+ farcaster-user-profile

> Farcaster user profile

// Returns Farcaster user profile data including bio, followers, and verification

socialfarcasterprofileuser

Returns Farcaster user profile data including bio, followers, and verification. Agents can request it by capability ID social.farcaster.user, or by plain intent — EntRoute resolves phrases like “farcaster user”, “farcaster profile” and “fc user” to this capability.

EntRoute currently lists 2 endpoints from 1 provider for social.farcaster.user, priced from $0.001 to $0.002 per call, settled in USDC on Base. The quickest responds in about 211ms at the 95th percentile. Every endpoint below is re-probed every 10 minutes for a valid 402 payment challenge; the ordering blends measured success rate, latency and price rather than provider claims.

// aliases.json

These phrases resolve to this capability with intent-based discovery.

"farcaster user" "farcaster profile" "fc user" "warpcast profile"
// discover.sh
curl -X POST https://api.entroute.com/discover \
  -H "Content-Type: application/json" \
  -d '{"capability_id": "social.farcaster.user"}'
// endpoints.json
2 results
#1 Neynar listed
$0.0020
https://api.neynar.com/v2/farcaster/user/bulk
success: 100%
latency: 211ms
// sample request
{
  "fids": "5650,2,3"
}
// sample response
{
  "users": [
    {
      "fid": 5650,
      "username": "vitalik",
      "display_name": "Vitalik Buterin"
    },
    {
      "fid": 2,
      "username": "v",
      "display_name": "Varun"
    }
  ]
}
#2 Neynar listed
$0.0010
https://api.neynar.com/v2/farcaster/user/by_username
success: 100%
latency: 269ms
// sample request
{
  "username": "vitalik"
}
// sample response
{
  "user": {
    "fid": 5650,
    "username": "vitalik",
    "display_name": "Vitalik Buterin",
    "pfp_url": "https://...",
    "follower_count": 150000,
    "following_count": 500,
    "bio": "Ethereum"
  }
}
// integrate.md

Use this capability in your agent or application:

// faq

Frequently asked questions about Farcaster user profile

How much does a farcaster user profile API call cost?

Endpoints listed for social.farcaster.user on EntRoute are priced from $0.001 to $0.002 per call. Payment is per request — there is no subscription, account or API key. Prices shown are read from each endpoint's live 402 response, not from a provider-supplied catalogue.

How do AI agents pay for farcaster user profile endpoints?

Via the x402 protocol. The agent calls the endpoint, receives an HTTP 402 Payment Required response describing the price and recipient, signs a stablecoin payment (USDC on Base), and retries the request with proof of payment. The whole exchange takes seconds and needs no human approval.

How many providers offer farcaster user profile?

2 endpoints are currently listed for social.farcaster.user across 1 provider. That number moves as endpoints are added and as failing ones are demoted.

Are these farcaster user profile endpoints verified?

Each one is probed every 10 minutes to confirm it still returns a well-formed 402 challenge on a payable network. Endpoints whose 7-day success rate drops below 50% are moved out of the ranked list into fallbacks with an explicit exclusion reason, so an agent can decide whether to retry them.