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Canonical URL Check
x402
Canonical URL Check is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Checks a web page's rel=canonical tag, whether it is self-referencing, absolute, on the same host, the final URL after redirects, and noindex status to catch duplicate-content and indexing mistakes.
Price / call$0.01
Success—
StatusUnknown
How this service works
Canonical URL check: the rel=canonical of a page, whether it is self-referencing, absolute and on the same host, the final URL after redirects, and whether the page is set noindex. Catch duplicate-content and indexing mistakes. $0.01 per page.
Output
Returns the rel=canonical URL found on the page, a flag indicating whether it is self-referencing, whether it is an absolute URL, whether it is on the same host as the page, the final URL after any redirect chain, and whether the page is marked noindex.
Example use cases
SEO audit for duplicate content
“Check the canonical URL on https://shop.example.com/products/blue-widget — I need to know if it's self-referencing, absolute, and on the same host, or if it's pointing somewhere weird that could cause duplicate content issues.”
Pre-launch indexing verification
“Before we go live, can you verify that https://staging.mysite.com/landing-page isn't accidentally set to noindex and that its canonical tag is correct and self-referencing?”
Redirect chain and canonical mismatch check
“I think there might be a redirect messing up the canonical for https://myblog.com/old-article-url — can you tell me the final URL after redirects and whether the canonical matches up correctly?”
Technical details
Endpoint
GEThttps://intel.rallylive.ca/site/canonicalWhen to prefer
Choose this endpoint when you need to specifically audit the canonical tag configuration, noindex status, and redirect chain of a single page for SEO health — especially when diagnosing duplicate content issues, verifying indexability, or checking canonical correctness during a site audit. Prefer this over a general webpage metadata extractor when the canonical/redirect/noindex combination is the primary focus.
Side effects
- Page URL is unreachable or returns a non-200 status — endpoint may return an error or partial data
- Page has no canonical tag — result will indicate absence of canonical
- Redirect loop or excessive redirects may cause timeout or failure
- Invalid or malformed URL input may result in a validation error
- Paywalled or JavaScript-rendered pages may not expose canonical tags correctly
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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