Klio

Klio is an open-source shared memory infrastructure designed to connect multiple AI agents, enabling them to synchronize knowledge and recall context across sessions and tools. It addresses the challenge of agents forgetting prior decisions, repeating work, and contradicting each other by providing a single memory layer that all agents can access. Klio is compatible with agents such as Claude, Cursor, Codex, and any agent that supports the Model Context Protocol (MCP), allowing information learned by one agent to be immediately available to others working on the same project.

The platform records decisions, observations, notes, and plans made during agent sessions through MCP and lightweight hooks, eliminating the need for manual context transfer. Agents can use built-in verbs like recall, remember, observe, plan, decide, note, and space to interact with the shared memory. Klio supports real-time synchronization of memory across agents and machines within a project, using Redis pub/sub for communication. Memory is scoped at the project level to prevent data leakage between projects, and the system is designed to reduce drift, hallucination, and repeated mistakes by ensuring agents always have access to relevant prior context.

Klio emphasizes privacy and user control. It is local-first, running on the user's machine by default, with memory encrypted at rest under a user-owned key and every write chained with SHA-256 for auditability. No telemetry is collected, ensuring that usage data remains private. For those who prefer not to self-host, Klio Cloud offers a managed version of the memory layer, providing hosted memory, cross-agent synchronization, per-end-user memory for embedded use cases, and features like single sign-on and audit trails.

The service offers several pricing tiers: a free plan with limits on memories captured and recalls per month, a Starter plan for solo developers, a Pro plan for teams, and a Team plan for organizations, each with increasing capacity and real-time cross-agent synchronization. Klio is open source, allowing users to inspect, modify, and self-host the platform as needed.