Building a Multi-User AI Agent System: Architecture Deep-Dive (Open Source)

If you're building AI agents for production, you've probably hit these walls: Isolation: How do you run multiple users' agents without them interfering? Persistence: How do you maintain memory across sessions? Multi-channel: How do you connect to WhatsApp AND Telegram AND Slack without building three integrations? Cost control: How do you prevent one user from burning through your entire API budget? I've been working on HappyClaw, an open-source system that solves all four. Here's how the architecture works under the hood.