zephyr-rtos-ai: Instructions file for Codex

AGENTS.md

zephyr-rtos-ai AGENTS.md is an instructions file for Codex, OpenCode from ksachdeva/zephyr-rtos-ai. It costs 763 tokens per session, scanned A, original, Apache-2.0.

Project instructions that explain a Zephyr RTOS repository, its coding-agent context, its folders, and rules for working with embedded-device software.

In plain words
What is it for?
They help with development in Zephyr, an operating system for connected and resource-limited devices, including areas such as Bluetooth, device drivers, networking, memory, and power management.
Why use it?
They give a coding agent the project structure, setup details, and restrictions needed to make informed changes safely.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions Claude Code; mentions AGENTS.md; mentions Gemini CLI.

This is ksachdeva/zephyr-rtos-ai's own configuration. It tells Codex and OpenCode how to work on zephyr-rtos-ai 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 zephyr-rtos-ai configures →

Reuse

Borrowing it

Nothing to install: this file belongs to ksachdeva/zephyr-rtos-ai. 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/ksachdeva/zephyr-rtos-ai/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/ksachdeva/zephyr-rtos-ai

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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README.md
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Per session 763 This file is loaded in full into every session.
When invoked 763 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 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 $0.00763 $0.00763
Opus 5.5 $0.00305 $0.00305
Sonnet 5.5 $0.00153 $0.00153
Haiku 4.5 $0.00076 $0.00076

Measured 1mo ago against content hash 0eab3f95024d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

zephyr-rtos-ai 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 1mo 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 · 84 lines

How it starts

The opening of the file, as written. The whole thing — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AI Coding Assistant Context

This document provides context for AI coding assistants (Open Code, Claude Code, Gemini CLI, GitHub Copilot, etc.) to understand the zephyr-rtos-ai project and assist with development of features.

Repository Structure

├── .gemini                                 # Gemini CLI related stuff (settings.json, commands, agents etc)
├── .agents                                 # Contains skills, commands etc for various different Coding agents that respect .agents folder
├── .gitattributes
├── .gitignore
├── .pre-commit-config.yaml
├── .python-version
├── .venv                                   # `uv` created `.venv`
├── .vscode
├── skills                            # The Agent Skills for Zephyr RTOS
│   ├── zephyr-bluetooth-le
│   ├── zephyr-device-drivers
│   ├── zephyr-devicetree
│   ├── zephyr-fs
│   ├── zephyr-gpio
│   ├── zephyr-i2c
│   ├── zephyr-isr
│   ├── zephyr-json
│   ├── zephyr-kconfig
│   ├── zephyr-kernel-datapassing
│   ├── zephyr-kernel-synchronization
│   ├── zephyr-memory
│   ├── zephyr-net-socket
│   ├── zephyr-netbuf
│   ├── zephyr-power-management
│   ├── zephyr-settings
│   ├── zephyr-shell-commands
│   ├── zephyr-smf
│   ├── zephyr-spi
│   ├── zephyr-storage
│   ├── zephyr-testing
│   ├── zephyr-threading
│   ├── zephyr-uart
│   └── zephyr-wifi
├── AGENTS.md                               # This file
├── internal                                # Skills, Agents, Extra stuff to assist with the development in this repository
│   ├── assets
│   └── zephyr-skill-creator                # A skill that guides with the creation of other skills
├── LICENSE
├── poe.toml
├── pyproject.toml
├── README.md
├── src                                     # A python project that would contain useful utils
│   └── zephyr_rtos_ai
├── uv.lock
└── zephyr-ws                               # The Zephyr workspace, mostly exists for testing & agents to access documentation
    ├── .west
    └── west.yml

Project Overview

The primary objective of this repository is to create reusable AI agents, skills, tools etc for Zephyr RTOS based firmware development.

Read the full file on GitHub · 84 lines

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. 1mo ago First seen · 84 lines · 763 tokens per session scan A 0eab3f95024d

Subscribe to this mod's changes

zephyr-rtos-ai AGENTS.md is an instructions file published in the GitHub repository ksachdeva/zephyr-rtos-ai (23 stars, last pushed 4mo ago), licensed Apache-2.0. It adds 763 tokens to every session, about $0.0031 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.

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