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Uniswap V3 DEX Spot Quote
x402
Uniswap V3 DEX Spot Quote is a paid API for AI agents from agent402.tools, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).
Returns a spot price quote (amountOut net of fees) for a token swap through a specified Uniswap V3 pool at the current tick
Price / call$0.002
Success—
StatusUnknown
How this service works
Spot quote for swapping through a Uniswap V3 pool at the current tick. amountIn is in human units (not wei). zeroForOne=true sends token0 → token1; false sends token1 → token0. Returns amountOut net of the pool's fee tier. NOTE: this is a single-tick spot quote - slippage from depleting concentrated liquidity is NOT modeled. Use for indicative pricing; for production swaps quote against the Uniswap SDK.
Output
The amountOut value in human-readable units representing how many of the destination token you receive after deducting the Uniswap V3 pool's fee tier, calculated at the current tick price.
Example use cases
Example prompt
“Give me a spot quote for swapping 1 WETH for USDC through this Uniswap V3 pool on Base — pool address 0x4C36388bE6F416A29C8d8Eee81C771cE6bE14B5, sending token0 to token1.”
Technical details
Endpoint
POSThttps://agent402.tools/api/dex-quoteWhen to prefer
Use this endpoint when you need a fast, on-chain spot price estimate for a specific Uniswap V3 pool without executing an actual swap. Ideal for agents building DeFi workflows, price monitoring bots, or pre-trade checks that need fee-adjusted output amounts in human-readable units across Ethereum, Base, Polygon, Arbitrum, or Optimism.
Side effects
- Invalid or non-existent pool address returns an error
- Unsupported network string returns a validation error
- amountIn of zero or negative causes a computation error
- Pool has no liquidity at the current tick — quote may fail or return zero
- Network RPC unavailability causes a timeout or internal server error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| network | string | ethereum / base / polygon / arbitrum / optimism (default base). |
| amountIn | number | Input amount in human units (e.g. 1 WETH, not 1e18 wei). |
| zeroForOne | boolean | true: send token0 → receive token1. false: send token1 → receive token0. |
| poolAddress | string | 0x-prefixed Uniswap V3 pool address. |
Output
Schema · Response
{
"type": "json",
"example": {
"fee": 500,
"note": "spot quote at current tick - no multi-tick swap simulation",
"network": "base",
"amountIn": 1,
"amountOut": 3498.3,
"zeroForOne": true,
"poolAddress": "0xd0b53d9277642d899df5c87a3966a349a798f224",
"spotPrice_1per0": 3500.05
}
}Tags
x402
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