tiaportal-mcp: Instructions file for Codex

AGENTS.md

tiaportal-mcp AGENTS.md is an instructions file for Codex, OpenCode from heilingbrunner/tiaportal-mcp. It costs 339 tokens per session, scanned A, original, MIT.

A guide for AI coding assistants working on a project that uses TIA Portal, Siemens software for configuring and programming industrial control systems. It explains when and how to run the project's .NET tests.

In plain words
What is it for?
Use it to follow the repository's test command, check required setup before testing, ask the user for permission, and give local test instructions when tests cannot be run.
Why use it?
It prevents tests from being run in an unsuitable environment, since some may need TIA Portal, licenses, or PLC project files.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md.

This is heilingbrunner/tiaportal-mcp's own configuration. It tells Codex and OpenCode how to work on tiaportal-mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything tiaportal-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to heilingbrunner/tiaportal-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/heilingbrunner/tiaportal-mcp/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/heilingbrunner/tiaportal-mcp

Made for: Codex, OpenCode.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for tiaportal-mcp AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/heilingbrunner/tiaportal-mcp/agents-md.svg)](https://agentmods.dev/instructions/heilingbrunner/tiaportal-mcp/agents-md)
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<a href="https://agentmods.dev/instructions/heilingbrunner/tiaportal-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/heilingbrunner/tiaportal-mcp/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 339 This file is loaded in full into every session.
When invoked 339 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00339 $0.00339
Opus 5 $0.00169 $0.00169
Sonnet 5 $0.00068 $0.00068
Haiku 4.5 $0.00034 $0.00034

Measured 6d ago against content hash a4b5cb9cdeca, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

tiaportal-mcp AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

AGENTS.md · 39 lines

What it actually says

Agents Guide

This repository can be used with agentic coding assistants. Follow these guidelines to collaborate safely and efficiently.

Test Execution Policy

  • Offer to run tests, but only run them after explicit user confirmation.
  • Tests may require user‑specific environment conditions (e.g., installed TIA Portal, licenses, PLC project assets), so do not assume they will pass in your environment.
  • When offering to run tests, clearly state prerequisites and potential side effects.
  • If the user declines or does not respond, provide concise instructions for the user to run tests locally instead of running them yourself.

Standard Commands

dotnet test

If tests need to write to temporary locations or access external resources, note these requirements up front.

How To Ask For Confirmation

Use clear, actionable language. For example:

  • "I can run dotnet test to validate the changes. Some tests require TIA Portal and project assets on this machine. Do you want me to run them now?"
  • If approved: proceed and summarize results. If not approved: provide steps the user can run.

Environment Considerations

  • Respect the user's environment constraints (e.g., offline, restricted permissions, licensed software).
  • If a command fails due to environment limitations, do not retry destructively; report the exact failure and suggest alternatives.
  • Document any meaningful limitations or deviations in the commit message or relevant README, per the Contributor Guidelines.

Formatting & Encoding

  • Preserve existing indentation style (tabs vs. spaces).
  • Do not modify file encodings; keep UTF-8 BOM where present.
  • Ensure Windows CRLF line endings are retained when editing files.
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 6d ago First seen · 39 lines · 339 tokens per session scan A a4b5cb9cdeca

Subscribe to this mod's changes

tiaportal-mcp AGENTS.md is an instructions file published in the GitHub repository heilingbrunner/tiaportal-mcp (94 stars, last pushed 11mo ago), licensed MIT. It adds 339 tokens to every session, about $0.0017 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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