Site map (URL discovery)

Discover a website's URLs in one call: reads robots.txt, its declared sitemap(s) (sitemap indexes and gzipped sitemaps included, /sitemap.xml as the fallback) and the start page's internal links, then returns a same-host, normalized, deduplicated list (up to 500) with an optional substring filter. Send POST /api/site-map with the required field url and pay $0.005 per call over x402 or MPP (there is no free tier). It returns a JSON object with url, host, total, urls, sources and 7 more.

Hard budgets: at most 6 fetches, 15 seconds, 5 MB. Use it to pick which pages to crawl or extract next.

Category: Web & documents · Tags: web sitemap crawl urls discovery seo robots site

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Parameters

Example request

curl -i -X POST https://agent402.tools/api/site-map \
  -H "Content-Type: application/json" \
  -d '{"url":"https://www.iana.org","limit":50}'

Without payment this returns HTTP 402 Payment Required with the exact price for site-map; any x402 v2 or MPP client pays it and retries.

Example response

{
  "url": "https://www.iana.org/",
  "host": "www.iana.org",
  "total": 120,
  "urls": [
    "https://www.iana.org/",
    "https://www.iana.org/domains",
    "https://www.iana.org/numbers",
    "https://www.iana.org/protocols"
  ],
  "sources": {
    "sitemap": 96,
    "links": 24
  },
  "sitemapsRead": 1,
  "truncated": true,
  "search": null,
  "fetches": 3,
  "warnings": [],
  "source": "robots.txt, sitemap(s) and start-page links, fetched live",
  "fetchedAt": "2026-08-22T00:00:00.000Z"
}

From an MCP client

catalog.call {
  "slug": "site-map",
  "params": {
    "url": "https://www.iana.org",
    "limit": 50
  }
}

The hosted connector at https://agent402.tools/mcp needs a payment for site-map; the stdio package pays it from a wallet or from AGENT402_CREDITS_KEY. Local install: npx -y agent402-mcp.

Errors and behavior

• url is required. An input the tool rejects returns an HTTP 4xx whose body carries error, tool, expected, required and example, so the caller can correct it.
• A paid call that ends in any status of 400 or above is not charged over x402, MPP or a prepaid credits key: settlement is cancelled when the tool fails. The exception is a Tempo push credential, a transfer the buyer sent before the call: it settles before the tool runs, so if the tool then fails the payment is recorded as a refund owed to the paying wallet.
• Wallet-only: this tool reaches the network or stored state, so it has no proof-of-work tier. A prepaid card-credits key issued earlier (Authorization: Bearer a402_...) also pays it.
• A GET or HEAD to /api/site-map returns the same 402 quote, so the price can be read without a body.
• An Idempotency-Key header makes a retried paid call replay the first 200 instead of charging again (an answer larger than 1 MB is not replayed).

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();
client.setSpendControls?.(false); // keep your own spending ceiling in code
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/site-map", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "url": "https://www.iana.org",
    "limit": 50
  }),
});

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