Pyth Morpho Wrapper is a wrapper around the Pyth oracle that can be used as an oracle for markets on Morpho Blue.

The MorphoPythOracle is an oracle that uses Pyth to provide price data.

This oracle handles the following cases among others (let's say that our pair is A/B):

• A/B is a feed (typically, WBTC/BTC).
• B/A is a feed (typically, BTC/USD).
• A/C and B/C are feeds (typically, WBTC/BTC and BTC/USD).
• A/C, C/D and B/D are feeds (typically, WBTC/BTC, BTC/USD, USDC/USD).
• A/D, and B/C, C/D are feeds (typically, USDC/USD, WBTC/BTC, BTC/USD).
• A/C, C/D and B/E, E/D are feeds.
• A/C and C/B are feeds (typically, WBTC/BTC and BTC/ETH).

To deploy a MorphoPythOracle on Ethereum, it is highly recommended to use the factory MorphoPythOracleFactory. To do so, call the createMorphoPythOracle function with the following parameters:

• pyth: The Pyth contract address. This is the address of the Pyth contract deployed on the chain. You can find the address of the Pyth contract for each chain here.
• baseVault: The ERC4626 token vault for the base asset.
• baseVaultConversionSample: A sample amount for converting base vault units.
• baseFeed1, baseFeed2: Pyth price feed ids for the base asset. You can find the price feed ids for each asset here.
• baseTokenDecimals: Decimal precision of the base asset.
• quoteVault: The ERC4626 token vault for the quote asset.
• quoteVaultConversionSample: A sample amount for converting quote vault units.
• quoteFeed1, quoteFeed2: Pyth price feed ids for the quote asset. You can find the price feed ids for each asset here.
• quoteTokenDecimals: Decimal precision of the quote asset.
• priceFeedMaxAge: The maximum age of the price feed in seconds. Note: This adds a extra safety net to avoid using stale prices.
• salt: A unique identifier to create deterministic addresses for deployed oracles.

Warning: If there is an ERC4626-compliant vault for baseVault or quoteVault, the baseTokenDecimals or quoteTokenDecimals are still the decimals of the underlying asset of the vault, and not the decimals of the Vault itself. E.g: for a MetaMorpho WETH vault, as baseVault, the baseTokenDecimals is 18 as WETH has 18 decimals.

TODO: The address on Ethereum of this factory is .

Below are the arguments to fill for the creation of the WBTC/USDT oracle on Base Mainnet:

"pyth": "0x8250f4aF4B972684F7b336503E2D6dFeDeB1487a",
"baseVault": "0x0000000000000000000000000000000000000000",
"baseVaultConversionSample": 1,
"baseFeed1": "0xc9d8b075a5c69303365ae23633d4e085199bf5c520a3b90fed1322a0342ffc33",
"baseFeed2": "0x0000000000000000000000000000000000000000000000000000000000000000",
"baseTokenDecimals": 8,
"quoteVault":"0x0000000000000000000000000000000000000000",
"quoteVaultConversionSample": 1,
"quoteFeed1": "0x2b89b9dc8fdf9f34709a5b106b472f0f39bb6ca9ce04b0fd7f2e971688e2e53b",
"quoteFeed2": "0x0000000000000000000000000000000000000000000000000000000000000000",
"quoteTokenDecimals": 6,
"priceFeedMaxAge": 3600,
"salt": "<user-defined value used to make the address unique>",

Install dependencies: forge install

Install Pyth SDK:

npm init -y
npm install @pythnetwork/pyth-sdk-solidity

Run test: forge test