twincat-mcp-agent

v2026.06.04

TwinCAT ST Master - Expert in Beckhoff IEC 61131-3 ExST development

Claude Code5 Skills2 MCP serversstdioStreamable HTTP

By Cristian Civera17 GitHub starsUpdated 3 months ago

Directory evidence

Runtimes: Claude Code
Parsed components: 7 skill or MCP entries
Source updated: Jun 4, 2026
Manifest status: Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Install twincat-mcp-agent for Claude Code

Installs for the current user

claude plugin marketplace add IchenDEV/agent-plugin-mkt
claude plugin marketplace update agent-plugin-marketplace
claude plugin install twincat-mcp-agent@agent-plugin-marketplace

Paste and run these commands in a terminal with Claude Code. They add and refresh the PluginsMP catalog, then install this plugin.

The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.

Get the source manually

$ git clone https://github.com/TechIndustryX/twincat-agent

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The repository root is the plugin root.

Plugin files

twincat-mcp-agent/

├── .claude-plugin/plugin.json
├── skills/tc-advanced-patterns/SKILL.md
├── skills/tc-datatypes-memory/SKILL.md
├── skills/tc-naming-conventions/SKILL.md
├── skills/tc-syntax-control-flow/SKILL.md
├── skills/tc-troubleshooting/SKILL.md
└── .mcp.json

Included Skills5

tc-advanced-patternsskills/tc-advanced-patterns/SKILL.md

Use this skill when implementing advanced TwinCAT 3 (ExST) features. It covers Properties (GET/SET), Methods, initialization lifecycles (FB_init, FB_reinit, FB_exit), State Machine patterns, pragmas (attributes, conditional compiling, regions, message output), and PlcTaskSystemInfo access.

tc-datatypes-memoryskills/tc-datatypes-memory/SKILL.md

Use this skill when the user asks about data types, arrays, structures (STRUCT), enumerations (ENUM), pointers (POINTER), references (REFERENCE), or dynamic memory allocation (NEW/DELETE). It also contains critical rules for memory alignment (pack_mode) to minimize padding bytes.

tc-naming-conventionsskills/tc-naming-conventions/SKILL.md

Use this skill ALWAYS before generating or modifying the names of any variables, Function Blocks (FB), Data Types (DUT), Functions, Methods, Properties, or Interfaces. It contains the mandatory Beckhoff Hungarian notation rules, prefixes (b, n, f, st, fb, etc.), and shading/name resolution rules to avoid conflicts.

tc-syntax-control-flowskills/tc-syntax-control-flow/SKILL.md

Use this skill to correctly format ST (Structured Text) logic, operators, and control flow statements. It includes precedence rules, IF/CASE/FOR/WHILE loops syntax, mathematical/bitwise operator rules (MOD, SHL, ADR, BITADR), and the list of reserved IEC keywords.

tc-troubleshootingskills/tc-troubleshooting/SKILL.md

Use this skill ONLY when the user reports a build error, a compilation warning, or when `CheckPlcSyntaxAsync` fails. It contains specific fixes for TwinCAT IL Errors (4200-4213) and explanations for standard Compiler Warnings (1502-1990).

MCP servers2

twincat-automationstdio

command: cmd.exe
args: /c ${CLAUDE_PLUGIN_ROOT}/TwinCat.Xae.Mcp.Server.exe

twincat-infosysStreamable HTTP

url: https://twincat-infosys-mcp.cristiancivera.com/

MCP configuration uses runtime-provided plugin path placeholders such as ${PLUGIN_ROOT} or ${CLAUDE_PLUGIN_ROOT}. Review the manifest for the runtime-specific expansion rules.

Plugin manifests1

.claude-plugin/plugin.json

{
  "name": "twincat-mcp-agent",
  "version": "2026.06.04",
  "description": "TwinCAT ST Master - Expert in Beckhoff IEC 61131-3 ExST development",
  "author": {
    "name": "Cristian Civera",
    "email": "[email protected]"
  },
  "keywords": [
    "twincat",
    "beckhoff",
    "plc",
    "iec61131",
    "structured-text"
  ]
}

For maintainers

If you maintain this plugin, link to this source-backed listing from your README so users can review its manifest and indexed components.

[twincat-mcp-agent on Agent Plugins Marketplace](https://pluginsmp.com/plugins/twincat-mcp-agent)