$0.01
per call · USD Coin on Base
Spot token price in USD on Polygon PoS, read from QuickSwap, SushiSwap and Uniswap v3 pools at call time. Returns priceUsd, the routed pair, backing liquidityUsd, confidence and blockNumber. Requires ?symbol=TICKER (e.g. WMATIC) or ?token=0xADDRESS. Errors: 400 missing_symbol|unknown_token, 404 no_reliable_price when pools are too thin, 502 upstream_read_failed. Depth is /liquidity; a size-aware quote is /slippage. Chain-pinned; bare /price = BSC.
Endpoint
GET https://x402.donnyautomation.com/polygon/price2
Calls / 30d
1
Unique payers / 30d
Aug 30
Last called
exact
Payment scheme
Call this service
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";
const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);
const res = await fetchWithPay("https://x402.donnyautomation.com/polygon/price", {
method: "GET",
});
const data = await res.json();curl -X GET \
"https://x402.donnyautomation.com/polygon/price?symbol=WMATIC" \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"chainId": 137,
"network": "polygon",
"ts": "2026-07-31T00:00:00.000Z"
}Payment details
0x2740651e046c59ab2a6510401140643292d3a96fUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
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