Casterscan

A block explorer for Farcaster | casterscan.com

What is Casterscan?

Casterscan is a block explorer for Farcaster. It currently lets you view:

• a firehose of the latest casts, either as a list or grid
• the details of any cast(text, embeds, responses per API/Snapchain provider)

There are two goals for Casterscan's utility:

• make it easy to access Farcaster data
• give each atomic unit of data available on Snapchain its own URL

How to run locally

1. Install dependencies: bun install
2. Copy .env.example to .env.local and add your NEYNAR_API_KEY and API_URL (default http://localhost:4000)
3. Run the development server:
   • Both: bun run dev
   • Web only: bun run dev:web
   • API only: bun run dev:api

Deployment

Deploy with Vercel. Deploy the API first, then the Web (the web app needs the API URL).

API — Requires NEYNAR_API_KEY	Web — Requires API_URL

Monorepo structure

• apps/web — Casterscan Next.js app
• apps/api — Farcaster API (Express + Redis)

Have any questions/comments or want to keep up with/contribute to Casterscan?

• Message me on Farcaster
• Create an issue