Verify x402 settlement

Confirm a USDC payment actually settled: given a tx hash (and network), returns whether it succeeded and the USDC transfers it contains (from, to, amount). Optionally check it paid a specific address at least a minimum amount. Read-only proof of payment. ?hash=0x…&network=base&to=0x…&min=0.001

Input

Field	Type	Description
hash *	string	0x transaction hash
network	string	chain: base | polygon | arbitrum | optimism | ethereum (default base)
to	string	optional: expected recipient address to check
min	number	optional: minimum USDC expected to that recipient

Example output

{
  "hash": "0x…",
  "network": "base",
  "settled": true,
  "status": "success",
  "transfers": [
    {
      "from": "0x…",
      "to": "0x…",
      "usdc": "0.001"
    }
  ],
  "matched": true
}

Try it — see the 402 challenge (free)

curl -i "https://agent402.tools/api/x402-verify?hash=0x0000000000000000000000000000000000000000000000000000000000000000&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/x402-verify?hash=0x0000000000000000000000000000000000000000000000000000000000000000&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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