OPC UA

by kukapay

2 stars

474 downloads

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GitHub

About

Integrates with OPC UA industrial automation systems to enable reading and writing node values for monitoring and controlling connected devices

Details

Author: kukapay
Repository: kukapay/opcua-mcp
GitHub stars: 2
Downloads: 474
License: MIT License
Categories: Productivity, Design, Developer Tools, AI, Frontend, Infrastructure, Other

- 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.

Setting up with Highlight

This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:

Download and install Highlight from highlightai.com/download
Navigate to the plugins tab and select "Add Custom Plugin"
Configure the plugin with the settings below
Plugin Name OPC UA

Command (node, npx, python, etc.) python
Arguments
- Argument 1 path/to/opcua_mcp/main.py
Environment
- OPCUA_SERVER_URL your-opc-ua-server-url
Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.
Enable "Start Automatically" if you want the plugin to start when Highlight launches

Setting up with Cursor

Open Cursor's settings
Navigate to the MCP section
Click "Add new Global MCP server"
Copy and paste the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "opc ua": {
            "env": {
                "OPCUA_SERVER_URL": "your-opc-ua-server-url"
            },
            "args": [
                "path/to/opcua_mcp/main.py"
            ],
            "command": "python"
        }
    }
}

JSON

{
    "mcpServers": {
        "opc ua": {
            "env": {
                "OPCUA_SERVER_URL": "your-opc-ua-server-url"
            },
            "args": [
                "path/to/opcua_mcp/main.py"
            ],
            "command": "python"
        }
    }
}

JSON

{
    "mcpServers": {
        "opc ua": {
            "env": {
                "OPCUA_SERVER_URL": "your-opc-ua-server-url"
            },
            "args": [
                "path/to/opcua_mcp/main.py"
            ],
            "command": "python"
        }
    }
}

Setting up with Claude Desktop

Open Claude Desktop's settings
Go to the Integrations tab
Click "Add MCP Server"
Use the configuration below based on your operating system

Note: Make sure Claude Desktop is running before attempting to connect.

JSON

{
    "mcpServers": {
        "opc ua": {
            "env": {
                "OPCUA_SERVER_URL": "your-opc-ua-server-url"
            },
            "args": [
                "path/to/opcua_mcp/main.py"
            ],
            "command": "python"
        }
    }
}

JSON

{
    "mcpServers": {
        "opc ua": {
            "env": {
                "OPCUA_SERVER_URL": "your-opc-ua-server-url"
            },
            "args": [
                "path/to/opcua_mcp/main.py"
            ],
            "command": "python"
        }
    }
}

JSON

{
    "mcpServers": {
        "opc ua": {
            "env": {
                "OPCUA_SERVER_URL": "your-opc-ua-server-url"
            },
            "args": [
                "path/to/opcua_mcp/main.py"
            ],
            "command": "python"
        }
    }
}

Setting up with Windsurf

Open Windsurf's preferences
Go to the Integrations section
Click "Add MCP Integration"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "opc ua": {
            "env": {
                "OPCUA_SERVER_URL": "your-opc-ua-server-url"
            },
            "args": [
                "path/to/opcua_mcp/main.py"
            ],
            "command": "python"
        }
    }
}

JSON

{
    "mcpServers": {
        "opc ua": {
            "env": {
                "OPCUA_SERVER_URL": "your-opc-ua-server-url"
            },
            "args": [
                "path/to/opcua_mcp/main.py"
            ],
            "command": "python"
        }
    }
}

JSON

{
    "mcpServers": {
        "opc ua": {
            "env": {
                "OPCUA_SERVER_URL": "your-opc-ua-server-url"
            },
            "args": [
                "path/to/opcua_mcp/main.py"
            ],
            "command": "python"
        }
    }
}

Setting up with Cline

Open Cline's settings
Navigate to the Integrations section
Click "Add MCP Server"
Copy and paste the configuration below based on your operating system

Note: Make sure to restart Cline after adding the configuration.

JSON

{
    "mcpServers": {
        "opc ua": {
            "env": {
                "OPCUA_SERVER_URL": "your-opc-ua-server-url"
            },
            "args": [
                "path/to/opcua_mcp/main.py"
            ],
            "command": "python"
        }
    }
}

JSON

{
    "mcpServers": {
        "opc ua": {
            "env": {
                "OPCUA_SERVER_URL": "your-opc-ua-server-url"
            },
            "args": [
                "path/to/opcua_mcp/main.py"
            ],
            "command": "python"
        }
    }
}

JSON

{
    "mcpServers": {
        "opc ua": {
            "env": {
                "OPCUA_SERVER_URL": "your-opc-ua-server-url"
            },
            "args": [
                "path/to/opcua_mcp/main.py"
            ],
            "command": "python"
        }
    }
}

Setting up with Goose

Open Goose's preferences
Go to the Integrations tab
Select "MCP Servers"
Click "Add New Server"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "opc ua": {
            "env": {
                "OPCUA_SERVER_URL": "your-opc-ua-server-url"
            },
            "args": [
                "path/to/opcua_mcp/main.py"
            ],
            "command": "python"
        }
    }
}

JSON

{
    "mcpServers": {
        "opc ua": {
            "env": {
                "OPCUA_SERVER_URL": "your-opc-ua-server-url"
            },
            "args": [
                "path/to/opcua_mcp/main.py"
            ],
            "command": "python"
        }
    }
}

JSON

{
    "mcpServers": {
        "opc ua": {
            "env": {
                "OPCUA_SERVER_URL": "your-opc-ua-server-url"
            },
            "args": [
                "path/to/opcua_mcp/main.py"
            ],
            "command": "python"
        }
    }
}

From the repository

Clone the repository and install the required Python packages:

git clone https://github.com/kukapay/opcua-mcp.git
cd opcua-mcp
pip install mcp[cli] opcua cryptography

{
 "mcpServers": {
   "opcua-mcp": {
     "command": "python",
     "args": ["path/to/opcua_mcp/main.py"],
     "env": {
        "OPCUA_SERVER_URL": "your-opc-ua-server-url"
     }
   }
 }
}

`read_opcua_node`

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.

`write_opcua_node`

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.

`Browse nodes`

Request to list all OPC UA 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.

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.

Claude Desktop / Cursor

Paste into your MCP client config file to install this server.

{
    "mcpServers": {
        "opc ua": {
            "env": {
                "OPCUA_SERVER_URL": "your-opc-ua-server-url"
            },
            "args": [
                "path/to/opcua_mcp/main.py"
            ],
            "command": "python"
        }
    }
}

Linux

{
    "env": {
        "OPCUA_SERVER_URL": "your-opc-ua-server-url"
    },
    "args": [
        "path/to/opcua_mcp/main.py"
    ],
    "command": "python"
}

Macos

{
    "env": {
        "OPCUA_SERVER_URL": "your-opc-ua-server-url"
    },
    "args": [
        "path/to/opcua_mcp/main.py"
    ],
    "command": "python"
}

Windows

{
    "env": {
        "OPCUA_SERVER_URL": "your-opc-ua-server-url"
    },
    "args": [
        "path/to/opcua_mcp/main.py"
    ],
    "command": "python"
}

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.

GitHub License

Features

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").

- 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.

Example Prompts

- "What’s the value of node ns=2;i=2?" → Returns the current value.
- "Set node ns=2;i=3 to 100." → Writes 100 to the node.

Installation

Prerequisites

- Python 3.13 or higher - An OPC UA server (e.g., a simulator or real industrial device)

Install Dependencies

Clone the repository and install the required Python packages:

git clone https://github.com/kukapay/opcua-mcp.git
cd opcua-mcp
pip install mcp[cli] opcua cryptography

MCP Client Configuration

{
 "mcpServers": {
   "opcua-mcp": {
     "command": "python",
     "args": ["path/to/opcua_mcp/main.py"],
     "env": {
        "OPCUA_SERVER_URL": "your-opc-ua-server-url"
     }
   }
 }
}

License

This project is licensed under the MIT License. See the LICENSE file for details.

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Details

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Setting up with Highlight

From the repository

read_opcua_node

write_opcua_node

Browse nodes

Read multiple OPC UA Nodes

Write to multiple OPC UA Nodes

Claude Desktop / Cursor

Linux

Macos

Windows

OPC UA MCP Server

Features

Tools

Example Prompts

Installation

Prerequisites

Install Dependencies

MCP Client Configuration

License

Install

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`read_opcua_node`

`write_opcua_node`

`Browse nodes`

`Read multiple OPC UA Nodes`

`Write to multiple OPC UA Nodes`