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CSS Source Srcset Extractor
x402
CSS Source Srcset Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-29).
Extracts media source srcset attribute values from source[srcset] elements in a public webpage or raw HTML, with SSRF protection.
Price / call$0.004
Success—
StatusUnknown
How this service works
Call when an agent needs media source srcset values via source[srcset] from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/css-source-srcset first.
Output
Returns the srcset attribute values found within source elements on the page or HTML, giving the agent a list of responsive image source URLs and their descriptors (e.g. width or pixel density descriptors) as declared in the page's HTML.
Example use cases
Responsive image audit for a webpage
“Pull all the source srcset values from https://news.example.com/homepage — I want to see which responsive image URLs they're serving to different screen sizes.”
Extract srcset from raw HTML snippet
“I have some raw HTML here — can you parse out all the source[srcset] values from it so I can see the media sources being used?”
Scraping media sources for content pipeline
“For the article at https://blog.example.com/post/123, extract every source srcset entry so I can mirror those image assets to our CDN.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/css-source-srcset?utm_source=zero.xyzWhen to prefer
Use this endpoint when an agent needs to programmatically extract responsive image source sets (srcset attributes from HTML source elements) from a public webpage or a known HTML string, especially when SSRF safety is required. Prefer the free sandbox variant (/v1/sandbox/css-source-srcset) first; fall back to this paid endpoint when the sandbox is unavailable or for production use. Choose this over general HTML scrapers when you specifically need structured srcset/source element data rather than full page content.
Side effects
- URL is unreachable or returns non-200 status — extraction fails with error
- SSRF-blocked URL (private IP ranges, localhost) — rejected for security reasons
- HTML exceeds 200,000 character limit — request rejected
- No source[srcset] elements found — returns empty result
- Malformed HTML with no parseable source elements — may return empty result
- URL string shorter than 8 characters or longer than 2048 characters — schema validation error
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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