What is STBud-for-TwinCAT AGENTS.md?

A set of instructions for developing a TwinCAT extension called tcxaeshell. It explains the project’s design rules and how its parts fit together.

Helping an agent work on tcxaeshell extension code, understand its MEF composition setup, and choose between standard extensions and add-ins.

It gives a coding agent project-specific guidance, including why common extension approaches may fail. This reduces the risk of applying unsuitable patterns.

How muratbilge/STBud-for-TwinCAT configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to muratbilge/STBud-for-TwinCAT. 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/muratbilge/STBud-for-TwinCAT/master/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/muratbilge/STBud-for-TwinCAT

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/muratbilge/stbud-for-twincat/agents-md/github.svg)](https://agentmods.dev/instructions/muratbilge/stbud-for-twincat/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/muratbilge/stbud-for-twincat/agents-md"><img src="https://agentmods.dev/badge/instructions/muratbilge/stbud-for-twincat/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/muratbilge/stbud-for-twincat/agents-md"><img src="https://agentmods.dev/badge/instructions/muratbilge/stbud-for-twincat/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 4,440 This file is loaded in full into every session.

When invoked 4,440 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin unknown 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.

Model	Per session	Once invoked
Fable 5.1	$0.04440	$0.04440
Opus 5.5	$0.01776	$0.01776
Sonnet 5.5	$0.00888	$0.00888
Haiku 4.5	$0.00444	$0.00444

Measured 2mo ago against content hash e7acd640a6df, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

STBud-for-TwinCAT 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 2mo 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 · 336 lines

The source is not reproduced here

No licence file

Read it on GitHub

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.

2mo ago First seen · 336 lines · 4,440 tokens per session scan A e7acd640a6df

Subscribe to this mod's changes

STBud-for-TwinCAT AGENTS.md is an instructions file published in the GitHub repository muratbilge/STBud-for-TwinCAT (11 stars, last pushed 3mo ago), with no licence file. It adds 4,440 tokens to every session, about $0.0178 per session on Opus 5.5. 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.

Hardware and IoT

STBud-for-TwinCAT AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
STBud-for-TwinCAT AGENTS.mdmuratbilge/STBud-for-TwinCAT	Instructions file	11	3mo ago	none	A	4,440	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

STBud-for-TwinCAT: Instructions file for Codex