vue composables for streaming agent output into application interfaces. OpenHarness is installed as an npm package and is intended to be embedded in projects running on Node.js or edge runtimes; it is a developer library rather than a hosted end-user agent service.
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OpenHarness
open-harness.dev/
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OpenHarness Frequently Asked Questions
Q: What kinds of users and organization types does OpenHarness work with?
OpenHarness works with these users and organization types: Mid Size Business, Small Business, Enterprise, Freelance, Nonprofit, Government, and Startup.
Q: What languages does OpenHarness support in their product?
OpenHarness supports these languages: English.
Q: What other applications or services does OpenHarness integrate with?
OpenHarness integrates with: Vercel AI SDK, Anthropic, Model Context Protocol (MCP), and OpenAI.
Q: Does OpenHarness have an API?
Yes, OpenHarness has an API.
Q: What type of training does OpenHarness provide?
OpenHarness provides training in the form of documentation.
