dotfiles: Instructions file for Codex

AGENTS.md

dotfiles AGENTS.md is an instructions file for Codex, OpenCode from luizomf/dotfiles. It costs 875 tokens per session, scanned A, original, MIT.

Repository instructions for a personal configuration and setup project. They describe the project's purpose, file layout, supported systems, safety boundaries, and rules an automated coding agent must follow.

In plain words
What is it for?
Use them when editing the dotfiles repository, checking supported platforms, tracing conflicting documentation, or working within a directory with more specific instructions.
Why use it?
They give an agent project-specific context that generic coding rules do not include. This reduces the risk of changing shared setup, documentation, or user configuration incorrectly.

Instructions file for CodexOpenCode

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

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

Reuse

Borrowing it

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

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 dotfiles AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/luizomf/dotfiles/agents-md.svg)](https://agentmods.dev/instructions/luizomf/dotfiles/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/luizomf/dotfiles/agents-md"><img src="https://agentmods.dev/badge/instructions/luizomf/dotfiles/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 875 This file is loaded in full into every session.
When invoked 875 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 $0.00875 $0.00875
Opus 5 $0.00438 $0.00438
Sonnet 5 $0.00175 $0.00175
Haiku 4.5 $0.00088 $0.00088

Measured yesterday against content hash 6e0f2e11ded1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

dotfiles 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 yesterday.

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 · 78 lines

How it starts

The opening of the file, as written. The whole thing — 78 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Repository Guidelines

Purpose and scope

This public repository contains Otávio Miranda's personal dotfiles and bootstrap automation for macOS and Ubuntu. Other people also use it, so preserve personal preferences while keeping shared setup behavior safe and understandable.

  • These instructions apply repository-wide. pi/agent/AGENTS.md adds stricter rules for pi/agent/; follow the closest applicable AGENTS.md.
  • README.md is the user-facing source for supported setup and safety warnings. It documents clean-install testing only on ARM Ubuntu 24.04 and macOS Sequoia; do not claim broader support without evidence.
  • config/paths.sh is the documented source of truth for shared host paths. Preserve OM_PATHS_FILE overrides at callers that support them.
  • When documentation, tests, comments, and implementation disagree, trace the intended behavior and report the conflict instead of silently choosing one.

Repository map and boundaries

  • install.sh installs dependencies and replaces user configuration with links into this checkout. homebrew/Brewfile is the macOS package manifest.
  • zsh/, tmux/, nvim/, vim/, ghostty/, fastfetch/, and git/ contain deployed application and shell configuration.
  • scripts/ contains user commands, including utilities that contact remote machines, cloud services, and queues. Inspect dependencies and side effects before changing or running one.
  • pi/agent/ contains only static Pi configuration. Credentials, sessions, trust decisions, generated model state, and machine-specific model settings must remain local, as described in README.md.
  • prompts/ contains reusable prompt text. tests/ currently covers only scripts/bq.

Safety and public data

Treat every tracked file and Git commit as public.

  • Never add secrets, credentials, tokens, private keys, .env files, session data, personal logs, or other sensitive information. Do not rely on .gitignore as the only protection.
  • Do not add caches, generated output, runtime artifacts, or machine-local state unless explicitly requested and safe for publication.
  • Never run install.sh as a check: it is interactive and intentionally destructive. Do not run synchronization, upload, SSH, queue, or remote-host helpers without explicit authorization for their side effects.
  • Installation and setup changes require extra care because they can overwrite files, install software, and affect users beyond the repository owner.
  • Preserve unrelated personal configuration. Do not generalize, reformat, or "clean up" preferences outside the requested scope.

Read the full file on GitHub · 78 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. yesterday First seen · 78 lines · 875 tokens per session scan A 6e0f2e11ded1

Subscribe to this mod's changes

dotfiles AGENTS.md is an instructions file published in the GitHub repository luizomf/dotfiles (53 stars, last pushed yesterday), licensed MIT. It adds 875 tokens to every session, about $0.0044 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 2026-09-06.

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