Uniswap
Uniswap on Base, read straight from the contracts — live exact-in quotes across every v3 fee tier (QuoterV2, no indexer lag), spot prices, pool state for v3 AND v4 (including v4 native-ETH pools), and deterministic swap-transaction building: fresh quote → min-out with your slippage bound → SwapRouter02 calldata the user signs, approve step included, eth_call dry-run with real revert reasons. Recipient is always the payer; the service never holds keys, never submits. No upstream API key exists at all.
Recent calls
x402 endpoints
1- POST/mcp$0.003via Yeetfuluniswap.yeetful.com
at volume≈ $4.32/day @ 1 call/min·≈ $259/day @ 1 call/sec
MCP Streamable HTTP (JSON-RPC tools/call) — quote (exact-in across all v3 fee tiers), price, pool_info (v3 + v4 via StateView), build_swap (SwapRouter02 calldata to sign, approve step + dry-run included), build_wrap/build_unwrap, convert_amount. First-party (Yeetful/x402-services).