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Crawlspur Canonical Self-Reference Check
x402
Crawlspur Canonical Self-Reference Check is a paid API for AI agents from crawlspur.halowerk.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Checks whether a webpage's canonical tag correctly points to itself (self-referencing canonical URL) on a given target URL.
Price / call$0.001
Success—
StatusUnknown
How this service works
Prüft am Objekt canonical den Befund selbstreferenzierende kanonische Adresse.
Output
Returns a structured finding indicating whether the canonical tag on the target page is self-referencing, including the detected canonical URL value and whether it matches the page's own address, along with any discrepancies found.
Example use cases
Technical SEO canonical audit
“Can you check whether https://shop.example.com/products/widget has a canonical tag that points to itself? I'm doing a technical SEO audit and need to confirm the canonical is self-referencing.”
Detecting canonical misconfiguration
“I think one of our pages might have a broken canonical setup — can you verify if https://myblog.com/article/top-10-tips correctly self-references its own canonical URL?”
Pre-launch SEO validation
“Before we go live, check https://staging.mysite.com/landing-page to make sure the canonical tag is pointing to itself and not some other URL.”
Technical details
Endpoint
POSThttps://crawlspur.halowerk.com/v1/pruef/crawlspur/canonical-selbst/canonicalWhen to prefer
Use this endpoint when you need to programmatically verify that a specific page's canonical tag self-references correctly — ideal for automated SEO audits, pre-publish checks, or monitoring pipelines where canonical correctness is critical. Prefer this over generic HTML parsers when you need a structured pass/fail finding specifically for canonical self-reference validation.
Side effects
- Target URL is unreachable or returns a non-200 HTTP status
- Page has no canonical tag present
- CSS selector matches zero or more than one element
- Target URL is not a valid public HTTP/HTTPS address
- Canonical tag exists but points to a different domain or path
- Network timeout when fetching the target page
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| ziel | — |
Tags
x402
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