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AgentShelf CSS a[hreflang] Extractor
x402
AgentShelf CSS a[hreflang] Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-29).
Extracts anchor hreflang attribute values (a[hreflang]) from a public URL or raw HTML using CSS selector parsing, with SSRF protection.
Price / call$0.004
Success—
StatusUnknown
How this service works
Call when an agent needs anchor hreflang values via a[hreflang] from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/css-a-hreflang first.
Output
Returns a list of hreflang attribute values found in anchor (a) elements on the specified page or HTML, indicating language and regional targeting (e.g. 'en-US', 'fr-FR', 'de'). Useful for SEO audits and internationalization checks.
Example use cases
Audit hreflang on international site
“Check https://www.acme.com and extract all the a[hreflang] values so I can see which language and country variants they're targeting.”
Validate hreflang from raw HTML
“I have this HTML snippet from a page — can you parse out all the anchor hreflang attributes so I can verify the language alternates are set up correctly?”
SEO competitor hreflang analysis
“Go to https://competitor.com/product-page and grab all the hreflang anchor tag values — I want to know which markets they're targeting with alternate URLs.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/css-a-hreflang?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to extract hreflang attribute values from anchor tags on a public webpage or a known HTML snippet, especially in SEO auditing, internationalization verification, or competitor analysis workflows. It is SSRF-safe, making it suitable for agent pipelines that fetch external URLs. If you have access to the unpaid sandbox version at POST /v1/sandbox/css-a-hreflang, prefer that first to avoid the $0.004 USDC cost.
Side effects
- URL is unreachable or returns non-200 status — endpoint may return an error or empty result
- SSRF protection blocks access to private/internal IP ranges or localhost URLs
- HTML input exceeds 200,000 character limit — request rejected
- No a[hreflang] elements found on page — returns empty list
- Malformed HTML may result in incomplete or no extraction
- URL exceeds 2048 character length limit — request rejected
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | Public page to fetch. The selector or profile is fixed by the SKU. Provide url or html. |
| html | string | HTML to extract from locally. Provide html or url. When both are set, html is used. |
Tags
x402
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