Second Brain is a self-hosted, persistent memory layer for AI tools like Claude, ChatGPT, and Cursor that maintains shared context across sessions by storing, synthesizing, and recalling user data on Cloudflare’s free-tier infrastructure. Unlike built-in AI memories that reset or lack transparency, Second Brain offers searchable, exportable, and conflict-resolving storage accessible through any Model Context Protocol (MCP) compatible client, enabling consistent, cross-tool continuity without repeated explanations. Its extensible ecosystem includes CLI tools, Obsidian integration, and iOS shortcuts, providing practical workflow enhancements for developers and knowledge workers.
