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AgentShelf Figcaption Extractor
x402
AgentShelf Figcaption Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.006/call, status unknown (last checked 2026-09-29).
Extracts figcaption text from a public webpage URL or raw HTML input, with SSRF protection.
Price / call$0.006
Success—
StatusUnknown
How this service works
Call when an agent needs figcaption text extracted from a public page or HTML (SSRF-safe). Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/profile-figcaption first.
Output
A list or block of figcaption text strings extracted from the provided URL or HTML input, covering all <figcaption> elements found on the page.
Example use cases
Image gallery caption harvesting
“Grab all the figcaption captions from https://www.museumsite.org/collection — I want a list of every caption that appears under the images on that page.”
Accessibility audit of HTML figures
“Here's the HTML for our new article page — can you pull out all the figcaption texts so I can check they're properly written and not missing?”
Research article figure caption extraction
“I've got the raw HTML of a scientific paper at https://journal.example.org/article/1234 — can you extract all the figure captions from it so I can summarize what the charts are about?”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/profile-figcaption?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to specifically extract <figcaption> text from a webpage or raw HTML, particularly when SSRF safety is a concern. It is purpose-built for figcaption extraction rather than general HTML scraping. Prefer the free sandbox POST /v1/sandbox/profile-figcaption before using this paid endpoint at $0.006 USDC per call.
Side effects
- URL is not publicly accessible or returns a non-200 status — extraction fails
- SSRF-blocked URL (private IP ranges, internal hostnames) — request rejected for safety
- HTML input exceeds 200,000 character limit — request rejected
- No figcaption elements found on the page — returns empty result
- Malformed or unparseable HTML — extraction may return partial or no results
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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