Uniswap MCP

Uniswap on Base, read straight from the contracts — live quotes across every v3 fee tier (QuoterV2), spot prices, v3 + v4 pool state, and deterministic swap-transaction building the user signs with their own wallet. No API key, no indexer. Pay-per-call in USDC on Base. Powered by x402.

Endpoint

POST https://uniswap.yeetful.com/mcp

Tools

• quote — live exact-in quote across every v3 fee tier (best tier + gas)
• price — spot price from the most liquid pool
• pool_info — v3 pools per tier + canonical v4 pools (incl. native-ETH)
• build_swap — swap tx to sign: fresh quote → min-out → SwapRouter02 calldata, approve step included, eth_call dry-run
• build_wrap / build_unwrap — ETH ↔ WETH
• convert_amount — human amount ↔ atoms with real on-chain decimals

Safety

Builds only — never holds keys, never signs, never submits. The swap recipient is always the payer. Designed to flow into Yeetful's guardrail + sign pipeline.

Service metadata: /api/info