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clawdmeter-server

v0.0.1

Published

BLE host daemon for the Clawdmeter ESP32 Claude usage monitor (Node/Bun, cross-platform).

Vulnerabilities

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Links

Git

Maintainers

alexanderywalexanderyw

Keywords

Readme

clawdmeter-server

BLE host daemon for the Clawdmeter ESP32 Claude usage monitor. Polls Anthropic rate-limit headers and forwards a compact status payload over Bluetooth LE to the "Claude Controller" firmware.

Cross-platform (macOS + Linux), single Node/Bun binary.

Install

npm install -g clawdmeter-server

Requires Node ≥ 20.

Run

clawdmeter-server

The daemon will scan for the ESP32, connect, and start polling. Logs go to stdout.

Install as a background service

The package ships with a helper script that installs a user-level service (systemd on Linux, LaunchAgent on macOS):

# from the install dir, e.g. $(npm root -g)/clawdmeter-server
./service/install.sh
  • Linux: writes ~/.config/systemd/user/claude-usage-daemon.service and enables it.
  • macOS: writes ~/Library/LaunchAgents/com.user.claude-usage-daemon.plist and loads it.

Platform setup

macOS

  • On first run, macOS prompts for Bluetooth permission for the parent process (Terminal, iTerm, or launchd if running as a LaunchAgent). Approve under System Settings → Privacy & Security → Bluetooth.
  • The OAuth token is read from the Keychain entry Claude Code-credentials, with a fallback to ~/.claude/.credentials.json.

Linux

  • noble needs raw HCI socket access. Either run as root, or grant the capability to your Node binary once:

    sudo setcap cap_net_raw+eip "$(command -v node)"

  • The OAuth token is read from ~/.claude/.credentials.json.

Authentication

You need to be logged in to Claude Code on the host machine — clawdmeter-server reuses the same OAuth credentials. If claude works in your terminal, the daemon will work too.

Configuration

  • The resolved BLE address is cached at ~/.config/claude-usage-monitor/ble-address.
  • On any connection failure the cache is cleared, and the next iteration rescans by advertised name (Claude Controller).
  • No other configuration is required or supported.

Troubleshooting

| Symptom | Fix | |---|---| | noble warning: unknown peripheral | Make sure the ESP32 is powered and advertising. | | Hangs on scan (macOS) | Grant Bluetooth permission to the parent process. | | EPERM / Operation not permitted (Linux) | Run setcap (see above) or run as root. | | no token found | Run claude once to log in, or check ~/.claude/.credentials.json. |

License

MIT