ToolVet
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Extract

by Sitemap URL Extractor in Search & web

x402 APIPassing, checked 3 h ago

Give this API a link to any website's sitemap.xml file and it will fetch and parse it, returning every URL found inside. If the sitemap links to other sitemaps (called sitemap indexes), it will follow and extract those too. Each URL is returned with any extra information available, such as when the page was last updated and how often it changes. Useful for SEO audits, content inventories, broken link checks, and competitive research.

POST
https://sitemap-url-extractor.underscoredone.com/extract
Price
$0.01
per call in USDC
Uptime
100%
last 30 days
Response time
276 ms
1.4 s slowest 5%
Last check
Passed
3 h ago, next any minute now

Run a free test callHow to call it

Reliability

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Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://sitemap-url-extractor.underscoredone.com/extract

Each call costs $0.01 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://sitemap-url-extractor.underscoredone.com/extract
content-type: application/json

{
  "sitemap_url": "https://onescales.com/sitemap.xml"
}

Parameters

ParameterTypeRequiredDescription
sitemap_urlstringYesThe full web address of the sitemap.xml file you want to read, for example: https://example.com/sitemap.xml

Example response

The provider's example. We can't check it without paying.

Example response, 43 lines
{
  "api_version": "1.0.0",
  "sitemaps_found": 1,
  "total_urls": 6,
  "urls": [
    {
      "changefreq": "weekly",
      "lastmod": "2022-12-27T03:01:05-05:00",
      "priority": null,
      "url": "https://onescales.com/pages/contact"
    },
    {
      "changefreq": "weekly",
      "lastmod": "2025-09-29T21:38:56-04:00",
      "priority": null,
      "url": "https://onescales.com/pages/about"
    },
    {
      "changefreq": "weekly",
      "lastmod": "2023-11-29T18:49:48-05:00",
      "priority": null,
      "url": "https://onescales.com/pages/join-our-community"
    },
    {
      "changefreq": "weekly",
      "lastmod": "2024-01-01T23:12:34-05:00",
      "priority": null,
      "url": "https://onescales.com/pages/podcast"
    },
    {
      "changefreq": "weekly",
      "lastmod": "2024-10-07T21:21:59-04:00",
      "priority": null,
      "url": "https://onescales.com/pages/support-us"
    },
    {
      "changefreq": "weekly",
      "lastmod": "2025-05-06T21:28:16-04:00",
      "priority": null,
      "url": "https://onescales.com/pages/shopify-growth-course"
    }
  ]
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.01.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://sitemap-url-extractor.underscoredone.com/extract' \
  -H 'content-type: application/json' \
  --data-raw '{"sitemap_url":"https://onescales.com/sitemap.xml"}'

# 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 - -X POST 'https://sitemap-url-extractor.underscoredone.com/extract' \
  -H 'content-type: application/json' \
  --data-raw '{"sitemap_url":"https://onescales.com/sitemap.xml"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// 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 $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
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 $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fsitemap-url-extractor.underscoredone.com%2Fextract&method=POST
const res = await pay("https://sitemap-url-extractor.underscoredone.com/extract", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "sitemap_url": "https://onescales.com/sitemap.xml"
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# 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 $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://sitemap-url-extractor.underscoredone.com/extract",
        json={
            "sitemap_url": "https://onescales.com/sitemap.xml",
        },
    )
    print(res.status_code, res.text)

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