Claude Brain

Claude Brain is a free, open source plugin from Memvid that gives Claude Code persistent memory across sessions. It captures session context, decisions, bugs and their fixes into a single memory file stored in the project's .claude folder, injects relevant context automatically at the start of each session, and makes the history searchable. There is no database, cloud service or API key involved; everything stays on the developer's machine. It is aimed at developers who find themselves re explaining earlier work to Claude Code every session. Once installed from the plugin marketplace, commands let a user view memory statistics, search past context, ask the memory why a decision was made and list recent activity, or simply ask in natural language. Because the memory is one portable file, it can be committed to version control, copied to another machine or shared with a teammate for onboarding. An optional Memvid command line tool gives direct access to the same file for search, questions and a timeline view. Claude Brain is MIT licensed and costs nothing. It is built on Memvid's single file memory engine, which combines BM25 lexical and vector search with an embedded write ahead log and a timeline index. Memvid's commercial offering is a separate enterprise knowledge platform for search, agents and workflow automation, sold through a demo and contact form with no published price. The listed website is Memvid's company site rather than a dedicated page for the plugin; installation and documentation live in the project's GitHub repository.