Hi friend 👋

From Solana support, new Kafka filters to a smarter Neynar score — the Neynar team has been busy helping you build even better apps and experiences on Farcaster. Let's dive in.

💻 New features to help you build better mini apps to cast search, frame and user discovery

1. Solana Support in Mini Apps

The mini app starter kit template now has native Solana support right out of the box — and it's easier than ever to add features like "who holds this token in your network?"

→ Mini app starter kit

→ Tutorial: Relevant Holders for Coins

2. Convert existing web apps to mini apps

If you already have a web app, no need to go back to the drawing board. See here on how to easily convert it into a Farcaster mini app.

→ Tutorial

3. Personalized Embed Images for Mini Apps

Getting users to share your mini app is one of the key ways to make it go viral. Users are much more likely to share when you give them a personalized sharable embed. You can now generate them per user — just add /share/[fid] to your mini app URL.

→ Starter Kit

4. Send targeted notifications to mini app users (without writing code)

Send personalized notifications to users who follow another user or are in a specific location or have a minimum user score. Send them over API or directly through the dev portal UI.

→ API

→ Tutorial

🌊 Stream Farcaster data easier and wider language support

1. Kafka Streaming Filters

Now you can subscribe to exactly the Farcaster events you care about — users, casts, reactions, follows, signers — with our new Kafka topic filters. Compared to raw hub events, this returns fully hydrated objects in a real time stream so developers can directly use it in their applications.

→ Node example for Kafka consumer

→ Tutorial

2. Neynar Rust & Go SDKs

Building in Rust or Go? You can now use official Neynar SDKs — no need to hand-roll API calls.

→ Go SDK

→ Rust SDK

🤖 Filter for better quality

1. Updated Neynar Score Algorithm

Our scoring now better reflects real engagement:

• Mini app usage is scored properly

• AI-generated "slop" is more effectively caught

• Sneaky gaming behaviors are detected

→ Blog post

🚀 Ready to build?

Neynar is free to get started — spin up your first mini app, subscribe to filtered data streams, or explore what's possible with crypto-first APIs today.

👉 Start building with Neynar

See you on Farcaster 🪐