OPC-UA MCP Server

An open-source Model Context Protocol server for OPC-UA industrial automation. It enables LLMs to read and write node values with type validation, browse the address space recursively, search nodes by name using a fuzzy index, and subscribe to live data updates. It supports anonymous, username/password, or certificate authentication and includes a persistent disk cache for improved performance.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Community listingLocal stdioSource reviewed; not executedPublished by mwieczorkiewicz

Vendor documentation

What you can do with it

Read and write node values with type validation
Browse the OPC-UA address space recursively
Search nodes by browse name using fuzzy matching
Subscribe to live data updates from industrial devices

Source and maintenance

Community listingRegistry 1.0.0

mcp-registry: io.github.mwieczorkiewicz/opcua-mcp@1.0.0 Source repository Project website

Maintenance checked: Oct 31, 2026, 10:59 PM UTC

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

ghcr.io/mwieczorkiewicz/opcua-mcp:main-29734c4

oci

ghcr.io/mwieczorkiewicz/opcua-mcp:main-29734c4 package definition

{
  "transport": "stdio",
  "identifier": "ghcr.io/mwieczorkiewicz/opcua-mcp:main-29734c4",
  "registryType": "oci",
  "environmentVariables": [
    {
      "name": "OPCUA_ENDPOINT",
      "default": "opc.tcp://localhost:4840",
      "isRequired": true,
      "description": "OPC-UA server endpoint to connect to, e.g. opc.tcp://your-plc-host:4840"
    },
    {
      "name": "OPCUA_AUTH_MODE",
      "default": "anonymous",
      "description": "Authentication mode against the OPC-UA server"
    },
    {
      "name": "OPCUA_USERNAME",
      "description": "Username, required if OPCUA_AUTH_MODE=username"
    },
    {
      "name": "OPCUA_PASSWORD",
      "description": "Password, required if OPCUA_AUTH_MODE=username"
    },
    {
      "name": "OPCUA_SECURITY_POLICY",
      "default": "None",
      "description": "OPC-UA transport security policy, e.g. Basic256Sha256"
    },
    {
      "name": "OPCUA_SECURITY_MODE",
      "default": "None",
      "description": "OPC-UA transport security mode, e.g. SignAndEncrypt"
    },
    {
      "name": "SERVER_TRANSPORT",
      "default": "stdio",
      "description": "MCP transport: stdio (for local MCP clients) or http (for remote/hosted deployments)"
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "opc-ua-mcp-server": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "OPCUA_ENDPOINT=<YOUR_OPCUA_ENDPOINT>",
        "-e",
        "OPCUA_AUTH_MODE=<YOUR_OPCUA_AUTH_MODE>",
        "-e",
        "OPCUA_USERNAME=<YOUR_OPCUA_USERNAME>",
        "-e",
        "OPCUA_PASSWORD=<YOUR_OPCUA_PASSWORD>",
        "-e",
        "OPCUA_SECURITY_POLICY=<YOUR_OPCUA_SECURITY_POLICY>",
        "-e",
        "OPCUA_SECURITY_MODE=<YOUR_OPCUA_SECURITY_MODE>",
        "-e",
        "SERVER_TRANSPORT=<YOUR_SERVER_TRANSPORT>",
        "ghcr.io/mwieczorkiewicz/opcua-mcp:main-29734c4"
      ],
      "env": {
        "OPCUA_ENDPOINT": "<YOUR_OPCUA_ENDPOINT>",
        "OPCUA_AUTH_MODE": "<YOUR_OPCUA_AUTH_MODE>",
        "OPCUA_USERNAME": "<YOUR_OPCUA_USERNAME>",
        "OPCUA_PASSWORD": "<YOUR_OPCUA_PASSWORD>",
        "OPCUA_SECURITY_POLICY": "<YOUR_OPCUA_SECURITY_POLICY>",
        "OPCUA_SECURITY_MODE": "<YOUR_OPCUA_SECURITY_MODE>",
        "SERVER_TRANSPORT": "<YOUR_SERVER_TRANSPORT>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "opc-ua-mcp-server": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "OPCUA_ENDPOINT=<YOUR_OPCUA_ENDPOINT>",
        "-e",
        "OPCUA_AUTH_MODE=<YOUR_OPCUA_AUTH_MODE>",
        "-e",
        "OPCUA_USERNAME=<YOUR_OPCUA_USERNAME>",
        "-e",
        "OPCUA_PASSWORD=<YOUR_OPCUA_PASSWORD>",
        "-e",
        "OPCUA_SECURITY_POLICY=<YOUR_OPCUA_SECURITY_POLICY>",
        "-e",
        "OPCUA_SECURITY_MODE=<YOUR_OPCUA_SECURITY_MODE>",
        "-e",
        "SERVER_TRANSPORT=<YOUR_SERVER_TRANSPORT>",
        "ghcr.io/mwieczorkiewicz/opcua-mcp:main-29734c4"
      ],
      "env": {
        "OPCUA_ENDPOINT": "<YOUR_OPCUA_ENDPOINT>",
        "OPCUA_AUTH_MODE": "<YOUR_OPCUA_AUTH_MODE>",
        "OPCUA_USERNAME": "<YOUR_OPCUA_USERNAME>",
        "OPCUA_PASSWORD": "<YOUR_OPCUA_PASSWORD>",
        "OPCUA_SECURITY_POLICY": "<YOUR_OPCUA_SECURITY_POLICY>",
        "OPCUA_SECURITY_MODE": "<YOUR_OPCUA_SECURITY_MODE>",
        "SERVER_TRANSPORT": "<YOUR_SERVER_TRANSPORT>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

{
  "servers": {
    "opc-ua-mcp-server": {
      "type": "stdio",
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "OPCUA_ENDPOINT=<YOUR_OPCUA_ENDPOINT>",
        "-e",
        "OPCUA_AUTH_MODE=<YOUR_OPCUA_AUTH_MODE>",
        "-e",
        "OPCUA_USERNAME=<YOUR_OPCUA_USERNAME>",
        "-e",
        "OPCUA_PASSWORD=<YOUR_OPCUA_PASSWORD>",
        "-e",
        "OPCUA_SECURITY_POLICY=<YOUR_OPCUA_SECURITY_POLICY>",
        "-e",
        "OPCUA_SECURITY_MODE=<YOUR_OPCUA_SECURITY_MODE>",
        "-e",
        "SERVER_TRANSPORT=<YOUR_SERVER_TRANSPORT>",
        "ghcr.io/mwieczorkiewicz/opcua-mcp:main-29734c4"
      ],
      "env": {
        "OPCUA_ENDPOINT": "<YOUR_OPCUA_ENDPOINT>",
        "OPCUA_AUTH_MODE": "<YOUR_OPCUA_AUTH_MODE>",
        "OPCUA_USERNAME": "<YOUR_OPCUA_USERNAME>",
        "OPCUA_PASSWORD": "<YOUR_OPCUA_PASSWORD>",
        "OPCUA_SECURITY_POLICY": "<YOUR_OPCUA_SECURITY_POLICY>",
        "OPCUA_SECURITY_MODE": "<YOUR_OPCUA_SECURITY_MODE>",
        "SERVER_TRANSPORT": "<YOUR_SERVER_TRANSPORT>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "mcpServers": {
    "opc-ua-mcp-server": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "OPCUA_ENDPOINT=<YOUR_OPCUA_ENDPOINT>",
        "-e",
        "OPCUA_AUTH_MODE=<YOUR_OPCUA_AUTH_MODE>",
        "-e",
        "OPCUA_USERNAME=<YOUR_OPCUA_USERNAME>",
        "-e",
        "OPCUA_PASSWORD=<YOUR_OPCUA_PASSWORD>",
        "-e",
        "OPCUA_SECURITY_POLICY=<YOUR_OPCUA_SECURITY_POLICY>",
        "-e",
        "OPCUA_SECURITY_MODE=<YOUR_OPCUA_SECURITY_MODE>",
        "-e",
        "SERVER_TRANSPORT=<YOUR_SERVER_TRANSPORT>",
        "ghcr.io/mwieczorkiewicz/opcua-mcp:main-29734c4"
      ],
      "env": {
        "OPCUA_ENDPOINT": "<YOUR_OPCUA_ENDPOINT>",
        "OPCUA_AUTH_MODE": "<YOUR_OPCUA_AUTH_MODE>",
        "OPCUA_USERNAME": "<YOUR_OPCUA_USERNAME>",
        "OPCUA_PASSWORD": "<YOUR_OPCUA_PASSWORD>",
        "OPCUA_SECURITY_POLICY": "<YOUR_OPCUA_SECURITY_POLICY>",
        "OPCUA_SECURITY_MODE": "<YOUR_OPCUA_SECURITY_MODE>",
        "SERVER_TRANSPORT": "<YOUR_SERVER_TRANSPORT>"
      }
    }
  }
}

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