Farcaster User Profile Lookup

x402

Farcaster User Profile Lookup 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 including FID, username, display name, and follower count by FID, username, or connected wallet address

Price / call$0.02

Seller volume →—

Success—

StatusUnknown

How this service works

Get Farcaster user profile by FID, username, or connected address

Output

Returns a JSON object with the user's Farcaster ID (FID), username, display name, and follower count for the queried user.

Example use cases

Example prompt

“Can you pull up the Farcaster profile for the user 'linda' — I want to see her FID, display name, and how many followers she has?”

Technical details

Endpoint

GEThttps://api.web3identity.com/api/farcaster/linda

When to prefer

Use this endpoint when you need to resolve a Farcaster identity — username, FID, or connected wallet address — into a structured user profile with social stats. Prefer this over scraping Farcaster directly or using on-chain lookups when you need a fast, aggregated profile response including follower counts and display names.

Side effects

Username or FID not found — returns 404 or empty result
Invalid or unrecognized wallet address — no profile match
Payment not included or rejected — 402 payment required error
Rate limiting or server error — 5xx response
Malformed query parameter — 400 bad request

Input

{
  "input": {
    "type": "http",
    "method": "GET",
    "queryParams": {}
  }
}

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

{
  "bio": "taking a break to self study physics. previously: dev eco @farcaster, cofounder \n@bountycaster and scalar capital, early @coinbase, coproducer @ethereumfilm",
  "fid": 12,
  "avatar": "https://imagedelivery.net/BXluQx4ige9GuW0Ia56BHw/6aa18817-6238-4b25-086f-1edd0c438f00/original",
  "source": "warpcast",
  "username": "linda",
  "verified": false,
  "followers": 251321,
  "following": 1341,
  "timestamp": "2026-05-29T18:37:29.732Z",
  "displayName": "Linda Xie"
}

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Technical details

Endpoint

GEThttps://api.web3identity.com/api/farcaster/linda

When to prefer

Side effects

Username or FID not found — returns 404 or empty result
Invalid or unrecognized wallet address — no profile match
Payment not included or rejected — 402 payment required error
Rate limiting or server error — 5xx response
Malformed query parameter — 400 bad request

Input

{
  "input": {
    "type": "http",
    "method": "GET",
    "queryParams": {}
  }
}

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

{
  "bio": "taking a break to self study physics. previously: dev eco @farcaster, cofounder \n@bountycaster and scalar capital, early @coinbase, coproducer @ethereumfilm",
  "fid": 12,
  "avatar": "https://imagedelivery.net/BXluQx4ige9GuW0Ia56BHw/6aa18817-6238-4b25-086f-1edd0c438f00/original",
  "source": "warpcast",
  "username": "linda",
  "verified": false,
  "followers": 251321,
  "following": 1341,
  "timestamp": "2026-05-29T18:37:29.732Z",
  "displayName": "Linda Xie"
}