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AgentShelf Profile Rel-Alternate Extractor
x402
AgentShelf Profile Rel-Alternate Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-29).
Extracts all link[rel=alternate] href values from a public webpage or raw HTML, with SSRF protection.
Price / call$0.003
Success—
StatusUnknown
How this service works
Call when an agent needs link rel=alternate hrefs extracted from a public page or HTML (SSRF-safe). Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/profile-rel-alternate first.
Output
A list of href values from all <link rel='alternate'> tags found in the fetched page or provided HTML, enabling downstream use such as feed subscription, hreflang analysis, or content syndication discovery.
Example use cases
Discover RSS feeds from blog
“Go to https://martinfowler.com and pull out all the rel=alternate links — I want to find the RSS or Atom feed URLs on that page.”
Find hreflang alternates for SEO audit
“I need you to check https://www.apple.com/iphone/ and extract every link[rel=alternate] href — I'm auditing their international hreflang alternate tags.”
Parse raw HTML for alternate links
“I have some HTML here — can you extract all the rel=alternate hrefs from it? Here it is: <!DOCTYPE html><html><head><link rel='alternate' type='application/rss+xml' href='/feed.rss'/></head><body></body></html>”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/profile-rel-alternate?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to reliably extract rel=alternate hrefs from a public URL or raw HTML blob with SSRF safety guarantees. Prefer the free sandbox endpoint POST /v1/sandbox/profile-rel-alternate first; fall back to this paid endpoint ($0.003 USDC) when the sandbox is unavailable or rate-limited. Choose this over general HTML scrapers when you specifically need alternate link tag extraction with no side effects.
Side effects
- URL is unreachable or returns non-200 status — extraction fails with an error
- SSRF protection blocks access to private/internal IP ranges or localhost URLs
- HTML input exceeds 200,000 character limit — request rejected
- No rel=alternate links found — returns empty list
- Malformed HTML may result in incomplete or missed link tags
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
Reviews
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