Building Chat Interfaces Build production-grade AI chat interfaces with custom backend integration. Quick Start --- Core Architecture --- Backend Patterns 1. ChatKit Server with Custom Agent 2. Database Persistence 3. JWT/JWKS Authentication --- Frontend Patterns 1. Custom Fetch Interceptor 2. Page Context Extraction 3. Script Loading Detection --- Next.js Integration httpOnly Cookie Proxy When auth tokens are in httpOnly cookies (can't be read by JavaScript): Script Loading Strategy --- MCP Tool Authentication MCP protocol doesn't forward auth headers. Pass credentials via system prompt: ---…