RegenNexus MCP Server

MCP (Model Context Protocol) server adapter for RegenNexus UAP - enabling AI-controlled hardware.

This package exposes RegenNexus hardware capabilities as MCP tools, allowing Claude Code, Claude Desktop, and other MCP-compatible AI clients to control physical devices.

Features

• Hardware Control: GPIO, PWM, robotic arms, sensors, cameras
• Mesh Networking: Discover and communicate with nodes over LAN (UDP/WebSocket)
• Serial/I2C: Communicate with microcontrollers and sensors
• Two Connection Modes: Local (direct import) or Remote (HTTP API)
• Auto-Discovery: Automatically detects installed RegenNexus and mesh nodes
• MCP Compatible: Works with Claude, Codex, Gemini, and any MCP client

Installation

# MCP server only (for remote UAP connection)
pip install regennexus-mcp

# With local UAP support
pip install regennexus-mcp[local]

# With remote API support
pip install regennexus-mcp[remote]

# Everything
pip install regennexus-mcp[all]

Quick Start

1. Configure Claude Code

Add to your Claude Code MCP settings:

{
  "mcpServers": {
    "regennexus": {
      "command": "regennexus-mcp"
    }
  }
}

2. Use with Claude

Once configured, Claude can control hardware:

User: "List all connected devices"
Claude: [calls list_devices tool]

User: "Turn on GPIO pin 18"
Claude: [calls gpio_write with pin=18, value=1]

User: "Move the robot arm to position [0, 45, -30, 0, 60, 0, 0]"
Claude: [calls robot_arm_move with positions]

Configuration

Configure via environment variables:

# Connection mode: auto, local, or remote
REGENNEXUS_MODE=auto

# Remote mode settings
REGENNEXUS_ENDPOINT=https://your-uap-server.com
REGENNEXUS_API_KEY=your-api-key

# Local mode settings
REGENNEXUS_CONFIG=/path/to/regennexus-config.yaml

# Logging
REGENNEXUS_LOG_LEVEL=INFO

Claude Code Config with Environment

{
  "mcpServers": {
    "regennexus": {
      "command": "regennexus-mcp",
      "env": {
        "REGENNEXUS_MODE": "local",
        "REGENNEXUS_LOG_LEVEL": "DEBUG"
      }
    }
  }
}

Available Tools (Free Tier)

These tools are provided by the regennexus package (open source):

GPIO & Basic I/O

Tool	Description
gpio_write	Set a GPIO pin to HIGH (1) or LOW (0)
gpio_read	Read the current state of a GPIO pin
pwm_write	Set PWM duty cycle (0-100%) for motors, LEDs, servos

Sensors & I2C

Tool	Description
read_sensor	Read value from a sensor (temperature, humidity, etc.)
i2c_scan	Scan I2C bus for connected devices

Serial Communication

Tool	Description
serial_send	Send data over serial port (UART)
serial_read	Read data from serial port

Robotics

Tool	Description
robot_arm_move	Move a robotic arm to specified joint positions
gripper_control	Open or close a robotic gripper

Device Management

Tool	Description
list_devices	List all connected hardware devices
device_info	Get device details (CPU, memory, IP, temperature)

Camera

Tool	Description
camera_capture	Capture a single image from a camera

Mesh Network

Tool	Description
list_nodes	List all nodes in the mesh network
ping_node	Ping a node and measure network latency
send_to_node	Send a message/command to a specific node
broadcast_message	Broadcast a message to all nodes
find_by_capability	Find nodes with a specific capability

Premium tools with additional capabilities are available separately.

Connection Modes

Local Mode (Recommended)

Requires regennexus package installed on the same machine. Directly imports UAP modules for minimal latency. No API server needed.

pip install regennexus-mcp[local]
REGENNEXUS_MODE=local regennexus-mcp

This is the recommended mode for most users.

Remote Mode (Advanced)

Connects to a UAP instance running as a service via HTTP API. Requires UAP API server to be running (regen server).

# On the UAP server machine:
regen server --port 8080

# On the Claude Code machine:
pip install regennexus-mcp[remote]
REGENNEXUS_MODE=remote \
REGENNEXUS_ENDPOINT=http://uap-server:8080 \
regennexus-mcp

Auto Mode (Default)

Tries local first, falls back to remote if UAP not installed.

regennexus-mcp  # Auto-detects best mode

Running Standalone

# Run MCP server
regennexus-mcp

# Or via Python
python -m regennexus_mcp

Architecture

Claude Code (MCP Client)
        │
        ▼
regennexus-mcp (This Package)
        │
        ├── Local Mode: Direct import
        │       │
        │       ▼
        │   regennexus (UAP)
        │
        └── Remote Mode: HTTP API
                │
                ▼
            UAP Service

Development

# Clone
git clone https://github.com/regennow/regennexus-mcp
cd regennexus-mcp

# Install dev dependencies
pip install -e ".[dev]"

# Run tests
pytest

# Format code
black src/
ruff check src/

Related Projects

• RegenNexus UAP - Universal Adapter Protocol
• MCP Specification - Model Context Protocol

License

MIT License