Web data your agent pays for per call. Only when it works.

# No payment header: the API answers 402 with the price and where to pay
curl -i "https://scrapemole-api-mainnet.scrapemole.workers.dev/v1/youtube/search?q=espresso%20machine%20review&limit=10"

HTTP/2 402
content-type: application/json; charset=utf-8
payment-required: eyJ4NDAyVmVyc2lvbiI6MiwiZXJyb3IiOiJQYXltZW50IHJl…  (base64 of the same JSON, 6944 chars)

{
  "x402Version": 2,
  "error": "Payment required",
  "resource": {
    "url": "https://scrapemole-api-mainnet.scrapemole.workers.dev/v1/youtube/search?q=espresso%20machine%20review&limit=10",
    "mimeType": "application/json"
  },
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "amount": "10000",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "payTo": "0xCb535d13C7fC5Fe6C2B88da3f3601B840CCaf8Bc",
      "maxTimeoutSeconds": 300,
      "extra": {
        "name": "USD Coin",
        "version": "2"
      }
    }
  ]
}
# Body trimmed: the live response also has resource.description and extensions.bazaar
# (input schema and an output example). Captured 11 Oct 2026 18:11 UTC.

// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPaymentFromConfig, decodePaymentResponseHeader } from '@x402/fetch';
import { ExactEvmScheme } from '@x402/evm';
import { privateKeyToAccount } from 'viem/accounts';

// Your agent's own wallet, holding a little USDC on Base. No ScrapeMole account or API key.
const account = privateKeyToAccount(process.env.AGENT_PRIVATE_KEY);
const pay = wrapFetchWithPaymentFromConfig(fetch, {
  schemes: [{ network: 'eip155:8453', client: new ExactEvmScheme(account) }],
});

// On 402 the wrapper signs the USDC authorization and retries once.
const res = await pay('https://scrapemole-api-mainnet.scrapemole.workers.dev/v1/youtube/search?q=espresso%20machine%20review&limit=10');
console.log(res.status, await res.json());
// Settled only on 200; the receipt (tx hash) is in the PAYMENT-RESPONSE header.
if (res.ok) console.log(decodePaymentResponseHeader(res.headers.get('payment-response')));