Cellium Agent is a lightweight Python AI agent framework for building autonomous agents with adaptive decision-making. It uses a local-first, minimal architecture instead of heavy external dependencies or complex abstractions, making it easy to understand and extend. Key features: - Adaptive decision loop (Plan-Execute-Observe-Replan) - Bayesian bandit-based strategy optimization - Three-layer memory (persona, session, long-term) - Event-driven microkernel design - No required vector database