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Sitemap URL Extractor
x402
Sitemap URL Extractor is a paid API for AI agents from sitemap-url-extractor.underscoredone.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Fetches and parses a sitemap.xml URL, returning all contained page URLs along with metadata like last-modified dates and change frequency, following sitemap index links recursively.
Price / call$0.01
Success—
StatusUnknown
How this service works
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.
Output
A structured list of all page URLs found in the sitemap, including optional metadata per URL such as last-modified date and change frequency. If the sitemap is an index pointing to child sitemaps, those are followed and their URLs included as well.
Example use cases
Competitive website page discovery
“Pull all the URLs from our competitor's sitemap at https://competitor.com/sitemap.xml so we can see what pages they have and compare their site structure to ours.”
Identify stale or outdated content
“Grab the sitemap from https://oursite.com/sitemap.xml and show me which pages haven't been updated in the last six months—I want to know what content needs refreshing.”
Audit broken links across site
“Can you extract every single URL from https://mysite.com/sitemap.xml including any nested sitemaps, and give me the full list so I can run a broken link checker against the whole site?”
Technical details
Endpoint
POSThttps://sitemap-url-extractor.underscoredone.com/extractWhen to prefer
Use this endpoint when you need to enumerate all URLs from a website's sitemap.xml, especially when the sitemap may be an index pointing to multiple child sitemaps. Ideal for SEO audits, content inventories, broken link detection, and competitive page discovery when a sitemap URL is known. Prefer this over manual web crawling when a sitemap is available, as it is faster and more structured.
Side effects
- Invalid or malformed sitemap URL provided — returns error indicating bad input
- Target sitemap.xml is unreachable or returns non-200 HTTP status — returns fetch error
- Sitemap file is malformed XML — returns parsing error
- Sitemap index chains are too deep or circular — may time out or return partial results
- Rate limiting or blocking by target server — fetch fails with access denied
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| sitemap_url | string | The full web address of the sitemap.xml file you want to read, for example: https://example.com/sitemap.xml |
Output
Schema · Response
{
"type": "json",
"example": {
"urls": [
{
"url": "https://onescales.com/pages/contact",
"lastmod": "2022-12-27T03:01:05-05:00",
"priority": null,
"changefreq": "weekly"
},
{
"url": "https://onescales.com/pages/about",
"lastmod": "2025-09-29T21:38:56-04:00",
"priority": null,
"changefreq": "weekly"
},
{
"url": "https://onescales.com/pages/join-our-community",
"lastmod": "2023-11-29T18:49:48-05:00",
"priority": null,
"changefreq": "weekly"
},
{
"url": "https://onescales.com/pages/podcast",
"lastmod": "2024-01-01T23:12:34-05:00",
"priority": null,
"changefreq": "weekly"
},
{
"url": "https://onescales.com/pages/support-us",
"lastmod": "2024-10-07T21:21:59-04:00",
"priority": null,
"changefreq": "weekly"
},
{
"url": "https://onescales.com/pages/shopify-growth-course",
"lastmod": "2025-05-06T21:28:16-04:00",
"priority": null,
"changefreq": "weekly"
}
],
"total_urls": 6,
"api_version": "1.0.0",
"sitemaps_found": 1
}
}Tags
x402
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