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plcsense

Official registry Developer tools

Read-only TwinCAT ST intelligence: resolve symbols, library APIs, docs, validate PLC code.

Website

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

NPM package @zeugwerk/plcsense
Claude Code 
claude mcp add plcsense -e 'PLCSENSE_LICENSE_KEY=<your plcsense_license_key>' -- npx -y @zeugwerk/plcsense@1.1.22 mcp
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "plcsense": {
            "command": "npx",
            "args": [
                "-y",
                "@zeugwerk/plcsense@1.1.22",
                "mcp"
            ],
            "env": {
                "PLCSENSE_LICENSE_KEY": "<your plcsense_license_key>"
            }
        }
    }
}

Environment variables

  • PLCSENSE_LICENSE_KEY secret Optional one-shot licence key (same as plcsense license activate). Skip if this machine is already licensed.

Frequently asked questions

What is plcsense?

Read-only TwinCAT ST intelligence: resolve symbols, library APIs, docs, validate PLC code.

How do I install plcsense?

It runs on your machine. In Claude Code: claude mcp add plcsense -e 'PLCSENSE_LICENSE_KEY=<your plcsense_license_key>' -- npx -y @zeugwerk/plcsense@1.1.22 mcp. For other clients, paste the JSON configuration from this page into their MCP settings.

Does plcsense need an API key?

Yes. It expects PLCSENSE_LICENSE_KEY, which you set in its configuration.

Who maintains plcsense?

It is published by com.plcsense. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.