Flipper Zero MCP Server

Modular Model Context Protocol (MCP) server for interacting with a Flipper Zero from MCP-capable clients (including Claude Desktop).

Features

• Modular architecture: functionality is provided by modules under src/flipper_mcp/modules/

• Multiple transports: USB and WiFi are implemented; Bluetooth is present as a stub transport

• Protobuf RPC support (nanopb-delimited framing) with generated protobuf code committed in src/flipper_mcp/core/protobuf_gen/

• Built-in modules:

  • systeminfo: connection/device/SD-card status

  • badusb: generate, validate, store, and execute BadUSB scripts (requires SD card for file operations)

  • music: save/play songs using Flipper Music Format (FMF) (requires SD card)

Related MCP server: flipper-mcp-bridge

Documentation

• docs/index.md: documentation hub

• docs/claude_setup.md: Claude Desktop setup (kept up to date)

• docs/wifi_dev_board.md: WiFi Dev Board setup, architecture, and protobuf RPC over WiFi

• firmware/tcp_uart_bridge/README.md: WiFi Dev Board TCP↔UART bridge firmware (“flirmware”)

• docs/modules/: built-in module documentation

• docs/core/: core server documentation

Installation

git clone https://github.com/busse/flipperzero-mcp.git
cd flipperzero-mcp

Quick start

pip install -e .
flipper-mcp

The server communicates over stdio (MCP) and will auto-discover built-in modules at startup.

Quick start with Claude Desktop (USB-only)

1. Connect your Flipper Zero via USB.

2. Add one MCP server entry to Claude Desktop config:

   • macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

   • Windows: %APPDATA%\\Claude\\claude_desktop_config.json

   • Linux: ~/.config/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "flipper-zero": {
      "command": "python3",
      "args": ["-m", "flipper_mcp.cli.main"],
      "cwd": "/path/to/flipperzero-mcp",
      "env": {
        "PYTHONUNBUFFERED": "1",
        "FLIPPER_TRANSPORT": "usb"
      }
    }
  }
}

3. Restart Claude Desktop and ask: “What tools do you have available?”

Configuration

The CLI currently uses environment variables for configuration:

• FLIPPER_TRANSPORT: auto (default), usb, wifi, bluetooth/ble

• FLIPPER_PORT: override the USB serial device path (only used for usb)

• FLIPPER_WIFI_HOST: Flipper WiFi dev board host/IP (only used for wifi)

• FLIPPER_WIFI_PORT: Flipper WiFi dev board TCP port (only used for wifi)

• FLIPPER_DEBUG: enable protobuf RPC debug logging (1, true, yes, on)

• FLIPPER_FORCE_START_RPC_SESSION: force sending start_rpc_session on connect (1, true, yes, on)

• FLIPPER_MCP_ALLOW_STUB_MODE: DEV ONLY. If enabled (1, true, yes, on), the server will run in stub mode when it cannot connect to hardware. Default: disabled.

Default behavior (recommended): one MCP config, USB-first with optional WiFi fallback

By default (FLIPPER_TRANSPORT unset), the server uses auto mode:

• It tries USB first

• If USB is not available and FLIPPER_WIFI_HOST is set, it falls back to WiFi

Examples:

# Use a specific USB port
export FLIPPER_TRANSPORT=usb
export FLIPPER_PORT=/dev/ttyACM0
flipper-mcp

# Use WiFi transport
export FLIPPER_TRANSPORT=wifi
export FLIPPER_WIFI_HOST=192.168.1.1
export FLIPPER_WIFI_PORT=8080
flipper-mcp

# Auto mode (default): try USB, fall back to WiFi if FLIPPER_WIFI_HOST is set
export FLIPPER_WIFI_HOST=192.168.1.100
export FLIPPER_WIFI_PORT=8080
flipper-mcp

Using with Claude Desktop

See docs/claude_setup.md.

Available tools (built-in)

connection (health/recovery)

• flipper_connection_health (authoritative transport + protobuf-RPC health)

• flipper_connection_reconnect (disconnect/connect, then health)

systeminfo

• systeminfo_get

badusb

• badusb_list

• badusb_read

• badusb_generate

• badusb_validate

• badusb_write

• badusb_delete

• badusb_diff

• badusb_rename

• badusb_execute (requires confirm=true)

• badusb_workflow

music

• music_get_format

• music_play

Contributing

We welcome contributions! This project is pro-AI-assisted coding and engineering - we encourage and welcome contributions that leverage AI tools like Claude Code, GitHub Copilot, ChatGPT, Cursor, or any other AI coding assistants. If you used AI assistance in your contribution, that's great! Please mention it in your pull request.

See CONTRIBUTING.md and docs/module_development.md.

License

MIT License - see LICENSE.