Personal knowledge base with semantic search for Claude — local PostgreSQL + pgvector, MCP server for Claude Code CLI and Claude Desktop. Inspired by Nate B Jones's Open Brain guide (promptkit.natebjones.com)
Latest release v2.4.0 — v2.4.0 — collapse capture+relate to one MCP call · 11 May 2026
1 file for Claude Code: mybrain CLAUDE.md — 1,487 tokens loaded in every session.
CLAUDE.md A 1,487 tok These files are robertsfeir/mybrain's own configuration — they tell Claude Code how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.