APIs, hubs, indexers, and tools to build on Farcaster. Ship social apps in hours, not months.
Production-ready infrastructure so you can focus on your app, not the plumbing.
Direct access to Farcaster hubs with managed infrastructure. Read and write casts, reactions, and follows with simple REST calls.
Indexed, queryable data across the entire Farcaster network. Channels, users, casts, and engagement data in real time.
Sign In With Farcaster in minutes. Drop-in auth components for React with custody address verification built in.
Build interactive Frames with our SDK. Rich media, transactions, and multi-step flows embedded directly in the feed.
Subscribe to on-chain and off-chain events. Get notified when users cast, follow, react, or interact with your app.
Understand your users. Engagement metrics, cast performance, follower growth, and channel analytics out of the box.
Get up and running in minutes with our SDKs.
import { FarcasterClient } from '@farcaster-infra/sdk';
const fc = new FarcasterClient({ apiKey: 'your-key' });
// Fetch a user's profile and recent casts
const user = await fc.users.getByUsername('dwr.eth');
const casts = await fc.casts.getByFid(user.fid, { limit: 25 });
// Post a cast
await fc.casts.publish({
text: 'Hello from Farcaster Infra!',
embeds: [{ url: 'https://example.com' }]
});Start free, scale as you grow.
Get your API key in seconds. No credit card required.