Festo Codesys Mcp

io.github.efranceschettiPublished by GitHub account efranceschettiv1.0.1Updated Oct 24, 2026

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

VerifiedSTDIODesktop onlyCloud & Infrastructure Developer Tools Security & Monitoring

Server details

Identifier: io.github.efranceschetti/festo-codesys-mcp
Transport: STDIO
Runtime: Desktop only
Trust: Verified
Published: Sep 16, 2026

Security note

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Overview

AI-generated overview

Generates validated IEC 61131-3 Structured Text and PLCopen XML for Festo/CODESYS PLC projects, with optional tools to drive a live CODESYS IDE.

What you can do: This local MCP server helps an assistant produce IEC 61131-3 Structured Text and PLCopen XML for Festo/CODESYS PLCs, with validation of the generated XML. It also exposes optional ide_* tools that drive a live CODESYS V3.5 instance on Windows, plus cpx_*/edcon_* hardware commissioning tools that are described as bench use only. File-writing tools operate inside a workspace directory by default.
When to use it: Useful when an assistant needs to draft or validate PLCopen XML and Structured Text for Festo/CODESYS controllers, or to script a running CODESYS V3.5 IDE. The hardware commissioning tools are intended for bench work rather than production lines.
Requirements: Runs locally over stdio, installed with npx from the npm package festo-codesys-mcp; desktop only, no web execution. The ide_* tools need FESTO_MCP_CODESYS_PATH pointing at CODESYS.exe (Windows) and FESTO_MCP_CODESYS_PROFILE naming the CODESYS profile. FESTO_MCP_PYTHON can point to a Python interpreter with lxml for the XSD/semantic validators and hardware tools. No authentication is declared.

Before you install

File-writing tools can write outside the workspace only if FESTO_MCP_ALLOW_OUTSIDE_WORKSPACE is set to 1, so leave it unset unless you intend that. The cpx_*/edcon_* hardware commissioning tools are enabled by FESTO_MCP_ENABLE_HARDWARE=1 and are flagged as bench use only, meaning they can act on connected hardware. The ide_* tools drive a live CODESYS instance and may change project state.

Installation

In SourceWeft

Open Festo Codesys Mcp in the dashboard and add it to a workspace.
Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Tools

SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

v1.0.1LatestSep 16, 2026

Score

25% of the applicable checks met

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Tools listed15 pts
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DescriptionRequired15 pts
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Documentation15 pts
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License10 pts
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