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AgentShelf XPath Header Extractor
x402
AgentShelf XPath Header Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.007/call, status unknown (last checked 2026-10-02).
Extracts the text content of header elements (h1–h6) from a public webpage URL or raw HTML using XPath, with SSRF protection.
Price / call$0.007
Success—
StatusUnknown
How this service works
Call when an agent needs text of //header via //header from a public page or HTML (SSRF-safe). Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/xpath-header first.
Output
Returns the extracted text content of the matched header element(s) found on the page or within the provided HTML, using XPath selection against h1–h6 tags.
Example use cases
Extract article title from news page
“Grab the h1 heading from https://www.bbc.com/news/technology-12345678 so I can display the article title in my dashboard.”
Check competitor page headline
“What's the main h1 heading on our competitor's homepage at https://competitor.com? I want to see how they're positioning themselves.”
Parse header from HTML snippet
“I have this HTML snippet from a product page — can you extract the h2 header text from it? Here's the HTML: <html><body><h2>Best Running Shoes 2024</h2><p>...</p></body></html>”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/xpath-header?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to extract only the header/heading text from a page rather than full content, and you want SSRF-safe URL fetching built in. Use the unpaid sandbox POST /v1/sandbox/xpath-header first for testing; use this paid endpoint in production when you need reliable, low-latency header extraction at $0.007 USDC per call.
Side effects
- URL is unreachable or returns a non-200 status
- SSRF protection blocks private/internal IP ranges
- HTML is malformed and cannot be parsed
- No matching header element found at the specified XPath
- Input exceeds maxLength limits (URL > 2048 chars, HTML > 200000 chars)
- Payment of $0.007 USDC fails or is not provided
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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