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Saylor Innovations Data Desk – Uniswap V3 Swap Quote
x402
Saylor Innovations Data Desk – Uniswap V3 Swap Quote is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).
Returns a Uniswap V3 swap quote for any token pair on Ethereum, Base, Arbitrum, Optimism, or Polygon, including best fee tier, optional WETH hop routing, output amount, price impact, and gas estimate.
Price / call$0.01
Success—
StatusUnknown
How this service works
Uniswap V3 swap quote for any token pair on Ethereum, Base, Arbitrum, Optimism or Polygon: best fee tier or WETH hop, output amount, price impact and gas.
Output
A JSON object containing the best swap route on Uniswap V3 (output token amount, optimal fee tier, whether a WETH hop is used, price impact, and gas estimate), plus an array of alternative routes, the block at which the quote was taken, the data source, and a note with caveats for interpreting the result.
Example use cases
Pre-trade price check for DeFi bot
“Before I execute a swap, tell me how much WETH I'll get for 5000 USDC on Base — use token addresses 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 for USDC and 0x4200000000000000000000000000000000000006 for WETH, and show me the best fee tier and price impact.”
Arbitrage opportunity scouting
“Get me a Uniswap V3 quote on Arbitrum for swapping 10 WETH (0x82aF49447D8a07e3bd95BD0d56f35241523fBab1) to USDC (0xFF970A61A04b1cA14834A43f5dE4533eBDDB5CC8) — what's the output amount and price impact so I can compare it against another exchange?”
Gas cost estimation before large swap
“I'm about to swap 100000 DAI for USDC on Polygon — DAI is 0x8f3Cf7ad23Cd3CaDbD9735AFf958023239c6A063 and USDC is 0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174. Can you get me the Uniswap V3 quote with the expected output, best fee tier, and gas estimate?”
Technical details
Endpoint
GEThttps://saylorinnovations.com/api/dex/quote?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, read-only Uniswap V3 swap quote across Ethereum mainnet or major L2s (Base, Arbitrum, Optimism, Polygon) without needing to connect a wallet or execute a transaction. It is ideal for pre-trade price checks, arbitrage scouting, gas estimation, and building DeFi dashboards. Prefer it over on-chain RPC calls when you want automatic best-fee-tier selection and WETH routing handled for you.
Side effects
- Unsupported chain name returns an error or empty result
- Invalid or non-checksummed token address causes a failed lookup
- No liquidity in any fee tier for the pair returns no valid quote
- Extremely large amount_in may produce unreliable price impact figures
- Network congestion or RPC node issues may cause stale or failed quotes
- amount_in formatted incorrectly (e.g. in wei instead of decimal) produces wrong output
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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