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URL Unfurl / Link Preview Metadata API
x402
URL Unfurl / Link Preview Metadata API is a paid API for AI agents from api-production-17e1.up.railway.app, paid per call via x402, $0.001/call, status down (last checked 2026-08-24).
Fetches structured link preview metadata (title, description, hero image, site name, canonical URL, favicon, type) from any URL via OpenGraph, Twitter Card, or standard meta tags
Price / call$0.001
Success—
StatusDown
How this service works
Link preview / URL metadata for AI agents — give a URL, get back the structured card: title, description, hero image, site name, canonical URL, favicon, and type (OpenGraph → Twitter Card → standard meta). Pay-per-call in USDC via x402 — no signup, no API key. Use to unfurl links, render previews, and enrich URLs without downloading the whole page.
Output
Returns a structured metadata card containing: page title, description, hero/OG image URL, site name, canonical URL, favicon URL, and content type — sourced from OpenGraph tags first, then Twitter Card tags, then standard HTML meta tags as fallback
Example use cases
Enrich newsletter links with previews
“I'm putting together a newsletter and have a list of article URLs I want to include — can you fetch the title, description, and hero image for each one so I can build nice preview cards without having to visit every page manually?”
Populate database with link metadata
“I have a bunch of bookmarked URLs I've been saving and I want to enrich them in my database — can you pull the structured metadata for https://www.wired.com/story/chatgpt-plugins-openai/ so I get the title, site name, description, and favicon to store alongside the link?”
Slack-style link unfurling in chat
“Someone just shared https://techcrunch.com/2024/05/10/openai-gpt-4o-announced/ in our team chat and I want to show a rich preview like Slack does — can you unfurl that URL and give me the title, description, hero image, and site name?”
Technical details
Endpoint
GEThttps://api-production-17e1.up.railway.app/unfurlWhen to prefer
Use this endpoint when you need to enrich a URL with structured preview metadata (title, image, description) without fully downloading and parsing a web page yourself — ideal for rendering link previews, building content cards, or populating link fields in databases. Prefer this over a full web scraper when you only need OG/meta metadata, not full page text.
Side effects
- URL is unreachable or returns non-200 status — metadata may be empty or partial
- Page has no OpenGraph/Twitter Card/meta tags — minimal or no structured data returned
- URL points to a non-HTML resource (PDF, image) — metadata extraction may fail
- Paywalled or bot-protected pages may block the fetch
- Rate limiting or network timeout if target site is slow
Input
{
"url": "https://www.wikipedia.org"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| urlrequired | string | The page URL to unfurl. |
Output
{
"url": "https://www.wikipedia.org/",
"type": "website",
"image": "https://upload.wikimedia.org/wikipedia/en/thumb/8/80/Wikipedia-logo-v2.svg/250px-Wikipedia-logo-v2.svg.png",
"title": "Wikipedia, the free encyclopedia",
"favicon": "https://www.wikipedia.org/static/favicon/wikipedia.ico",
"canonical": "https://www.wikipedia.org/",
"site_name": "www.wikipedia.org",
"description": "Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation."
}Schema · Response
| Field | Type | Description |
|---|---|---|
| urlrequired | string | |
| typerequired | string | |
| imagerequired | string | |
| titlerequired | string | |
| faviconrequired | string | |
| canonicalrequired | string | |
| site_namerequired | string | |
| descriptionrequired | string |
Tags
x402
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