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

bash

# 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:

config.json

{

  "mcpServers": {

    "regennexus": {

      "command": "regennexus-mcp"

    }

  }

}

2. Use with Claude

Once configured, Claude can control hardware:

Code

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:

bash

# 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

config.json

{

  "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.

Terminal

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).

bash

# 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.

bash

regennexus-mcp  # Auto-detects best mode

Running Standalone

bash

# Run MCP server

regennexus-mcp



# Or via Python

python -m regennexus_mcp

Architecture

Code

Claude Code (MCP Client)

        │

        ▼

regennexus-mcp (This Package)

        │

        ├── Local Mode: Direct import

        │       │

        │       ▼

        │   regennexus (UAP)

        │

        └── Remote Mode: HTTP API

                │

                ▼

            UAP Service

Development

bash

# 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