README.md•2.76 kB
# 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.
### 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:
```bash
git clone https://github.com/kukapay/opcua-mcp.git
cd opcua-mcp
pip install mcp[cli] opcua cryptography
```
### MCP Client Configuration
```json
{
"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](LICENSE) file for details.