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Link Preview Cache API
x402
Link Preview Cache API is a paid API for AI agents from link-preview-cache-api.onrender.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Fetches Open Graph and meta tag metadata (title, description, image, favicon, canonical URL) for any public URL, served from a shared cache for cost efficiency.
Price / call$0.003
Success—
StatusUnknown
How this service works
Fetch Open Graph / meta metadata (title, description, image, favicon, canonical URL) for a public URL - served from a shared cache when available, which is what keeps the price below a fresh-fetch-every-time service. Response includes a 'cached' field.
Output
A JSON object containing the page title, description, Open Graph image URL, favicon URL, canonical URL, final redirected URL, site name, content type, and a boolean 'cached' field indicating whether the result was served from the shared cache.
Example use cases
Link card generation in chat app
“I'm building a messaging app and want to show a rich link preview when someone pastes a URL. Can you fetch the title, description, og:image, and favicon for https://vercel.com/blog/turborepo-3-0 so I can render a preview card?”
Social post enrichment pipeline
“We're logging shared URLs in our social feed. For each link, I need the site name, canonical URL, and Open Graph image from https://stripe.com/blog/stablecoin-financial-infrastructure — pull it from cache if it's available to keep costs down.”
Content aggregator metadata lookup
“I'm building a newsletter aggregator and need to display rich previews. Fetch the Open Graph metadata for https://www.theverge.com/2024/1/1/example-article — I need the title, description, image, and whether it came from cache.”
Technical details
Endpoint
GEThttps://link-preview-cache-api.onrender.com/previewWhen to prefer
Choose this endpoint when you need fast, cheap Open Graph / meta tag extraction for public URLs and can tolerate cached results. It is ideal for link preview cards, content enrichment pipelines, and social sharing previews where fresh-every-time fetching is unnecessary. Prefer alternatives if you need guaranteed real-time freshness on every call or if the target URL requires authentication.
Side effects
- URL is not publicly accessible (private or behind auth) — returns error or empty fields
- URL returns non-HTML content type with no meta tags — limited or empty metadata
- URL redirects to a login wall — metadata reflects the login page, not the target
- Malformed or non-URI input — request validation error
- Cache miss on first fetch may result in slightly slower response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"url": "https://example.com/blog/hello-world",
"image": "https://example.com/og-image.png",
"title": "Hello World",
"cached": true,
"favicon": "https://example.com/favicon.ico",
"final_url": "https://example.com/blog/hello-world",
"site_name": "Example",
"description": "A short description of the page, from its meta tags.",
"content_type": "text/html; charset=utf-8",
"canonical_url": "https://example.com/blog/hello-world"
}
}Tags
x402
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