Skill: Link preview card

Bundled execution of the Link preview card workflow — The 'turn a URL into a card-shaped preview' workflow. Pull OpenGraph/Twitter card metadata, fetch the article body as a description fallback, normalize the og:image into a standard 1200×630 social card variant and a 400×400 square thumbnail, and extract URL/mention entities from the body for related-link surfacing. Five tools, one structured card payload ready for chat embeds, social shares, or RSS-to-card pipelines. One x402 payment runs 5 underlying tools (meta, extract, image-resize, image-thumbnail, extract-entities); partial-success per step.

Input

Field	Type	Description
url *	string	Public http(s) URL to build a preview card for (e.g. https://example.com/article)

Example output

{
  "pack": "link-preview",
  "args": {
    "url": "https://example.com"
  },
  "steps": [
    {
      "slug": "meta",
      "ok": true,
      "result": {}
    },
    {
      "slug": "extract",
      "ok": true,
      "result": {}
    },
    {
      "slug": "image-resize",
      "ok": true,
      "result": {}
    },
    {
      "slug": "image-thumbnail",
      "ok": true,
      "result": {}
    },
    {
      "slug": "extract-entities",
      "ok": true,
      "result": {}
    }
  ],
  "summary": "5/5 steps succeeded"
}

Try it — see the 402 challenge (free)

curl -i -X POST https://agent402.tools/api/skill/link-preview \
  -H "Content-Type: application/json" \
  -d '{"url":"https://example.com"}'

The response is HTTP 402 Payment Required with exact payment requirements. Any x402 v2 client pays automatically and retries:

Paid call (JavaScript agent)

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client();
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/skill/link-preview", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "url": "https://example.com"
  }),
});

Wallet-only. This tool reaches the network/browser/storage, so it is paid in USDC via x402 (no proof-of-work tier).

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