plug.directory
Add my server

Install OPC-UA MCP Server in Claude Code

What you need first

  • Claude Code, installed.
  • Docker, which gives the docker command the server starts with.
  • Your own value for YOUR_OPCUA_ENDPOINT.

Steps

  1. Run this in a terminal, in the project folder. It adds the server for you in that project; put --scope user after claude mcp add to have it in every project.
claude mcp add --env OPCUA_ENDPOINT=YOUR_OPCUA_ENDPOINT --transport stdio opcua-mcp -- docker run -i --rm -e OPCUA_ENDPOINT ghcr.io/mwieczorkiewicz/opcua-mcp:main-29734c4
  1. Replace YOUR_OPCUA_ENDPOINT with your own value.
  2. Start Claude Code and type /mcp: the server is listed with its state.

Check it worked

Ask Claude Code: List the tools of opcua-mcp.

If it does not start

Cannot connect to the Docker daemon
Docker is not running. Start it, then restart Claude Code.
The server starts, but its tools fail
A YOUR_… placeholder is still in the config, or its value is wrong.

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