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Agent402 Farcaster Channel Lookup
x402
Agent402 Farcaster Channel Lookup is a paid API for AI agents from agent402.tools, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).
Fetches metadata for a Farcaster channel by its ID or parent URL, including follower count, member count, moderators, and description.
Price / call$0.003
Success—
StatusUnknown
How this service works
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.
Output
Returns a JSON object with the channel's id, name, URL, description, imageUrl, createdAt timestamp, parentUrl, memberCount, followerCount, publicCasting flag, pinnedCastHash, moderatorFids, and lead user details (fid, username, displayName, followerCount). Also includes a fetchedAt timestamp, cache status, source attribution (Neynar), and rate limit info (limit, remaining, resetAt).
Example use cases
Channel growth tracking for community manager
“Pull the current follower count and member count for the Farcaster channel 'degen' so I can track how it's growing week over week.”
Moderator discovery for outreach
“Who are the moderators of the Farcaster channel 'zora'? I need their FIDs so I can reach out about a partnership.”
Channel validation before integration
“I'm building a bot that posts to the 'base' Farcaster channel — can you confirm its parent URL, whether public casting is allowed, and fetch its current metadata?”
Technical details
Endpoint
POSThttps://agent402.tools/api/fc-channelWhen to prefer
Use this endpoint when you need structured metadata about a specific Farcaster/Warpcast channel — its follower count, member list size, moderators, or description — and you have the channel ID or its parent URL. It's backed by Neynar, a leading Farcaster indexer, and returns richer per-channel detail than a general social graph search. Prefer it over scraping Warpcast directly or using a generic social API that doesn't understand Farcaster's channel model.
Side effects
- Invalid or unknown channel ID returns an error or empty result
- Malformed parent URL input may fail to resolve to a channel
- Rate limit exceeded: rateLimit.remaining reaches 0 before resetAt
- Neynar upstream outage causes lookup failure
- Channel ID string typo returns null or not-found response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| id | string | Channel id (e.g. base) or its https parent URL. |
Output
Schema · Response
{
"type": "json",
"example": {
"cached": false,
"source": "neynar",
"channel": {
"id": "base",
"url": "https://warpcast.com/~/channel/base",
"lead": {
"fid": 12142,
"username": "base.base.eth",
"displayName": "Base",
"followerCount": 194536
},
"name": "Base",
"imageUrl": "https://warpcast.com/~/channel-images/base.png",
"createdAt": "2023-08-17T19:23:11.150Z",
"parentUrl": "https://onchainsummer.xyz",
"description": "Bringing the world onchain - a community of builders on Base",
"memberCount": 813,
"followerCount": 481202,
"moderatorFids": [
12142,
15211,
99
],
"publicCasting": false,
"pinnedCastHash": null
},
"fetchedAt": "2026-08-22T13:19:12.000Z",
"rateLimit": {
"limit": 300,
"resetAt": "2026-08-22T13:20:00.000Z",
"remaining": 299
}
}
}Tags
x402
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