memoir

memoir is a tool that gives AI coding assistants a continuous memory across sessions, machines, and tools. Instead of starting fresh each time you switch between Claude, Cursor, Gemini, or other AI tools, memoir stores decisions, context, and lessons learned in files you control. Memory syncs across your devices with end-to-end encryption using keys only you hold.

Designed for developers who work with multiple AI tools and machines, memoir captures what you and your AI learn together—project goals, architectural choices, deployment rules, and resolved issues—then retrieves that context automatically in future sessions. The maker says it was built with Claude Code. It's open source under MIT, works via MCP protocol, and offers free single-machine use with optional sync and team plans.