Second Brain for AI

In plain words

Second Brain for AI is a self-hosted memory layer that persists context across conversations with Claude, ChatGPT, Cursor, and other MCP clients. It allows users to store project details, decisions, and preferences that would normally disappear after each chat session, then retrieve them through semantic search rather than keyword matching. The tool includes duplicate detection and a web interface, runs on Cloudflare's infrastructure, offers a free tier with user-owned data, and is MIT licensed for developers who want continuous context across their AI interactions.

written from the facts on this page · September 2026

From the sources

Every AI conversation starts from zero. Your projects, decisions, and preferences disappear as soon as you close the chat. Second Brain fixes that. It is a self-hosted memory layer that works with Claude, ChatGPT, Cursor, and any MCP client. You can store context once and recall it by meaning instead of keywords. It includes duplicate detection, semantic search, and a web UI. Built on Cloudflare, it offers a free tier and your data remains yours. MIT licensed.

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