生産性
obsidian-second-brain
Persistent memory for Claude Code and other CLI agents, stored as plain Markdown in your Obsidian vault
★ 4.7k スターMIT
ガイドを見る →OB1は、NateBJones-Projectsが公開しているオープンソースの生産性プロジェクトです（GitHub: NateBJones-Projects/OB1）。GitHubスターは4,701、フォークは893で、NOASSERTIONライセンスの下で公開されています。GitHubでの最終更新は2026年10月8日です。
Open Brain (OB1): one database, one AI gateway, one capture channel — shared memory for every AI you use
Read the overview: one database, one AI gateway, one chat channel, and an MCP server that any AI can plug into.
Clone the repo and build the full system with the Setup Guide (or the AI-assisted setup with Cursor/Claude Code) — database, gateway, Slack capture, and MCP server.
Attach Claude, ChatGPT, Cursor, or Claude Code to the same brain via the remote MCP connection.
Start capturing thoughts through Slack, then build Extension 1 (Household Knowledge Base) and import old data with Recipes.
A single database with vector search that every connected AI reads and writes, instead of per-tool memory silos.
Capture thoughts where you already chat; companion prompts help build the capture habit and migrate existing memories.
Any MCP-capable client can connect, and a Shared MCP Server primitive lets you give others scoped access to parts of your brain.
A learning path that builds a household knowledge base, maintenance tracker, family calendar, meal planner, professional CRM, and job-hunt pipeline.
Community-reviewed recipes import ChatGPT, Perplexity, Obsidian, X/Twitter, Instagram, Google Takeout, Grok, and email history with parsing, deduplication, and embedding included.
Community SvelteKit and Next.js dashboards point at your Supabase backend, and a Kubernetes recipe offers a fully self-hosted deployment with PostgreSQL + pgvector, no Supabase required.
Clone the project and enter its directory.
git clone https://github.com/NateBJones-Projects/OB1.git
cd OB1Build the full system — database, AI gateway, Slack capture, MCP server — using the repo's Setup Guide (about 45 minutes per the README).
# see the Setup Guide linked from the README for the exact stepsUse the Remote MCP Connection primitive in the repo docs to connect Claude Desktop, ChatGPT, Claude Code, or Cursor to your brain.
# see the 'Remote MCP Connection' primitive doc in the repoNate B. Jones created Open Brain; a maintainer team reviews and merges a large volume of community Extensions, Recipes, skills, and dashboards.
The repository is open (license not asserted in its metadata). The reference setup runs on Supabase and an AI gateway, so you may pay for those services' tiers and your own model usage.
You will need accounts/keys for the pieces you assemble — typically Supabase plus an LLM provider for the gateway and embeddings — as detailed in the Setup Guide.
Those are apps for humans; OB1 is infrastructure — a database with vector search and an open MCP protocol whose purpose is that every AI you use shares one persistent memory. (There is even a Recipe to import an Obsidian vault into it.)
Clone the repo and follow the Setup Guide (or the AI-Assisted Setup), then connect your first AI client over MCP and pick Extension 1.
Persistent memory for Claude Code and other CLI agents, stored as plain Markdown in your Obsidian vault
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LibreAIカタログに掲載された生産性プロジェクトの中で最もスターの多いもの — OB1が合わなかった場合に検討したい、現実的な候補リストです。
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カタログの中でOB1とスター数が近い生産性プロジェクト — 前後の棚もそのまま見て回れます。
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Persistent memory for Claude Code and other CLI agents, stored as plain Markdown in your Obsidian vault
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