Atom is a self-hosted AI agent platform built with Python and FastAPI that combines visual workflow builders with intelligent LLM-based agents. Users interact via natural language to trigger specialty agents that plan, verify, and execute complex workflows across their tech stack. The platform features a multi-agent architecture with episodic memory and a 4-tier maturity governance system (Student to Autonomous), integrating with over 46 business tools including CRM, calendar, email, and productivity platforms.