TIA Portal MCP servers and AI agent skills

How AI connects to TIA Portal

An MCP server or skill can only do what TIA Portal lets programs do. TIA Portal exposes 2 automation interfaces:

• TIA Portal Openness API (.NET): Openness is a set of .NET Framework 4.8 assemblies (Siemens.Engineering.*) that attach to a running TIA Portal or start one, then read and change projects, PLC software, HMI, hardware and networks, and import or export blocks as SimaticML or SIMATIC SD documents. The Windows user must be in the Siemens TIA Openness group, and TIA Portal shows an access prompt when a program attaches. Every MCP server here is an Openness client, and each targets specific major versions. Documentation
• TIA Scripting Python (Python): Siemens also distributes TIA Scripting Python (V1.4.3 at the time of writing) as a download from Industry Online Support rather than PyPI. It wraps part of Openness for PLC data, HMI, devices, libraries and projects in Python, and the totally-integrated-claude plugin routes simpler tasks to it and more advanced object-model work to C# Openness.

What Siemens offers

Siemens unveiled the Eigen Engineering Agent at Hannover Messe on 20 April 2026 and says it is available to TIA Portal users through Siemens Xcelerator. It works inside TIA Portal V19, V20 and V21 on PLC code in SCL and LAD, WinCC Unified scripts, hardware and PROFINET configuration and documentation, with a one-month trial on the Siemens marketplace. The Engineering Copilot TIA page now redirects to it, and Siemens describes no MCP access.

Checked 4 Nov 2026. Sources: Siemens brings AI to the physical world with Eigen Engineering Agent (press release, 20 April 2026), Engineering Copilot TIA / Eigen Engineering Agent (Siemens)

What you can do with TIA Portal and AI

• Read PLC blocks, data types and tag tables from an open project, explain them, and follow cross-references for a tag or block.
• Export the PLC program as SIMATIC SD or SCL source files into a Git folder, edit them, preview the import and push only the changed files back.
• Write or update SCL blocks and tags in batches with a dry-run preview, then compile and return the compiler messages.
• Read the hardware configuration with I/O addresses matched to PLC tags, or add devices and set PROFINET names and subnets.
• Start a PLCSIM Advanced simulation and write tags to test generated logic (T-IA Connect).

Taken from the listings' own documentation. Check each listing for exactly what it supports.

Installing

The listings here document setup for Claude Code, Claude Desktop, Codex, Cursor, GitHub Copilot CLI, MiMoCode, OpenCode and VS Code (GitHub Copilot). Install steps, copied from each project's own documentation, are on each listing's page. Most TIA Portal integrations run on your own computer next to TIA Portal, so you need TIA Portal installed and licensed on the same machine unless the listing says otherwise.