kukapay/opcua-mcp

OPC UA MCP Server

An MCP server that connects to OPC UA-enabled industrial systems, allowing AI agents to monitor, analyze, and control operational data in real time.

This project is ideal for developers and engineers looking to bridge AI-driven workflows with industrial automation systems.

Features

• Read OPC UA Nodes: Retrieve real-time values from industrial devices.
• Write to OPC UA Nodes: Control devices by writing values to specified nodes.
• Browse nodes: Request to list allopcua nodes
• Read multiple OPC UA Nodes: Retrieve multiple real-time values from devices.
• Write to multiple OPC UA Nodes: Control devices by writing values to multiple nodes.
• Seamless Integration: Works with MCP clients like Claude Desktop for natural language interaction.

Tools

The server exposes five tools:

• read_opcua_node:

  • Description: Read the value of a specific OPC UA node.
  • Parameters:
    • node_id (str): OPC UA node ID (e.g., ns=2;i=2).
  • Returns: A string with the node ID and its value (e.g., "Node ns=2;i=2 value: 42").

• write_opcua_node:

  • Description: Write a value to a specific OPC UA node.
  • Parameters:
    • node_id (str): OPC UA node ID (e.g., ns=2;i=3).
    • value (str): Value to write (converted based on node type).
  • Returns: A success or error message (e.g., "Successfully wrote 100 to node ns=2;i=3").

• Browse nodes:

  • Description: Read the value of a specific OPC UA node.

• Read multiple OPC UA Nodes:

  • Description: Read the value of a specific OPC UA node.

• Write to multiple OPC UA Nodes:

  • Description: Read the value of a specific OPC UA node.