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CrawlSpur Robots.txt Self-Referencing Canonical Check
x402
CrawlSpur Robots.txt Self-Referencing Canonical 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 robots.txt file contains a self-referencing canonical URL declaration, returning an SEO audit finding for the target URL.
Price / call$0.001
Success—
StatusUnknown
How this service works
Prüft am Objekt robots-datei den Befund selbstreferenzierende kanonische Adresse.
Output
Returns an SEO audit finding indicating whether the robots.txt file at the target URL contains a self-referencing canonical URL, including the detected value or absence of such a declaration, and any relevant diagnostic details.
Example use cases
Pre-launch SEO robots.txt audit
“Before we go live, check whether the robots.txt at https://myshop.com/robots.txt has a self-referencing canonical set up correctly — I want to catch any canonical issues before Google starts crawling.”
Diagnosing canonical confusion for a client site
“My client's site at https://agencyclient.de is having canonical indexing problems — can you check their robots.txt for any self-referencing canonical URL issues that might be causing confusion?”
Automated SEO monitoring for a content platform
“Run a robots.txt self-referencing canonical check on https://blog.contentplatform.io and tell me if there's any finding I need to fix for proper SEO indexing.”
Technical details
Endpoint
POSThttps://crawlspur.halowerk.com/v1/pruef/crawlspur/canonical-selbst/robots-dateiWhen to prefer
Use this endpoint when you specifically need to audit a robots.txt file for self-referencing canonical URL declarations as part of a technical SEO workflow. It is purpose-built for this single SEO check, making it more precise than a generic crawler or full-site SEO audit tool. Prefer it for automated, per-URL SEO monitoring pipelines or pre-launch technical SEO checklists where canonical correctness in robots.txt is a required signal.
Side effects
- Target URL is unreachable or returns non-200 HTTP status — check returns an error finding
- robots.txt file does not exist at the target domain — endpoint may return a not-found finding
- Malformed or non-public URL provided — input validation error
- Target URL exceeds maximum length of 2048 characters — rejected with schema validation error
- CSS selector matches zero elements — first matching element used or error returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| ziel | — |
Tags
x402
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