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emacs: Instructions file for Codex

AGENTS.md

emacs AGENTS.md is an instructions file for Codex, OpenCode from sous-chefs/emacs. It costs 795 tokens per session, scanned A, original, Apache-2.0.

Repository instructions for an Emacs installation cookbook, including package choices, dependency management, and known platform limitations.

In plain words
What is it for?
Use them when changing Emacs installation recipes, package defaults, platform support, or the cookbook's dependency configuration.
Why use it?
They help coding agents preserve existing recipes and choose the correct system package for Debian-, Ubuntu-, Fedora-, and RHEL-family systems. They also prevent the project from returning to an unsupported dependency tool.

Instructions file for CodexOpenCode

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

This is sous-chefs/emacs's own configuration. It tells Codex and OpenCode how to work on emacs 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 emacs configures →

not rated 10repo 18d ago A scan 795 tokens original Apache-2.0
View source ↗ sous-chefs/emacs supermarket.chef.io
Reuse

Borrowing it

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

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.

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README.md
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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.

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Per session 795 This file is loaded in full into every session.
When invoked 795 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 $0.00795 $0.00795
Opus 5.5 $0.00318 $0.00318
Sonnet 5.5 $0.00159 $0.00159
Haiku 4.5 $0.00080 $0.00080

Measured 2mo ago against content hash 12af01bc844c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

emacs 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 · 76 lines

How it starts

The opening of the file, as written. The whole thing — 76 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Cookbook Purpose

Provides the emacs_package resource for installing Emacs

Agent Findings

  • This cookbook is in an incremental modernization pass. Preserve existing public recipes and attributes unless a later full migration is explicitly selected.
  • Dependency management should use Policyfile.rb; do not reintroduce Berkshelf.

Known Limitations

Package Availability

GNU Emacs does not publish a separate vendor APT or RPM repository for this cookbook to manage. This cookbook installs from each platform's standard package repositories.

APT (Debian/Ubuntu)

  • Ubuntu 24.04 LTS publishes emacs, emacs-nox, and GUI variants from the emacs source package. The emacs-nox package is published for amd64, arm64, armhf, ppc64el, riscv64, and s390x.
  • Debian 12 ships emacs and emacs-nox in the main archive, with newer builds also available from bookworm-backports.
  • The cookbook default for Debian-family platforms is emacs-nox, which matches the terminal-first package name used by both Debian and Ubuntu.

DNF/YUM (RHEL family / Fedora)

  • Fedora publishes emacs plus emacs-nw, the terminal-focused subpackage used by this cookbook.
  • RHEL 9 compatible repositories publish emacs, emacs-common, and emacs-nox. Current EL9 package indexes show builds for at least x86_64 and aarch64.
  • This cookbook defaults to emacs on RHEL-family platforms because emacs is the stable package name across those repositories, while Fedora keeps a distinct emacs-nw package for terminal-only installs.

Arch Linux

  • Arch Linux publishes both emacs and emacs-nox in the extra repository.
  • Current package metadata is published for x86_64.

FreeBSD

  • FreeBSD publishes emacs packages through the ports tree, with flavors including emacs, emacs-nox, emacs-canna, and emacs-wayland.
  • Current package indexes show emacs and emacs-nox builds across multiple supported architectures, including aarch64 and amd64.
  • The legacy editors/emacs-nox11 path used by the old cookbook is obsolete under the current FreeBSD package flavor model.

Read the full file on GitHub · 76 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. 2mo ago First seen · 76 lines · 795 tokens per session scan A 12af01bc844c

Subscribe to this mod's changes

emacs AGENTS.md is an instructions file published in the GitHub repository sous-chefs/emacs (10 stars, last pushed 18d ago), licensed Apache-2.0. It adds 795 tokens to every session, about $0.0032 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 2026-08-31.

chefchef-cookbookchef-resourceemacshacktoberfestmanaged-by-terraform
Related

emacs AGENTS.md compared with instructions from other repositories

emacs AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
emacs AGENTS.mdsous-chefs/emacsInstructions file1018d agoApache-2.0A795Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA9,719GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143kyesterdayMITA7,461Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchainInstructions file149kyesterdayMITA4,680Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA5,516GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA3,093GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file274k2d agoMITA4,313Codex, OpenCode