Link preview API: OpenGraph and Twitter card metadata

$0.01 per call · failed calls are never charged · no account or subscription: pay per call with a card key or USDC

Fetch a public web page's head and return link-preview metadata: title, description, site name, type, preview image, canonical URL, language, author, published time, favicon, theme colour, and every OpenGraph and Twitter-card field. Reads at most 1 MB and never runs JavaScript. Use to build link previews, label citations or check how a URL will unfurl before sharing it.

When to use it

Run it free (25 free calls) Buy credits by card (from $1) Example result (JSON)

Try it with your own inputs

Absolute public http(s) URL of the page

Uses one of your 25 free calls. Nothing is charged, and a call that fails is not counted.

Inputs

NameTypeDescription
url (required)stringAbsolute public http(s) URL of the page

Request

Over HTTP, with a card key from /credits:

curl -H "Authorization: Bearer adt_…" "https://tools.funwords.eu/url/meta?url=https%3A%2F%2Fgithub.com%2F"

Or one of your 25 free calls, no key:

curl "https://tools.funwords.eu/url/meta?url=https%3A%2F%2Fgithub.com%2F&trial=1"

Without a key, the same URL answers 402 Payment Required with x402 and MPP terms, so an agent with a wallet pays per call in USDC (Base, Polygon, Arbitrum or Solana over x402; Base or Tempo over MPP) and retries.

Example result

{
  "url": "https://github.com/",
  "finalUrl": "https://github.com/",
  "title": "GitHub",
  "description": "…",
  "siteName": "GitHub",
  "type": "object",
  "image": "https://github.githubassets.com/…",
  "canonical": "https://github.com/",
  "lang": "en",
  "author": null,
  "publishedTime": null,
  "favicon": "https://github.githubassets.com/…",
  "themeColor": null,
  "openGraph": {
    "og:site_name": "GitHub"
  },
  "twitter": {
    "twitter:card": "summary_large_image"
  }
}

From an AI agent (MCP)

Add the MCP server to Claude, Cursor or any MCP client. This tool is url_meta, and the first 25 successful calls are free:

https://tools.funwords.eu/mcp

Questions

Does it run JavaScript?

No. It reads at most 512 KB of the page's head and never runs JavaScript.

How do I pay?

Each successful call costs $0.01; failed calls are not charged. The first 25 calls are free. Then pay with card credits (from $1; the key goes in an Authorization header or, for clients that can only fetch a URL, as api_key= in the URL) or per call in USDC over x402 or MPP. No account is needed.

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