MCP Servers

Project Brain MCP

An MCP server that reads any codebase (GitHub repo or local folder) and explains it using AI. Enables users to ask questions about project structure, key files, auth flows, and more in plain language.

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README

🧠 Project Brain MCP

An MCP server that reads any codebase and explains it using AI. Point it at any github repo url / local project folder and ask questions in plain language.

🔧 Tools

Tool	What it does
`scan_repo_structure`	Scans the folder tree + explains the project architecture
`identify_key_files`	Finds the most important files for a new developer to read
`explain_auth_flow`	Reads auth-related files and explains login, tokens, and permissions
`ask_codebase`	Answer any question grounded in the actual code

🛠️ Setup

1. Install dependencies

npm install

2. Set your API key

cp .env.example .env
# Edit .env and add your ANTHROPIC_API_KEY

3. Build

npm run build

4. Add to Claude Desktop

Edit ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):

{
  "mcpServers": {
    "project-brain": {
      "command": "node",
      "args": ["/absolute/path/to/project-brain-mcp/build/index.js"],
      "env": {
        "GEMINI_API_KEY": "sk-ant-your-key-here"
      }
    }
  }
}

Restart Claude Desktop. The 4 tools will appear automatically.

📝 Example prompts

Scan the structure of https://github.com/username/repo-name

What are the key files I should read in this repo?

Explain the auth flow in /Users/me/projects/my-api

How does payment processing work in /Users/me/projects/my-shop?

🖥️ Development

npm run dev   # watch mode (recompiles on save)
npm run build # production build

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