Second Brain

Second Brain gives your AI tools persistent memory across sessions. Built on Cloudflare Workers, D1, Vectorize, and Workers AI – all on the free tier. Connect to Claude, ChatGPT, Cursor, Windsurf, or any MCP-compatible client in minutes. Features: semantic search with time-decay reranking, contradiction detection, tag-based recall, importance scoring, LLM-synthesized insights, and OAuth on the MCP endpoint. Your data lives in your own Cloudflare account – zero vendor lock-in. Integrations: Obsidian plugin (in the community directory), CLI (npm), Chrome extension, iOS Shortcuts, and a Web UI…