MultiGen is an open-source AI agent platform that combines a Planner agent for goal decomposition with ReAct agents for tool-based execution. Each agent action runs inside isolated Docker sandboxes to ensure data privacy. The system natively supports A2A (Agent-to-Agent) and MCP (Model Context Protocol) protocols for multi-agent collaboration and external tool integration. Out-of-the-box capabilities include web browsing, shell command execution, and multimodal generation (images, videos, 3D models, TTS audio), slide deck creation, and report generation.