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YO Protocol is an ERC-4626 yield aggregator with async redemption. The plugin uses only onchain reads through chain_rpc_request and unsigned calldata submitted through Base MCP send_calls; no HTTP API, CLI, or allowlist is required. Chains: Base, Ethereum, and Arbitrum. Operations: vault listing, TVL reads, share-price reads, position checks, pending redeem checks, deposits, and redeems.
YO APY is not available from onchain data. The plugin reports onchain TVL and share price, and points users to the YO dapp when they need offchain yield data.

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Try it

Vaults
Show me the YO vaults
Position
What's my position in yoUSD?
Deposit
Deposit 1 USDC into yoUSD on Base

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Pattern

Reads use chain_rpc_request with eth_call against the vault registry. Deposits batch approve(underlying -> Gateway, amountIn) before Gateway.deposit(...). Redeems batch a share-token approval when needed before Gateway.redeem(...). All calls use chain as base, ethereum, or arbitrum, and value is 0x0. The assistant shows expected shares or assets and slippage-derived minimums before submitting send_calls.

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Reference

Full plugin spec on GitHub

Vault registry, calldata selectors, position aggregation, deposit and redeem mapping, and onchain-read notes.