building-chat-interfaces

Build production-grade AI chat interfaces by extending ChatKitServer, implementing respond() for streaming, and configuring useChatKit on the frontend with custom fetch interceptors to inject auth headers and user context. This approach secures per-user isolation and enables httpOnly cookie proxies for Next.js.

Integrate custom agents by subclassing ChatKitServer and implementing respond() to handle streaming responses. Wire the frontend via useChatKit with a custom fetch interceptor that injects user and page context, connecting your agent logic to the chat UI seamlessly.

Yes. Inject user and page context through a custom fetch interceptor in useChatKit on the frontend, while the backend ChatKitServer handles per-user isolation. This enables secure multi-tenant deployments with privacy-preserving context propagation.

For production Next.js deployments, use an httpOnly cookie proxy to handle streaming responses securely. This pattern protects credentials, manages auth state safely, and integrates with ChatKit's backend streaming via the respond() method.

Configure JWT authentication by extending ChatKitServer with custom token validation in respond(), then inject JWT tokens through the useChatKit custom fetch interceptor on the frontend. Pair this with optional database persistence to store authenticated user sessions.