Second Brain
Self-hosted AI memory layer. Works with Claude, ChatGPT, Cursor.
Second Brain is a self-hosted memory layer that gives Claude, ChatGPT, Cursor, and any MCP-compatible AI client persistent memory across sessions.
Store notes, decisions, and context once. Recall them by meaning not keywords using semantic vector search. Includes a web UI for browsing and managing memories, an Obsidian plugin for syncing your vault, and capture tools for browser and iOS.
Built on Cloudflare Workers, D1, Vectorize, and Workers AI.