Farcaster Intel API

Structured Farcaster intelligence for AI agents. Pay per query in USDC on Base via x402. No API key. No subscription.

🔍 Human? Use the free lookup tool.

Look up any Farcaster user — reputation, followers, recent casts. Free, no wallet needed.

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📡 Channel Intelligence

Explore any Farcaster channel — top casters, trending topics, engagement stats.

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GET /api/user

User reputation, social graph, recent activity. $0.005 USDC / query

# Request

GET /api/user?username=dwr

# Response

{
  "fid": 3,
  "username": "dwr",
  "reputation_score": 0.99,
  "reputation_label": "high",
  "power_badge": true,
  "follower_count": 180000,
  "active_on_farcaster": true,
  "summary": "@dwr is a high-reputation Farcaster user with 180,000 followers. Power badge holder.",
  "recent_casts": [{ "text": "...", "reactions": 412, "replies": 89 }],
  "verified_addresses": ["0x..."]
}

GET /api/trending

Trending topics + top casts, structured for agent consumption. $0.010 USDC / query

GET /api/trending?window=6h

window: 1h | 6h | 24h

GET /api/channel

Channel intelligence — top casters, trending topics, engagement metrics. $0.015 USDC / query

# Request

GET /api/channel?name=base

# Response

{
  "channel_id": "base",
  "cast_count_sampled": 25,
  "top_casters": [{ "username": "jessepollak", "total_reactions": 412 }],
  "topics": ["onchain", "buildathon", "wallet"],
  "avg_engagement": 18.4,
  "top_cast": { "text": "...", "author": "jessepollak", "reactions": 412 },
  "summary": "In /base: top caster is @jessepollak with 412 reactions..."
}

How agents pay (x402)

Any x402-compatible agent pays automatically. USDC lands on Base.

import { wrapFetchWithPayment } from "x402-fetch";

const fetch402 = wrapFetchWithPayment(fetch, wallet);

// Agent pays $0.005 USDC automatically, gets back structured JSON
const res = await fetch402("https://farcaster-intel.vercel.app/api/user?username=dwr");
const intel = await res.json();

console.log(intel.summary);
// "@dwr is a high-reputation Farcaster user with 180,000 followers."