{"slug":"api-x402node-dev-defi-swap-quote-199f37","title":"On-chain Uniswap V3 swap quote for any token pair","host":"api.x402node.dev","method":"GET","resource":"https://api.x402node.dev/defi/swap-quote","category":"market","description":"On-chain Uniswap V3 swap quote for any token pair - estimated output amount, effective rate and best fee tier, read directly from pools across Base/Ethereum/Arbitrum/Optimism/Polygon - real-time executable pricing agents need before swapping that LLMs cannot compute. swap quote, swap estimate, unisw","price_listed":0.01,"price_asked":null,"state":"effects","state_label":"Not tested: has real-world effects","checks_7d":0,"answered_7d":0,"latency_ms_median":null,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"amount":"string","chain":"string","from":"string","to":"string","tokenIn":"string","tokenOut":"string"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"amount":{"description":"Input amount (default 1)","type":"string"},"chain":{"description":"base (default), ethereum, arbitrum, optimism, polygon","type":"string"},"from":{"description":"Source format (optional)","type":"string"},"to":{"description":"Target format (optional)","type":"string"},"tokenIn":{"description":"Input token address (required)","type":"string"},"tokenOut":{"description":"Output token address (required)","type":"string"}},"required":["tokenIn","tokenOut"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"}},"required":["input"],"type":"object"},"history":[],"description_full":"On-chain Uniswap V3 swap quote for any token pair - estimated output amount, effective rate and best fee tier, read directly from pools across Base/Ethereum/Arbitrum/Optimism/Polygon - real-time executable pricing agents need before swapping that LLMs cannot compute. swap quote, swap estimate, uniswap quote, token swap rate, dex quote, how much will i get Accepts payment on Base or Solana — either network works.","last_updated":"2026-10-23T14:09:34.494Z","schemes":["exact"]}