mqttx: Instructions file for Codex

AGENTS.md

mqttx AGENTS.md is an instructions file for Codex, OpenCode from cignosystems/mqttx. It costs 5,227 tokens per session, scanned A, original, no licence file.

Project instructions for MQTTX, a tool for sending and receiving messages with MQTT, a messaging protocol often used by connected devices. They cover the project guidance, transport choices, and how clients and brokers work.

In plain words
What is it for?
Use them when working on MQTTX code, especially when choosing a network transport or reasoning about the client and broker sides.
Why use it?
They give coding agents the project context needed to make changes consistently.

Instructions file for CodexOpenCode

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

This is cignosystems/mqttx's own configuration. It tells Codex and OpenCode how to work on mqttx 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 mqttx configures →

Reuse

Borrowing it

Nothing to install: this file belongs to cignosystems/mqttx. 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/cignosystems/mqttx/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/cignosystems/mqttx

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 mqttx AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/cignosystems/mqttx/agents-md/github.svg)](https://agentmods.dev/instructions/cignosystems/mqttx/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/cignosystems/mqttx/agents-md"><img src="https://agentmods.dev/badge/instructions/cignosystems/mqttx/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.

agentmods 80×15 button for mqttx AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/cignosystems/mqttx/agents-md"><img src="https://agentmods.dev/badge/instructions/cignosystems/mqttx/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 5,227 This file is loaded in full into every session.
When invoked 5,227 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.05227 $0.05227
Opus 5.5 $0.02091 $0.02091
Sonnet 5.5 $0.01045 $0.01045
Haiku 4.5 $0.00523 $0.00523

Measured 2d ago against content hash 1ef9ccb4f2bb, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mqttx 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 2d 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 · 407 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

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.

  1. 2d ago Changed · +2 lines · +40 tokens per session 1ef9ccb4f2bb
  2. 9d ago Changed · +2 lines · +39 tokens per session 45a221108deb
  3. 10d ago Changed · +5 lines · +74 tokens per session cb53cd547ec4
  4. 11d ago Changed · +9 tokens per session 4bcf59507da7
  5. 14d ago Changed · +1 lines · +15 tokens per session 469aecba0217
  6. 15d ago Changed · +2 lines · +40 tokens per session 8ae9ab69dee8
  7. 17d ago Changed · +12 lines · +185 tokens per session da1d8f992114
  8. 18d ago Changed · +50 lines · +647 tokens per session eb6bc74584b8
  9. 19d ago Changed · +18 lines · +334 tokens per session f1ffcb72c482
  10. 2mo ago First seen · 315 lines · 3,844 tokens per session scan A 5fc774cd3362

Subscribe to this mod's changes

mqttx AGENTS.md is an instructions file published in the GitHub repository cignosystems/mqttx (11 stars, last pushed 2d ago), with no licence file. It adds 5,227 tokens to every session, about $0.0209 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.

Related

mqttx AGENTS.md compared with instructions from other repositories

mqttx AGENTS.md next to 6 instructions from other repositories
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vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA3,093GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file274k2d agoMITA4,313Codex, OpenCode