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agentshelf.syntexa.ch Twitter Card Meta Extractor
x402
agentshelf.syntexa.ch Twitter Card Meta Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.008/call, status unknown (last checked 2026-09-29).
Extracts the twitter:card meta tag value from a public web page URL or raw HTML string, with SSRF protection.
Price / call$0.008
Success—
StatusUnknown
How this service works
Call when an agent needs twitter:card content via meta[name='twitter:card'] from a public page or HTML (SSRF-safe). Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/css-meta-twitter first.
Output
Returns the content value of the meta[name='twitter:card'] tag found in the page or HTML — typically a string like 'summary', 'summary_large_image', 'app', or 'player'. Returns null or an empty result if no such tag is found.
Example use cases
Social preview audit for SEO tool
“Check the twitter:card meta tag on https://mybrand.com/landing-page — I need to know what card type they have set so I can verify their Twitter sharing preview is configured correctly.”
Twitter card check from raw HTML
“I have this HTML snippet from a crawled page — can you pull out the twitter:card meta tag value from it so I know what card format it declares?”
Competitor social metadata research
“Look up the twitter:card meta tag on https://competitor.io and tell me what card type they're using for their Twitter link previews.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/css-meta-twitter?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to programmatically read the twitter:card meta tag from a public web page or a known HTML string, especially in agentic pipelines doing SEO audits, social preview validation, or web scraping. The SSRF-safe design makes it appropriate for production agent use. Prefer the free sandbox POST /v1/sandbox/css-meta-twitter endpoint first if available to avoid the $0.008 USDC cost.
Side effects
- URL is unreachable or returns non-200 status — no content extracted
- SSRF protection blocks requests to private/internal IP ranges or localhost
- HTML input exceeds 200,000 character limit — request rejected
- No twitter:card meta tag present in the HTML — empty or null result
- Malformed HTML may prevent tag detection
- URL scheme is not http/https — may be rejected
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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