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A cute pixel companion for Claude Code sessions.

// repository documentation

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# Clawy

Clawy is built as a cute pixel companion for [Claude Code](https://docs.anthropic.com/en/docs/claude-code) sessions, a little guy that fits in your pocket that tells you what's going on, lets you approve or deny without touching your keyboard, and turns your whole session into a cozy co-op game.

> This started as a prototype I built for myself. It's rough around the edges but it works, and I'm actively improving it. Feedback welcome.

## Features

◆ 8 animated states to see what Claude is doing at a glance

◆ Approve or deny straight from the device, no need to be at your computer

★ Powered by Claude Code hooks native integration

♥ Runs on an off-the-shelf M5StickC Plus 2

◆ Works from any project, Clawy follows your sessions

★ JRPG aesthetic portrait frames, dialog boxes, scrolling quest text, particle effects and boot sequence

♥ Zero config after WiFi setup, mDNS discovery, no IPs to manage

◆ Session stats — prompts, tool calls, errors, and average response time

★ Clawy curls up to sleep after 30 seconds of inactivity

♥ No cloud, no server, just plain TCP on your local network, nothing leaves your machine

## What You Need

- **M5StickC Plus 2** (~$20) — [M5Stack store](https://shop.m5stack.com/products/m5stickc-plus2-esp32-mini-iot-development-kit)
- **Claude Code** installed and working
- **USB cable** (USB-C, data-capable)

## Quick Start

### Path A: Flash from Browser (Recommended)

1. Plug in the M5StickC Plus 2 via USB
2. Visit the [web flasher](https://clawy.lol/flash) in Chrome or Edge
3. Click **Install Clawy** and select the serial port
4. Enter your WiFi credentials on the flash page (sent directly to the device over USB, never leaves your computer)
5. Reboot the device after flashing (press and hold the power button, then turn it back on)
6. Install the hooks:
   ```bash
   git clone https://github.com/marcvermeeren/clawy.git
   cd clawy
   ./install.sh
   ```
7. Start a session:
   ```bash
   clawy
   # or: CLAWY=1 claude
   ```

### Path B: Build from Source

1. Clone the repo:
   ```bash
   git clone https://github.com/marcvermeeren/clawy.git
   cd clawy
   ```
2. (Optional) Set compile-time WiFi credentials:
   ```bash
   cp firmware/clawy/secrets_example.h firmware/clawy/secrets.h
   # Edit secrets.h with your WiFi SSID and password
   ```
3. Compile and upload:
   ```bash
   arduino-cli compile -b m5stack:esp32:m5stack_stickc_plus2 firmware/clawy/
   arduino-cli upload -b m5stack:esp32:m5stack_stickc_plus2 -p /dev/cu.usbserial-* firmware/clawy/
   ```
4. Install hooks:
   ```bash
   ./install.sh
   ```
5. Start a session:
   ```bash
   clawy
   ```

## How It Works

Clawy uses Claude Code [hooks](https://docs.anthropic.com/en/docs/claude-code/hooks) to track session state. When Claude thinks, runs tools, finishes, or needs input, the hook scripts send status updates over WiFi to the device.

The device advertises itself as `clawy.local` via mDNS. No IP configuration needed.

### States

| Status | Display | Trigger |
|--------|---------|---------|
| READY | Idle with twinkling stars | Boot / session start |
| WORKING | Thinking with flowing waves | User sends a prompt |
| TOOL | Running with speed lines | Claude uses a tool (Read, Edit, Bash, etc.) |
| DONE | Jumping with confetti | Claude finishes responding |
| INPUT | Curious with pulsing glow | Claude asks a question |
| APPROVE | Alert with action lines | Claude needs permission |
| ERROR | Dizzy with screen shake | A tool call fails |
| SLEEPING | Curled up with fireflies | 30s idle |

### Physical Buttons

- **Button A**: Approve permission requests, skip boot animation
- **Button B**: Deny permission requests, toggle stats screen
- **Button B (long press)**: Enter demo mode
- **Button A + B (hold during boot)**: Reset WiFi credentials

## WiFi Setup

If you flashed via the [web flasher](https://clawy.lol/flash), enter your WiFi credentials on the setup page after flashing. If you built from source, either add credentials to `secrets.h` or the device will enter provisioning mode on first boot.

To reset WiFi, hold both buttons (A + B) during boot.

## Uninstall

```bash
./uninstall.sh
```

This removes the hooks from Claude Code settings and deletes `~/.clawy/`. If you added the `clawy` function to your shell profile, remove that line manually.

## Project Structure

```
clawy/
├── firmware/clawy/     Arduino sketch (M5StickC Plus 2)
├── hooks/              Claude Code hook scripts
├── assets/             Sprite exports and assets
├── install.sh          Hook installer
└── uninstall.sh        Hook uninstaller
```

## Roadmap

**Planned fixes:**
- Approval port authentication (shared secret token)
- Dependency checks in install/hook scripts
- WiFi provisioning colon-in-SSID fix

**Future:**
- Multi-session support (multiple Claude sessions, multiple devices)
- Sound effects via buzzer (approve alert, done chime, error buzz)
- OTA firmware updates from browser (no USB needed)
- Clawy levels up, lifetime stats unlock new animations
- Custom color themes and sprite sets
- Session history persisted across reboots
- Configurable audio notifications (walk away, hear when it needs you)
- Diagnostic script to test connectivity and verify hooks
- Device settings menu via button combo (brightness, WiFi, version)
- Voice input via built-in mic (hold to talk, local Whisper transcription)

## Security

Clawy communicates over plaintext TCP on your local network. The approval port (7801) — used for approving/denying Claude Code permission requests via the physical buttons — has no authentication. Anyone on the same network could send an approval response.

**Use Clawy on trusted networks only.** Token-based auth for the approval port is planned for a future release.

## Requirements

- **Device**: M5StickC Plus 2 (ESP32-PICO, 135x240 TFT, WiFi)
- **Build tools** (Path B only): Arduino CLI with `m5stack:esp32` core, M5Unified + M5GFX libraries
- **OS**: macOS or Linux (hooks use bash + python3)

## License

MIT

clawy

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