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Syntexa AgentShelf Hreflang List Extractor
x402
Syntexa AgentShelf Hreflang List Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-01).
Extracts all hreflang alternate link elements from a public URL or raw HTML, returning a structured list of language/region alternates.
Price / call$0.003
Success—
StatusUnknown
How this service works
Call when an agent needs hreflang alternates extracted from a public page or HTML (SSRF-safe). Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/hreflang-list first.
Output
A structured list of hreflang alternate entries found on the page, each including the hreflang attribute value (language/region code, e.g. 'en-US', 'fr', 'x-default') and the corresponding alternate URL. Returns an empty list if no hreflang tags are found.
Example use cases
SEO international audit
“I need to audit the hreflang setup on our homepage at https://www.mycompany.com — can you extract all the hreflang alternate links so I can check if we're correctly targeting all our international markets?”
Verify hreflang from raw HTML
“I have the HTML of a page I scraped — can you parse out all the hreflang link elements from it so I know what language alternates are declared?”
Competitor localization research
“Can you fetch and list all the hreflang alternate URLs from https://www.competitor.com/products so I can see which languages and regions they're actively targeting?”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/hreflang-list?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to programmatically extract hreflang alternate link data from a live URL or raw HTML for SEO auditing, internationalization analysis, or localization research. It is SSRF-safe for fetching public URLs and accepts raw HTML if you already have the markup. Prefer the free POST /v1/sandbox/hreflang-list first for testing; use this paid endpoint ($0.003 USDC) for production workloads or when the sandbox is unavailable.
Side effects
- URL is unreachable or returns non-200 status — fetch error returned
- HTML content exceeds 200,000 character limit — input rejected
- URL is blocked by SSRF safety rules (private/internal addresses) — request refused
- No hreflang tags present in page — empty list returned
- Malformed HTML causes parsing failure — error or partial results
- URL shorter than 8 characters or longer than 2048 characters — validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | Public http(s) URL to fetch. When html is also sent, this is only the base for relative links. Provide url or html. |
| html | string | HTML to parse locally instead of fetching. When both html and url are set, html is used. Provide html or url. |
Tags
x402
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