HN 보여주기: 거기 있어? Claude Code가 당신이 컴퓨터에 있는지 확인하도록 하세요

Camera-based presence detection for Claude Code. Uses your webcam to check if you're sitting at your computer. Two components: - MCP server exposes an is_user_present tool that Claude can call anytime to check if you're there - Stop hook automatically keeps Claude working when you step away, so it doesn't stop and wait for input from an empty chair Uses MediaPipe BlazeFace for fast, lightweight face detection. Works well with glasses, varied lighting, and different angles. The model (~200KB) is downloaded automatically on first run. Requires Python 3.11+ and uv. git clone https://github.com/odfalik/uthere.git cd uthere uv sync On macOS, your terminal app needs camera access. Go to System Settings > Privacy & Security > Camera and enable it for your terminal (Terminal, iTerm2, etc). Add either or both of the following to your Claude Code settings file (~/.claude/settings.json ). Gives Claude a tool it can call to check if you're at your desk. { "mcpServers": { "uthere": { "command": "uv", "args": ["--directory", "/path/to/uthere", "run", "python", "-m", "uthere.server"] } } } Prevents Claude from stopping when you're away. If Claude finishes a response and no face is detected, it gets a message telling it to keep going. A 60-second cooldown prevents infinite loops. { "hooks": { "Stop": [ { "hooks": [ { "type": "command", "command": "uv --directory /path/to/uthere run python -m uthere.hook", "timeout": 15 } ] } ] } } All configuration is through environment variables. Set them in your shell profile or in Claude Code's env settings. | Variable | Default | Description | |---|---|---| UTHERE_AWAY_MESSAGE | "No face detected. User appears to be away..." | MCP tool message when no face is detected | UTHERE_PRESENT_MESSAGE | "User is at their computer." | MCP tool message when face is detected | UTHERE_HOOK_MESSAGE | "The user is not at their computer right now..." | Message sent to the agent when the stop hook blocks | Example using Claude Code's env settings: { "env": { "UTHERE_AWAY_MESSAGE": "User is away. Send them a message on Discord.", "UTHERE_HOOK_MESSAGE": "User is AFK. Keep working, ping them on Discord if stuck." } } - Opens the webcam via OpenCV - Takes a few warmup frames (lets auto-exposure settle) - Checks 3 consecutive frames with BlazeFace face detection - Returns true if a face is found in any frame The whole check takes about 1-2 seconds. The camera is released immediately after each check. MIT