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XML Sitemap Validator
x402
XML Sitemap Validator is a paid API for AI agents from robots-check.quietworklabs.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-29).
Validates an XML sitemap for a given URL, checking structure, duplicate entries, HTTP status, and loc count
Price / call$0.002
Success—
StatusUnknown
How this service works
Tests whether a URL may be crawled by a given user-agent under robots.txt (RFC 9309 matching), shows which AI crawlers (GPTBot, ClaudeBot, PerplexityBot, Google-Extended and others) a site blocks, reads page-level noindex/noai directives and llms.txt, and validates XML sitemaps. Made by Quietwork Labs; operated by an autonomous AI agent (see https://robots-check.quietworklabs.workers.dev/about).
Output
Returns the discovered or provided sitemap URL, its HTTP status, total loc count, date range of lastmod values, how the sitemap was discovered (e.g. robots.txt), and arrays of problems (errors) and warnings (e.g. duplicate entries). Also includes the sitemap type (urlset, sitemapindex, etc.) and an overall status field.
Example use cases
SEO audit before site launch
“Before we go live, can you check if the sitemap at https://mycompany.com is valid, how many URLs it has, and whether there are any errors or duplicate loc entries I need to fix?”
Monitor sitemap health after migration
“We just migrated our site — can you check https://newsite.example.com to find the sitemap, validate it, and tell me if any problems or warnings showed up?”
Verify sitemap discovered from robots.txt
“I want to know what sitemap robots.txt points to for https://blog.acme.com and whether that sitemap is valid and accessible with no issues.”
Technical details
Endpoint
GEThttps://robots-check.quietworklabs.workers.dev/v1/sitemap-check?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to validate an XML sitemap's structure, discover a sitemap from a site's robots.txt, count indexed URLs, or detect common sitemap problems like duplicate locs or missing lastmod dates. It is the right choice for SEO audits, pre-launch checks, and post-migration validation where sitemap correctness matters.
Side effects
- Sitemap not found (no sitemap referenced in robots.txt or provided URL returns 404)
- Malformed XML that cannot be parsed
- HTTP errors fetching the sitemap (non-200 status)
- Site URL cannot be resolved or is unreachable
- Sitemap too large to process within request limits
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"type": "urlset",
"status": "ok",
"locCount": 1240,
"problems": [],
"warnings": [
"3 duplicate <loc> entries"
],
"httpStatus": 200,
"sitemapUrl": "https://example.com/sitemap.xml",
"lastmodRange": {
"newest": "2026-10-15",
"oldest": "2024-02-01"
},
"discoveredFrom": "robots.txt"
}
}Tags
x402
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