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Crawlspur Canonical Indexability Checker
x402
Crawlspur Canonical Indexability Checker 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 the technical indexability status of the canonical element on a given URL or web object.
Price / call$0.001
Success—
StatusUnknown
How this service works
Prüft am Objekt canonical den Befund technische Indexierbarkeit.
Output
Returns a structured finding ('Befund') describing whether the canonical element on the specified URL or web object is technically indexable, including any SEO-relevant issues detected with the canonical tag configuration.
Example use cases
Canonical indexability audit for landing page
“Check if the canonical element on https://shop.example.com/sale-page is technically indexable — I want to know if it could be blocking search engine indexing.”
Diagnose canonical issue on blog post
“My blog post at https://blog.mysite.com/article-2024 doesn't seem to be indexed by Google. Can you check whether the canonical tag on that page is set up correctly for indexability?”
QA check after site migration
“We just migrated our site and I need to verify that the canonical on https://newdomain.com/homepage is technically indexable before we go live.”
Technical details
Endpoint
POSThttps://crawlspur.halowerk.com/v1/pruef/crawlspur/indexierbar/canonicalWhen to prefer
Use this endpoint when you specifically need to audit the canonical tag of a webpage for technical indexability issues, especially as part of an automated SEO crawl pipeline or site health check. Prefer this over generic page crawlers when the specific concern is whether the canonical element is correctly configured to allow search engine indexing.
Side effects
- Invalid or unreachable URL returns an error or empty finding
- Malformed CSS selector results in no object match or first-match fallback
- Non-public or firewalled URLs may fail to fetch
- URL exceeds 2048 character limit causes validation error
- User agent string not matching required pattern causes rejection
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| ziel | — |
Tags
x402
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