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Farcaster User Profile Lookup by FID, Username, or Address
x402
Farcaster User Profile Lookup by FID, Username, or Address is a paid API for AI agents from api.web3identity.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).
Retrieves a Farcaster user's profile (FID, username, display name, followers) given their FID, username, or connected wallet address
Price / call$0.02
Success—
StatusUnknown
How this service works
Get Farcaster user profile by FID, username, or connected address
Output
Returns a JSON object containing the user's Farcaster ID (FID), username, display name, and follower count for the matched profile.
Example use cases
Verify influencer follower count
“I'm considering a partnership with a Farcaster creator who goes by 'vitalik.eth' — can you pull up their Farcaster profile and let me know their display name, FID, and how many followers they have?”
Resolve wallet to Farcaster identity
“I have this Ethereum wallet address 0x8fc5d6afe572fefc4ec153be68a46648b5dbda2e — can you find out if it's linked to a Farcaster account and give me the username, FID, and follower count?”
Compare two Farcaster user profiles
“Can you look up the Farcaster profiles for both 'dwr' and 'balajis' and compare their follower counts and display names side by side?”
Technical details
Endpoint
GEThttps://api.web3identity.com/api/farcaster/barmstrongWhen to prefer
Use this endpoint when you need to resolve a Farcaster identity — by username, FID, or connected wallet address — and retrieve social profile metadata like follower count and display name. Prefer this over generic ENS or on-chain lookups when the target identity is specifically on the Farcaster social protocol.
Side effects
- Username or FID not found — returns 404 or empty result
- Invalid address format — query fails validation
- Payment required (402) if x402 payment not included
- Rate limiting if too many requests are made
- Farcaster network downtime causing upstream failure
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"bio": "ENS: barmstrong.eth",
"fid": 20,
"avatar": "https://i.imgur.com/4t3zVHj.jpg",
"source": "warpcast",
"username": "barmstrong",
"verified": false,
"followers": 79596,
"following": 50,
"timestamp": "2026-06-12T01:59:11.555Z",
"displayName": "Brian Armstrong"
}Tags
x402
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