CLEO is an agent-first orchestration framework that gives AI agents structure, persistent memory, and a lifecycle that survives interruptions. It provides a core SDK for tasks, sessions, memory, orchestration and lifecycle management, a long-running runtime layer (polling, SSE, heartbeat), a central provider registry for managing agent packages, and CLI and batteries-included distributions for developer workflows. CLEO's value is enabling coordinated, long-horizon workflows across multiple AI providers and agents, preserving context between sessions and automating the busywork of multi-agent projects.