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Lumen Agent Utilities – URL Unfurl
x402
Lumen Agent Utilities – URL Unfurl is a paid API for AI agents from lumenworks-x402-decoder.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-11).
Follows redirects on a URL and returns the final destination's HTTP status, page title, description, OpenGraph/Twitter metadata, favicon, canonical URL, language, and other rich link-preview data.
Price / call$0.001
Success—
StatusUnknown
How this service works
Unfurl a URL: final URL after redirects, HTTP status, title, description, OpenGraph/Twitter image, site name, canonical, favicon, language, published time.
Output
A JSON object containing: the final URL after all redirects, HTTP status code, page title, meta description, OpenGraph image URL, Twitter card type, site name, canonical URL, favicon URL, detected language, content type, and link count found on the page.
Example use cases
Link preview before sharing
“Before I post this link in my newsletter, can you check https://techcrunch.com/2024/01/10/some-article and tell me the final URL, page title, description, and preview image so I can build a nice card for it?”
Redirect chain resolution
“I got this short link https://bit.ly/xyz789 in an email and I'm not sure where it actually goes — can you follow the redirects and tell me the final URL and whether the page loaded successfully?”
Bulk link metadata for content curation
“I'm building a reading list and need metadata for this article: https://www.wired.com/story/some-story — give me the title, description, language, site name, and canonical URL.”
Technical details
Endpoint
POSThttps://lumenworks-x402-decoder.onrender.com/v1/web/unfurl?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need rich link-preview metadata (title, description, OG image, canonical, favicon) from a single URL, especially when the URL may involve redirects. Prefer this over a generic HTTP HEAD check when you need page content metadata, not just reachability. It is ideal for building link cards, validating URLs before display, resolving short links, or enriching content with page context.
Side effects
- URL is unreachable or times out — HTTP status will reflect the error (e.g. 404, 503)
- Malformed or non-HTTP URL input — likely returns an error response
- Page has no OpenGraph/meta tags — relevant fields will be null or absent
- Paywalled or bot-blocked pages may return redirect loops or login-page metadata instead of target content
- x402 payment not included or invalid — returns 402 Payment Required before processing
Output
Schema · Response
{
"type": "json",
"example": {
"url": "https://github.com/",
"lang": "en",
"type": "object",
"image": "https://images.ctfassets.net/8aevphvgewt8/4pe4eOtUJ0ARpZRE4fNekf/f52b1f9c52f059a33170229883731ed0/GH-Homepage-Universe-img.png",
"title": "GitHub · Change is constant. GitHub keeps you ahead. · GitHub",
"status": 200,
"favicon": "https://github.githubassets.com/favicons/favicon.png",
"siteName": "GitHub",
"canonical": "https://github.com/",
"linkCount": 140,
"contentType": "text/html; charset=utf-8",
"description": "Join the world's most widely adopted, AI-powered developer platform where millions of developers, businesses, and the largest open source community build software that advances humanity.",
"twitterCard": "summary_large_image"
}
}Tags
x402
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