Devbrain

🧠 devbrain — Central AI Second Brain Hub

**Single Source of Truth (SSOT) for Multi-Agent Coding & Obsidian.**

`devbrain` connects your AI coding assistants (**Google Antigravity IDE**, **Claude Code**, **Hermes**, **OpenCode**) directly to a local **Obsidian Vault** using the **Model Context Protocol (MCP)** and high-speed **Hybrid Semantic Search** (FastEmbed CPU ONNX + Rank-BM25).

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⚡ 30-Second Quickstart

1. Install `devbrain` in Editable Development Mode

cd "E:\_PROJECT\_Central AI Brain Hub"
pip install -e .

*(Once installed, you can use the global `devbrain` command directly from any folder)*

2. Initialize or Attach Your Obsidian Vault

devbrain init E:/MyObsidianVault

*(Or via Python module directly: `python -m devbrain.cli.main init E:/MyObsidianVault`)*

*What happens under the hood:*

• Scaffolds the standard 07 Obsidian taxonomy (00_System/, 10_Projects/, 20_Knowledge/, 30_Decisions/, 90_Agent_Inbox/, 99_Daily/, .brainignore).
• Automatically registers the central-brain FastMCP server into Google Antigravity IDE (~/.gemini/antigravity/mcp_config.json) and Claude Code (~/.claude.json).

3. Verify Vault Health

devbrain status

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🧪 Development & Interactive Demo Guide

For complete copy-pasteable testing commands without global installation, check out [**`DEMO.md`**](DEMO.md).

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🤖 AI Agent FastMCP Pairing

Once initialized, your AI assistants in Antigravity IDE and Claude Code automatically gain access to 4 native memory tools:

MCP Tool	Purpose	Example Interaction
search_brain(query, limit, scope)	Semantic hybrid search across all vault notes	"Search our architectural guidelines on JWT authentication"
get_project_context(project_name)	Retrieve active project specs, backlog, and architecture from 10_Projects/	"Load context and requirements for the auth_service project"
`write_agent_log(summary, deta