dotfiles: Instructions file for Codex

AGENTS.md

dotfiles AGENTS.md is an instructions file for Codex, OpenCode from martinemde/dotfiles. It costs 856 tokens per session, scanned A, original, ISC.

An instruction file for a Chezmoi-managed personal configuration repository. Chezmoi is a tool that generates installed settings files from source files in a repository.

In plain words
What is it for?
Finding the correct source files to edit, previewing and applying configuration changes, formatting files, managing packages with Bun, and handling Chezmoi scripts.
Why use it?
It prevents edits from being made to generated files that will later be overwritten. It also records the project’s commands and tool-specific cautions.

Instructions file for CodexOpenCode

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

This is martinemde/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 martinemde/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/martinemde/dotfiles/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/martinemde/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/martinemde/dotfiles/agents-md/github.svg)](https://agentmods.dev/instructions/martinemde/dotfiles/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/martinemde/dotfiles/agents-md"><img src="https://agentmods.dev/badge/instructions/martinemde/dotfiles/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 dotfiles AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/martinemde/dotfiles/agents-md"><img src="https://agentmods.dev/badge/instructions/martinemde/dotfiles/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 856 This file is loaded in full into every session.
When invoked 856 The same file — it is already loaded in full.
Security scan A 1 finding. 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 $0.00856 $0.00856
Opus 5.5 $0.00342 $0.00342
Sonnet 5.5 $0.00171 $0.00171
Haiku 4.5 $0.00086 $0.00086

Measured 8d ago against content hash d00dfd98a62d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

dotfiles AGENTS.md scanned grade A with 1 finding 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 8d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

expected to go through that path rather than a bare `curl`.
AGENTS.md · 67 lines

How it starts

The opening of the file, as written. The whole thing — 67 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Personal dotfiles managed by Chezmoi across macOS, Linux, and containers. Installation and per-tool notes live in README.md and docs/.

Version control

Work directly on main in this personal repository. Do not create feature branches or pull requests. Preview pushes with jj git push --bookmark main --dry-run.

Edit source files, not installed files

Chezmoi copies home/ to ~/. Edits to ~/ are overwritten on the next chezmoi apply, so always work in, eg home/dot_config/nvim/..., never ~/.config/nvim/.... This applies to anything under home/, including the Claude config in home/dot_claude/.

Preview and apply by file with chezmoi diff [target_path] and chezmoi apply [target_path].

Gotchas

  • sourceDir = "{{ .chezmoi.workingTree }}" — the source state is the repo root itself, not a copy under ~/.local/share/chezmoi. chezmoi edit and chezmoi apply operate on the checkout you're already in.
  • .agents/ and home/dot_agents/ hold canonical project and user agent configuration; .claude/, .codex/, home/dot_claude/, and home/dot_codex/ are native adapters.
  • Prettier is managed through the root package.json rather than mise, so that its plugins can be installed alongside it. bun run format / bun run format:check.
  • .prettierignore excludes .tmpl files — Go template syntax isn't valid in most target languages, so formatting them corrupts them.
  • Use bun for Node package operations, never npm or yarn.
  • run_onchange_* scripts re-execute when their rendered content changes, so a script that interpolates a version string reruns on version bumps. That's the mechanism for triggering reinstalls; incidental whitespace edits trigger it too.
  • home/dot_config/zsh/functions/ holds autoloaded zsh functions, one function per file named after the function.
  • The installer verifies GitHub release signatures with cosign by default and falls back to checksums; VERIFY_SIGNATURES=false skips both. Downloads added to install.sh are expected to go through that path rather than a bare curl.

Read the full file on GitHub · 67 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. 8d ago Changed · +2 lines · +61 tokens per session d00dfd98a62d
  2. 28d ago Changed · +5 lines · +39 tokens per session 70e08d60ad32
  3. 1mo ago Changed · -1 lines · -9 tokens per session 7556ba198a2d
  4. 1mo ago First seen · 61 lines · 765 tokens per session scan A 19850f95a63a

Subscribe to this mod's changes

dotfiles AGENTS.md is an instructions file published in the GitHub repository martinemde/dotfiles (10 stars, last pushed yesterday), licensed ISC. It adds 856 tokens to every session, about $0.0034 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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