MCP Server

io.github.efranceschetti/festo-codesys-mcp MCP Server

Name: io.github.efranceschetti/festo-codesys-mcp MCP Server
Author: io.github.efranceschetti

io.github.efranceschetti/festo-codesys-mcp

Registry

What is the io.github.efranceschetti/festo-codesys-mcp MCP server?

MCP server for Festo/CODESYS PLCs: IEC 61131-3 ST + validated PLCopen XML generation.

How to install io.github.efranceschetti/festo-codesys-mcp

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

FESTO_MCP_CODESYS_PATH
Optional. Absolute path to CODESYS.exe — enables the 12 ide_* tools that drive a live CODESYS V3.5 instance (Windows only).
FESTO_MCP_CODESYS_PROFILE
Required when using the ide_* tools. CODESYS profile name exactly as shown in the CODESYS version selector.
FESTO_MCP_PYTHON
Optional. Python interpreter for the XSD/semantic validators and hardware tools (needs lxml).
FESTO_MCP_ENABLE_HARDWARE
Optional. Set to 1 to enable the cpx_*/edcon_* hardware commissioning tools (bench use only).
FESTO_MCP_ALLOW_OUTSIDE_WORKSPACE
Optional. Set to 1 to allow file-writing tools to write outside the workspace directory.

Claude Desktop

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "festo-codesys-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "festo-codesys-mcp"
      ],
      "env": {
        "FESTO_MCP_CODESYS_PATH": "<YOUR_FESTO_MCP_CODESYS_PATH>",
        "FESTO_MCP_CODESYS_PROFILE": "<YOUR_FESTO_MCP_CODESYS_PROFILE>",
        "FESTO_MCP_PYTHON": "<YOUR_FESTO_MCP_PYTHON>",
        "FESTO_MCP_ENABLE_HARDWARE": "<YOUR_FESTO_MCP_ENABLE_HARDWARE>",
        "FESTO_MCP_ALLOW_OUTSIDE_WORKSPACE": "<YOUR_FESTO_MCP_ALLOW_OUTSIDE_WORKSPACE>"
      }
    }
  }
}

Cursor

~/.cursor/mcp.json

{
  "mcpServers": {
    "festo-codesys-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "festo-codesys-mcp"
      ],
      "env": {
        "FESTO_MCP_CODESYS_PATH": "<YOUR_FESTO_MCP_CODESYS_PATH>",
        "FESTO_MCP_CODESYS_PROFILE": "<YOUR_FESTO_MCP_CODESYS_PROFILE>",
        "FESTO_MCP_PYTHON": "<YOUR_FESTO_MCP_PYTHON>",
        "FESTO_MCP_ENABLE_HARDWARE": "<YOUR_FESTO_MCP_ENABLE_HARDWARE>",
        "FESTO_MCP_ALLOW_OUTSIDE_WORKSPACE": "<YOUR_FESTO_MCP_ALLOW_OUTSIDE_WORKSPACE>"
      }
    }
  }
}

Windsurf

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "festo-codesys-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "festo-codesys-mcp"
      ],
      "env": {
        "FESTO_MCP_CODESYS_PATH": "<YOUR_FESTO_MCP_CODESYS_PATH>",
        "FESTO_MCP_CODESYS_PROFILE": "<YOUR_FESTO_MCP_CODESYS_PROFILE>",
        "FESTO_MCP_PYTHON": "<YOUR_FESTO_MCP_PYTHON>",
        "FESTO_MCP_ENABLE_HARDWARE": "<YOUR_FESTO_MCP_ENABLE_HARDWARE>",
        "FESTO_MCP_ALLOW_OUTSIDE_WORKSPACE": "<YOUR_FESTO_MCP_ALLOW_OUTSIDE_WORKSPACE>"
      }
    }
  }
}

VS Code

.vscode/mcp.json

{
  "servers": {
    "festo-codesys-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "festo-codesys-mcp"
      ],
      "env": {
        "FESTO_MCP_CODESYS_PATH": "<YOUR_FESTO_MCP_CODESYS_PATH>",
        "FESTO_MCP_CODESYS_PROFILE": "<YOUR_FESTO_MCP_CODESYS_PROFILE>",
        "FESTO_MCP_PYTHON": "<YOUR_FESTO_MCP_PYTHON>",
        "FESTO_MCP_ENABLE_HARDWARE": "<YOUR_FESTO_MCP_ENABLE_HARDWARE>",
        "FESTO_MCP_ALLOW_OUTSIDE_WORKSPACE": "<YOUR_FESTO_MCP_ALLOW_OUTSIDE_WORKSPACE>"
      }
    }
  }
}

Claude Code

claude mcp add festo-codesys-mcp --env FESTO_MCP_CODESYS_PATH=<YOUR_FESTO_MCP_CODESYS_PATH> --env FESTO_MCP_CODESYS_PROFILE=<YOUR_FESTO_MCP_CODESYS_PROFILE> --env FESTO_MCP_PYTHON=<YOUR_FESTO_MCP_PYTHON> --env FESTO_MCP_ENABLE_HARDWARE=<YOUR_FESTO_MCP_ENABLE_HARDWARE> --env FESTO_MCP_ALLOW_OUTSIDE_WORKSPACE=<YOUR_FESTO_MCP_ALLOW_OUTSIDE_WORKSPACE> -- npx -y festo-codesys-mcp