Links

{
  "checkedAt": "2026-10-13T09:00:00.000Z",
  "finalUrl": "https://example.com/",
  "links": [
    {
      "checked": true,
      "error": null,
      "finalUrl": "https://www.iana.org/help/example-domains",
      "internal": false,
      "ok": true,
      "redirected": true,
      "status": 200,
      "text": "More information...",
      "url": "https://www.iana.org/domains/example"
    },
    {
      "checked": true,
      "error": null,
      "finalUrl": "https://example.com/old",
      "internal": true,
      "ok": false,
      "redirected": false,
      "status": 404,
      "text": "Old page",
      "url": "https://example.com/old"
    }
  ],
  "note": "Up to 40 links are checked (HEAD, then GET where HEAD is refused). Rows after the first 500 are not listed.",
  "scope": "all",
  "totals": {
    "broken": 1,
    "checked": 2,
    "found": 2,
    "notChecked": 0,
    "redirected": 1,
    "skipped": 0
  },
  "url": "https://example.com/"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.sitecheck-api.workers.dev/api/links?scope=external&url=example.com'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://api.sitecheck-api.workers.dev/api/links?scope=external&url=example.com' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

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

// Pays at most $0.003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.003" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.sitecheck-api.workers.dev%2Fapi%2Flinks
const res = await pay("https://api.sitecheck-api.workers.dev/api/links?scope=external&url=example.com");
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.003"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.sitecheck-api.workers.dev/api/links?scope=external&url=example.com")
    print(res.status_code, res.text)