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AgentShelf XPath figcaption Extractor
x402
AgentShelf XPath figcaption Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-02).
Extracts text content from all <figcaption> elements on a public webpage or raw HTML using XPath, returning the scraped caption texts.
Price / call$0.004
Success—
StatusUnknown
How this service works
Call when an agent needs text of //figcaption via //figcaption from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/xpath-figcaption first.
Output
Returns an array or list of text strings extracted from all <figcaption> elements found via XPath on the given public URL or HTML input, after SSRF-safe fetching of the page content.
Example use cases
Extract gallery image captions
“Grab all the figcaption texts from https://museumofscienceart.org/exhibits — I want to see every caption that appears under the figures on that page.”
Audit article figure descriptions
“Can you pull out all the figure captions from this HTML I have? I need to check that every image in the article has a proper caption written.”
Summarize photo essay captions
“Go to https://photojournalism.example.com/essay/2024 and extract all the figcaption elements — I want to read the captions the photographer wrote for each image.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/xpath-figcaption?utm_source=zero.xyzWhen to prefer
Use this endpoint when you specifically need to extract <figcaption> text from a public webpage or HTML string using XPath. Prefer the free sandbox variant (/v1/sandbox/xpath-figcaption) first if available. Choose this over a general HTML heading or title extractor when the target content is specifically figure captions, not headings, titles, or tables.
Side effects
- URL is private/internal (SSRF protection rejects it)
- Page returns non-200 HTTP status
- No <figcaption> elements present — returns empty result
- HTML input exceeds 200,000 character limit
- URL shorter than 8 characters or longer than 2048 characters — validation error
- Target page blocks scraping or requires authentication
- Malformed HTML that cannot be XPath-parsed
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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