kukapay/modbus-mcp

Overview

A Model Context Protocol (MCP) server that wraps Modbus industrial communication protocols. It standardizes and contextualizes data from Modbus devices, enabling AI agents or MCP-compatible tools to read and write registers and coils. Built in Python, the server exposes Modbus operations as MCP resources and tools.

Best for

Best for
Developers building MCP-based AI assistants or automation tools for industrial environments

Use cases

• Connecting AI agents to industrial PLCs and RTUs via Modbus
• Building MCP-powered dashboards that monitor factory sensor data
• Enabling automated control loops with natural language commands over Modbus

How to use

Tools exposed

• read_register
• write_register
• read_coils
• write_coil
• read_input_registers
• read_multiple_holding_registers
• analyze_register

Tested with

Claude Desktop

Example client config

{\n   "mcpServers": {\n       "Modbus MCP Server": {\n           "command": "uv",\n           "args": [ "--directory", "/path/to/modbus-mcp", "run", "modbus-mcp" ],\n           "env": { "MODBUS_TYPE": "tcp", "MODBUS_HOST": "127.0.0.1", "MODBUS_PORT": 502 },\n       }\n   }\n}

Notes

A Model Context Protocol (MCP) server that wraps Modbus industrial communication protocols. It standardizes and contextualizes data from Modbus devices, enabling AI agents or MCP-compatible tools to read and write registers and coils. Built in Python, the server exposes Modbus operations as MCP resources and tools.

24 stars on GitHub. Last updated 2025-05-12. Licensed MIT.

Use cases

• Connecting AI agents to industrial PLCs and RTUs via Modbus
• Building MCP-powered dashboards that monitor factory sensor data
• Enabling automated control loops with natural language commands over Modbus

Pros

• Bridges industrial Modbus data directly into the MCP ecosystem
• Lightweight Python implementation, easy to extend or embed
• Reduces the complexity of parsing raw Modbus frames for AI applications

Cons

• Small community and limited documentation due to low star count
• Assumes MCP compatibility, restricting use outside that runtime
• May require additional networking configuration for large Modbus networks

Indexed from awesome-mcp-servers-punkpeye and enriched against its public facts.