Initial commit: Claude Code Monitor v1.0.0
Complete real-time monitoring dashboard for Claude Code Features: - FastAPI backend with REST API and WebSocket - React + TypeScript frontend with dark theme - SQLite database for event storage - 6 hook scripts for Claude Code events - Docker deployment setup - Real-time event tracking and statistics - Event filtering (ALL, TOOLS, AGENTS, PROMPTS, SESSIONS) - Connection status indicator - Reset stats functionality Tech Stack: - Backend: Python 3.11, FastAPI, SQLAlchemy, WebSockets - Frontend: React 18, TypeScript, Vite - Database: SQLite - Deployment: Docker, Docker Compose 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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felix.zoesch
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README.md
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README.md
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# Claude Code Monitor
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Real-time monitoring dashboard for Claude Code activity. Track tool usage, agent spawns, sessions, and events with a beautiful dark-themed web interface.
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## Features
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- **Real-time Event Tracking**: Monitor Claude Code events as they happen via WebSocket
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- **Statistics Dashboard**: Track total events, tools used, agents spawned, and sessions
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- **Event Filtering**: Filter events by category (ALL, TOOLS, AGENTS, PROMPTS, SESSIONS)
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- **Dark Theme UI**: Beautiful dark-themed interface optimized for developers
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- **Docker Deployment**: Easy deployment with Docker Compose
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- **Non-intrusive Monitoring**: Lightweight hooks that don't slow down Claude Code
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## Architecture
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```
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Claude Code → Hook Scripts → FastAPI Backend → WebSocket → React Frontend
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↓
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SQLite DB
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```
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## Prerequisites
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- **Docker & Docker Compose** (recommended)
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- **jq** (for hook scripts): `brew install jq` (macOS) or `apt-get install jq` (Linux)
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- **Claude Code** installed and configured
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## Quick Start
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### 1. Clone or Download
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```bash
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cd /path/to/claude-monitor
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```
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### 2. Install Hooks
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The hook scripts capture Claude Code events and send them to the backend.
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```bash
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./install_hooks.sh
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```
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This will:
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- Copy hook scripts to `~/.claude/hooks/`
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- Display the configuration you need to add to `~/.claude/settings.json`
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### 3. Configure Claude Code
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Add the following to your `~/.claude/settings.json`:
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```json
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{
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"hooks": {
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"PreToolUse": [{
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"matcher": "*",
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"hooks": [{
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"type": "command",
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"command": "/Users/YOUR_USERNAME/.claude/hooks/pre_tool_use.sh"
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}]
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}],
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"PostToolUse": [{
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"matcher": "*",
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"hooks": [{
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"type": "command",
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"command": "/Users/YOUR_USERNAME/.claude/hooks/post_tool_use.sh"
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}]
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}],
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"SessionStart": [{
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"hooks": [{
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"type": "command",
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"command": "/Users/YOUR_USERNAME/.claude/hooks/session_start.sh"
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}]
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}],
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"SessionEnd": [{
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"hooks": [{
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"type": "command",
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"command": "/Users/YOUR_USERNAME/.claude/hooks/session_end.sh"
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}]
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}],
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"SubagentStop": [{
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"hooks": [{
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"type": "command",
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"command": "/Users/YOUR_USERNAME/.claude/hooks/subagent_stop.sh"
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}]
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}],
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"UserPromptSubmit": [{
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"hooks": [{
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"type": "command",
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"command": "/Users/YOUR_USERNAME/.claude/hooks/user_prompt.sh"
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}]
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}]
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}
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}
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```
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**Important**: Replace `/Users/YOUR_USERNAME` with your actual home directory path.
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### 4. Start the Application
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```bash
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docker-compose up --build
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```
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This will:
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- Build and start the FastAPI backend (port 8000)
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- Build and start the React frontend (port 3000)
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- Create a persistent SQLite database in `./data/`
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### 5. Open the Dashboard
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Navigate to [http://localhost:3000](http://localhost:3000)
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You should see:
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- Connection status indicator (green = connected)
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- Statistics cards showing 0 events initially
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- Empty event feed
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### 6. Test It
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Open a new terminal and use Claude Code:
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```bash
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claude
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```
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Start a conversation or run commands. You'll see events appear in the dashboard in real-time!
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## Development Setup
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### Backend (FastAPI)
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```bash
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cd backend
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# Create virtual environment
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python -m venv venv
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source venv/bin/activate # On Windows: venv\Scripts\activate
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# Install dependencies
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pip install -r requirements.txt
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# Run development server
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python -m app.main
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```
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Backend runs on [http://localhost:8000](http://localhost:8000)
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API documentation: [http://localhost:8000/docs](http://localhost:8000/docs)
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### Frontend (React + Vite)
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```bash
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cd frontend
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# Install dependencies
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npm install
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# Run development server
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npm run dev
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```
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Frontend runs on [http://localhost:5173](http://localhost:5173)
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## API Endpoints
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### Events
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- `POST /api/events` - Create new event (called by hooks)
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- `GET /api/events` - List events with filtering
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- Query params: `skip`, `limit`, `event_type`, `session_id`, `tool_name`
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- `DELETE /api/events/reset` - Reset all statistics
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### Statistics
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- `GET /api/statistics` - Get current statistics
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- `GET /api/statistics/tools` - Get tool usage breakdown
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- `GET /api/statistics/sessions` - Get session list
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### WebSocket
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- `WS /ws` - WebSocket connection for real-time updates
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### Health
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- `GET /health` - Health check
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## Event Types
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The monitor captures these Claude Code events:
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| Event Type | Description | Filter |
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|------------|-------------|--------|
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| `PreToolUse` | Before tool execution | TOOLS |
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| `PostToolUse` | After tool execution | TOOLS |
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| `SessionStart` | Session started | SESSIONS |
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| `SessionEnd` | Session ended | SESSIONS |
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| `SubagentStop` | Agent completed | AGENTS |
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| `UserPromptSubmit` | User submitted prompt | PROMPTS |
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## Configuration
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### Environment Variables
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Backend (`docker-compose.yml`):
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- `DATABASE_URL` - SQLite database path
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- `CORS_ORIGINS` - Allowed CORS origins
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Frontend (`frontend/.env`):
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- `VITE_API_URL` - Backend API URL (default: http://localhost:8000)
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- `VITE_WS_URL` - WebSocket URL (default: ws://localhost:8000/ws)
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## Troubleshooting
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### Hooks Not Working
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**Problem**: Events not appearing in dashboard
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**Solutions**:
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1. Check hook scripts are executable:
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```bash
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chmod +x ~/.claude/hooks/*.sh
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```
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2. Verify `jq` is installed:
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```bash
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which jq
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```
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3. Test hook manually:
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```bash
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echo '{"session_id":"test","tool_name":"Bash"}' | ~/.claude/hooks/post_tool_use.sh
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```
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4. Check backend logs:
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```bash
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docker-compose logs backend
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```
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### Backend Connection Issues
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**Problem**: "DISCONNECTED" status in dashboard
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**Solutions**:
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1. Verify backend is running:
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```bash
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curl http://localhost:8000/health
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```
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2. Check Docker containers:
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```bash
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docker-compose ps
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```
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3. Restart services:
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```bash
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docker-compose restart
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```
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### Port Conflicts
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**Problem**: Ports 8000 or 3000 already in use
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**Solutions**:
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1. Find process using port:
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```bash
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lsof -i :8000
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lsof -i :3000
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```
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2. Kill the process or change ports in `docker-compose.yml`:
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```yaml
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ports:
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- "8001:8000" # Backend
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- "3001:80" # Frontend
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```
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### Database Issues
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**Problem**: Database errors or corruption
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**Solutions**:
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1. Stop containers:
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```bash
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docker-compose down
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```
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2. Remove database:
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```bash
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rm data/claude_monitor.db*
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```
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3. Restart:
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```bash
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docker-compose up -d
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```
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## Project Structure
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```
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claude-monitor/
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├── backend/
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│ ├── app/
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│ │ ├── main.py # FastAPI application
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│ │ ├── database.py # SQLAlchemy models
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│ │ ├── schemas.py # Pydantic schemas
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│ │ ├── crud.py # Database operations
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│ │ ├── websocket.py # WebSocket manager
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│ │ └── api/
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│ │ ├── events.py # Event endpoints
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│ │ ├── statistics.py # Statistics endpoints
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│ │ └── websocket_endpoint.py
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│ ├── requirements.txt
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│ └── Dockerfile
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├── frontend/
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│ ├── src/
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│ │ ├── App.tsx # Main component
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│ │ ├── components/ # React components
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│ │ ├── hooks/ # Custom hooks
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│ │ ├── api/ # API clients
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│ │ ├── types/ # TypeScript types
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│ │ └── styles/ # CSS styles
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│ ├── package.json
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│ ├── vite.config.ts
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│ └── Dockerfile
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├── .claude/
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│ └── hooks/ # Hook scripts
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├── data/ # SQLite database (created on first run)
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├── docker-compose.yml
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├── install_hooks.sh
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└── README.md
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```
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## Performance
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The monitor is designed to be lightweight and non-intrusive:
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- **Hook execution**: <10ms (runs in background)
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- **Backend processing**: <50ms per event
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- **WebSocket latency**: <100ms
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- **Database size**: ~1KB per event
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For high-volume usage, events auto-delete after 10,000 entries (configurable).
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## Security
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- Hooks run with your user permissions
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- Backend only accepts localhost connections by default
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- No authentication required (localhost only)
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- For production: Add authentication and restrict CORS origins
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## Contributing
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Contributions welcome! Areas for improvement:
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- [ ] Agents Graph visualization
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- [ ] Event search functionality
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- [ ] Export events to CSV/JSON
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- [ ] Session timeline view
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- [ ] Advanced filtering
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- [ ] Performance metrics
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- [ ] Authentication system
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## License
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MIT License - feel free to use and modify
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## Credits
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Built with:
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- [FastAPI](https://fastapi.tiangolo.com/) - Backend framework
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- [React](https://react.dev/) - Frontend framework
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- [Vite](https://vitejs.dev/) - Build tool
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- [SQLAlchemy](https://www.sqlalchemy.org/) - Database ORM
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Inspired by Claude Code's powerful hook system.
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## Support
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For issues or questions:
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1. Check the troubleshooting section above
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2. Review Claude Code documentation: https://code.claude.com/docs
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3. Open an issue in this repository
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## Changelog
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### v1.0.0 (2025-12-15)
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- Initial release
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- Real-time event monitoring
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- Statistics dashboard
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- Event filtering
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- Docker deployment
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- Dark theme UI
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