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agentshelf.syntexa.ch XPath Image Alt Extractor
x402
agentshelf.syntexa.ch XPath Image Alt Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-24).
Extracts alt attribute values from all img elements on a public webpage or HTML snippet using XPath (//img/@alt), SSRF-safe.
Price / call$0.001
Success—
StatusUnknown
How this service works
Call when an agent needs alt attributes of //img via //img/@alt from a public page or HTML (SSRF-safe). Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/xpath-img-alt first.
Output
Returns a list of alt attribute values extracted from all img elements found on the given page or HTML, using the XPath expression //img/@alt. Results may be empty strings where images lack alt attributes.
Example use cases
SEO image alt audit
“Go to https://myblog.com/homepage and extract all the image alt attributes — I need to review whether our images have proper alt text for SEO.”
Accessibility compliance check
“Fetch all img alt values from this HTML snippet I have and tell me which images are missing alt descriptions so I can fix accessibility issues.”
Competitor image metadata research
“Scrape the alt text from every image on https://competitor.com/products and give me the full list so I can see how they label their product photos.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/xpath-img-alt?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to extract specifically the alt attributes from img elements on a public webpage or HTML string. It is purpose-built for XPath-based alt text extraction and is SSRF-safe. Prefer the free sandbox POST /v1/sandbox/xpath-img-alt endpoint first if available; use this paid version when the sandbox is unavailable or rate-limited. Choose this over general HTML scrapers when you specifically need structured alt attribute data rather than full page content.
Side effects
- URL is not publicly accessible or returns a non-200 status
- SSRF-blocked URL (private IP ranges, localhost) rejected for security
- HTML content exceeds 200,000 character limit
- URL string shorter than 8 characters or longer than 2048 characters
- Page has no img elements, returning empty array
- Malformed HTML that cannot be parsed
- Network timeout fetching the remote URL
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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Zero review prompt (fires after every successful call)
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