Farcaster cast lookup · FC Cast

import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPay("https://agent402.tools/api/fc-cast", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "identifier": "0x322c451ed6ff1674328c6164b92166b3d15f2b7d"
  }),
});
const data = await res.json();

curl -X POST \
  "https://agent402.tools/api/fc-cast" \
  -H "Content-Type: application/json" \
  -d '{"identifier":"0x322c451ed6ff1674328c6164b92166b3d15f2b7d"}' \
  -H "X-PAYMENT: <signed x402 payment>"

{
  "cached": false,
  "cast": {
    "author": {
      "displayName": "Dan Romero",
      "fid": 3,
      "followerCount": 630338,
      "username": "dwr"
    },
    "channel": null,
    "embeds": [],
    "hash": "0x322c451ed6ff1674328c6164b92166b3d15f2b7d",
    "parentHash": null,
    "reactions": {
      "likes": 196,
      "recasts": 28
    },
    "replies": 50,
    "text": "quick let's all open up fc app to cast about fc dead",
    "timestamp": "2026-08-20T00:58:40.000Z",
    "url": "https://warpcast.com/dwr/0x322c451e"
  },
  "fetchedAt": "2026-08-22T13:19:12.000Z",
  "rateLimit": {
    "limit": 300,
    "remaining": 299,
    "resetAt": "2026-08-22T13:20:00.000Z"
  },
  "source": "neynar"
}