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Uniswap v3 On-Chain Price
x402
Uniswap v3 On-Chain Price is a paid API for AI agents from bess-x402.onrender.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-30).
Returns the spot price of a token pair read directly from the deepest Uniswap v3 pool on Ethereum, Base, Arbitrum, Optimism, or Polygon, including price, inverse, fee tier, tick, and liquidity.
Price / call$0.002
Success—
StatusUnknown
How this service works
Spot price of a token pair read directly from the deepest Uniswap v3 pool on Ethereum, Base, Arbitrum, Optimism or Polygon: price, inverse, fee tier, tick and liquidity. Tokens by symbol or address.
Output
Returns the spot price of the token pair (price and its inverse), the fee tier of the selected pool, the current tick, and the pool's liquidity — all sourced directly from the deepest Uniswap v3 pool on the requested EVM chain.
Example use cases
Real-time DeFi arbitrage price check
“What's the live Uniswap v3 price of WBTC in USDC on Arbitrum right now, and what's the liquidity in the deepest pool?”
Portfolio valuation on Base
“I hold some cbETH on Base — can you look up its current Uniswap v3 price in USDC on Base so I can value my position?”
Cross-chain price comparison
“Get me the Uniswap v3 spot price of MATIC quoted in USDC on Polygon and also on Ethereum so I can compare across chains.”
Technical details
Endpoint
GEThttps://bess-x402.onrender.com/v1/evm/uniswap-price?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a trustless, on-chain spot price directly from Uniswap v3 pool state — ideal when you require the fee tier, tick, and liquidity alongside the price, or when you want to avoid relying on a centralized price oracle or exchange API. Prefer this over CEX price feeds when verifying DEX pricing, computing slippage estimates, or auditing arbitrage opportunities on Ethereum, Base, Arbitrum, Optimism, or Polygon.
Side effects
- Token symbol not recognized — use a contract address instead
- No Uniswap v3 pool found for the requested pair on the specified chain
- Unsupported chain name provided — must be ethereum, base, arbitrum, optimism, or polygon
- Invalid fee tier specified — must be 100, 500, 3000, or 10000
- RPC or network timeout causing stale or missing data
- Contract address malformed or not a valid ERC-20 token
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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