agentmods.dev

mac-set-up: Instructions file for Codex

AGENTS.md

mac-set-up AGENTS.md is an instructions file for Codex, OpenCode from ben196888/mac-set-up. It costs 558 tokens per session, scanned A, original, MIT.

Repository guidance for a macOS setup tool that installs developer software and configures system preferences through shell scripts.

In plain words
What is it for?
Understanding or modifying the installer, its language-specific setup scripts, and its macOS environment configuration.
Why use it?
It gives a coding agent the project’s purpose, structure, commands, and conventions before it changes files.

Instructions file for CodexOpenCode

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

This is ben196888/mac-set-up's own configuration. It tells Codex and OpenCode how to work on mac-set-up 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 mac-set-up configures →

not rated 11repo 3mo ago A scan 558 tokens original MIT
View source ↗ ben196888/mac-set-up
Reuse

Borrowing it

Nothing to install: this file belongs to ben196888/mac-set-up. 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/ben196888/mac-set-up/master/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/ben196888/mac-set-up

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 mac-set-up AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/ben196888/mac-set-up/agents-md/github.svg)](https://agentmods.dev/instructions/ben196888/mac-set-up/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/ben196888/mac-set-up/agents-md"><img src="https://agentmods.dev/badge/instructions/ben196888/mac-set-up/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 mac-set-up AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/ben196888/mac-set-up/agents-md"><img src="https://agentmods.dev/badge/instructions/ben196888/mac-set-up/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 558 This file is loaded in full into every session.
When invoked 558 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 $0.00558 $0.00558
Opus 5.5 $0.00223 $0.00223
Sonnet 5.5 $0.00112 $0.00112
Haiku 4.5 $0.00056 $0.00056

Measured 2mo ago against content hash 35df48dd750f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mac-set-up 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 · 44 lines

How it starts

The opening of the file, as written. The whole thing — 44 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

This file provides guidance to Codex when working with code in this repository.

What This Repo Does

This is a macOS development environment automation tool. Running ./install.sh sets up a complete dev environment in one shot: Homebrew, CLI tools, languages, IDEs, browsers, productivity apps, AI coding tools, and system preferences.

Running

chmod +x install.sh
./install.sh

Individual scripts can also be run directly, for example ./languages/python.sh or ./agentic/agentic_skills.sh --codex.

There are no build, lint, or test commands. This is a shell-based installer with no automated test suite.

Architecture

install.sh is the orchestrator and executes the other scripts in order:

  1. essential.sh - Xcode CLT, Rosetta 2, Homebrew with Apple Silicon vs Intel path detection
  2. cli_tools.sh - OpenSSL, ripgrep, ast-grep, tree, ack
  3. git/install.sh - Git config, ed25519 SSH key generation, GitHub CLI auth
  4. zsh/install.sh - Zsh, Oh My Zsh, Starship prompt
  5. terminal.sh - Ghostty terminal
  6. languages/ - Per-language setup scripts for .NET, Go, Java, JavaScript, LaTeX, Python, Rust
  7. ides.sh - VS Code, Cursor
  8. browsers.sh - Firefox, Chrome, Edge, DuckDuckGo
  9. devtools.sh - OrbStack, kubectl, Postman, Google Cloud SDK, ChatGPT, Claude Code, Playwright CLI
  10. agentic/install.sh - Agentic instructions, skills, and MCP setup
  11. tools.sh - AppCleaner, Spotify, Slack, Messenger, Signal, Discord, Rectangle
  12. macos.sh - System defaults such as Dock, trackpad, keyboard, and Spotlight configuration

Key Conventions

  • Always use the BREW_PREFIX variable from essential.sh instead of hardcoding Homebrew paths.
  • Config files live alongside their installers and are copied into place. Do not switch this repo to symlink-based setup.
  • Manage reusable agent setup through agentic/install.sh; configuration lives in agentic/agentic.conf.
  • Shell profile additions should be conditional so a missing tool does not break the shell.
  • Prefer cp and cp -r for installation steps.

Read the full file on GitHub · 44 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 · 44 lines · 558 tokens per session scan A 35df48dd750f

Subscribe to this mod's changes

mac-set-up AGENTS.md is an instructions file published in the GitHub repository ben196888/mac-set-up (11 stars, last pushed 3mo ago), licensed MIT. It adds 558 tokens to every session, about $0.0022 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.

macosmacos-setupsetupsetup-macossetup-script
Related

mac-set-up AGENTS.md compared with instructions from other repositories

mac-set-up AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
mac-set-up AGENTS.mdben196888/mac-set-upInstructions file113mo agoMITA558Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA9,719GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143ktodayMITA7,461Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA5,516GitHub Copilot
langchain AGENTS.mdlangchain-ai/langchainInstructions file149ktodayMITA4,680Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA3,093GitHub Copilot
vscode ai-customization.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA1,907GitHub Copilot