Farcaster channel details

Details for one Farcaster channel by id (e.g. base) or FIP-2 parent URL: name, description, follower and member counts, public-casting flag, creation date, lead and moderator fids, pinned cast. Use to validate a channel id before pulling its feed, or to size a community.

TRY IN PLAYGROUND →

Input

Example output

{
  "source": "neynar",
  "fetchedAt": "2026-08-22T13:19:12.000Z",
  "cached": false,
  "rateLimit": {
    "limit": 300,
    "remaining": 299,
    "resetAt": "2026-08-22T13:20:00.000Z"
  },
  "channel": {
    "id": "base",
    "name": "Base",
    "description": "Bringing the world onchain - a community of builders on Base",
    "parentUrl": "https://onchainsummer.xyz",
    "imageUrl": "https://warpcast.com/~/channel-images/base.png",
    "followerCount": 481202,
    "memberCount": 813,
    "publicCasting": false,
    "createdAt": "2023-08-17T19:23:11.150Z",
    "lead": {
      "fid": 12142,
      "username": "base.base.eth",
      "displayName": "Base",
      "followerCount": 194536
    },
    "moderatorFids": [
      12142,
      15211,
      99
    ],
    "pinnedCastHash": null,
    "url": "https://warpcast.com/~/channel/base"
  }
}

Try it - see the 402 challenge (free)

curl -i -X POST https://agent402.tools/api/fc-channel \
  -H "Content-Type: application/json" \
  -d '{"id":"base"}'

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/fc-channel", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "id": "base"
  }),
});

Related tools