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SiteSignal Link Preview
x402
SiteSignal Link Preview is a paid API for AI agents from trinity-throw-thursday-gravity.trycloudflare.com, paid per call via x402, $0.005/call, status down (last checked 2026-09-15).
Fetches a bounded link preview for a public webpage, returning its title, description, canonical URL, and social image.
Price / call$0.005
Success—
StatusDown
How this service works
Extract a bounded public webpage link preview with title, description, canonical URL, and referenced social image.
Output
Returns a structured link preview object containing the page's title, meta description, canonical URL, and the URL of the referenced social (Open Graph or Twitter card) image — bounded to the public webpage at the provided URL.
Example use cases
Social share card enrichment
“Grab the link preview for https://openai.com so I can get the title, description, and social image to populate a share card on my site.”
Canonical URL verification
“What's the canonical URL and meta description returned when you fetch a link preview for https://www.theverge.com/tech?”
Content aggregator metadata fetch
“I'm building a newsletter digest — can you pull the link preview for https://techcrunch.com/2024/05/01/some-article so I have the title and thumbnail image ready?”
Technical details
Endpoint
GEThttps://trinity-throw-thursday-gravity.trycloudflare.com/x402/link-previewWhen to prefer
Use this endpoint when you need a quick, bounded link preview extraction — title, description, canonical URL, and social image — from a single public webpage, especially in agentic workflows that enrich links for sharing, newsletters, or content aggregation. It is priced at $0.005 per call (x402), making it suitable for high-volume link enrichment pipelines. Prefer it over full-page scraping APIs when you only need social/OG metadata and not full HTML or structured body content.
Side effects
- URL is not publicly accessible or returns a non-200 status
- Page has no meta description or Open Graph tags, resulting in empty fields
- Canonical URL or social image is missing from the page
- Malformed or invalid URL input causes a validation error
- Cloudflare tunnel is temporarily unavailable causing a connection error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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