curl "https://api.fastaf.co/v1/amazon?query=standing+desk" \
  -H "Authorization: Bearer $FASTAF_API_KEY"

fetch("https://api.fastaf.co/v1/amazon?query=standing+desk", {
  headers: { Authorization: `Bearer ${process.env.FASTAF_API_KEY}` },
})
  .then((res) => res.json())
  .then((data) => console.log(JSON.stringify(data, null, 2)));

import os
import requests

res = requests.get(
    "https://api.fastaf.co/v1/amazon",
    params={"query": "standing desk"},
    headers={"Authorization": "Bearer " + os.environ["FASTAF_API_KEY"]},
)
print(res.status_code, res.json())

claude mcp add --transport http fastaf https://api.fastaf.co/mcp \
  --header "Authorization: Bearer $FASTAF_API_KEY"

Then ask your agent: “Find standing desks on Amazon”. The amazon_product tool runs the same request.

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

const account = privateKeyToAccount(process.env.EVM_PRIVATE_KEY);
const fetchWithPayment = wrapFetchWithPaymentFromConfig(fetch, {
  schemes: [{ network: "eip155:8453", client: new ExactEvmScheme(account) }],
});

fetchWithPayment("https://api.fastaf.co/x402/v1/amazon?query=standing+desk")
  .then((res) => res.json())
  .then((data) => console.log(JSON.stringify(data, null, 2)));

No sign-up and no API key: a Base wallet with USDC, its private key in EVM_PRIVATE_KEY. The 402 states the price, 0.003 USDC for this search, and the payment settles only if the request succeeds.

Save it as a .mjs file (or set "type": "module" in package.json) and run it with Node 18 or later.