Read Uniswap V3 pool state

Read on-chain state of a Uniswap V3 pool: token0/token1 addresses + decimals, fee tier, current sqrtPriceX96, tick, in-range liquidity, and the decoded human-readable spot price (token1 per token0). One $0.002 call replaces ~6 RPC roundtrips on the caller's side.

Input

Field	Type	Description
poolAddress *	string	0x-prefixed Uniswap V3 pool contract address.
network	string	ethereum / base / polygon / arbitrum / optimism (default base).

Example output

{
  "network": "base",
  "poolAddress": "0xd0b53d9277642d899df5c87a3966a349a798f224",
  "token0": {
    "address": "0x4200000000000000000000000000000000000006",
    "decimals": 18
  },
  "token1": {
    "address": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
    "decimals": 6
  },
  "fee": 500,
  "sqrtPriceX96": "1456834567890123456789012345",
  "tick": 196543,
  "liquidity": "1234567890123456789",
  "spotPrice_1per0": 3500.05
}

Try it — see the 402 challenge (free)

curl -i -X POST https://agent402.tools/api/dex-pool \
  -H "Content-Type: application/json" \
  -d '{"poolAddress":"0xd0b53d9277642d899df5c87a3966a349a798f224","network":"base"}'

The response is HTTP 402 Payment Required with exact payment requirements. Any x402 v2 client pays automatically and retries:

Paid call (JavaScript agent)

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client();
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/dex-pool", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "poolAddress": "0xd0b53d9277642d899df5c87a3966a349a798f224",
    "network": "base"
  }),
});

Wallet-only. This tool reaches the network/browser/storage, so it is paid in USDC via x402 (no proof-of-work tier).

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