apple-skills: Instructions file for Codex

AGENTS.md

apple-skills AGENTS.md is an instructions file for Codex, OpenCode from Prisma-Labs-Dev/apple-skills. It costs 1,120 tokens per session, scanned A, original, MIT.

Maintainer instructions for a repository of Apple development skills. They explain which files are written by hand, which are generated, where installed agent instructions live, and where human-facing documentation belongs.

In plain words
What is it for?
Use them when adding or changing Apple-related skills, refreshing generated reference documents, updating installation guidance, or maintaining the plugin and skill structure.
Why use it?
They help maintainers update the correct source files without overwriting generated content or confusing maintainer notes with instructions used by coding agents.

Instructions file for CodexOpenCode

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

This is Prisma-Labs-Dev/apple-skills's own configuration. It tells Codex and OpenCode how to work on apple-skills 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 apple-skills configures →

Reuse

Borrowing it

Nothing to install: this file belongs to Prisma-Labs-Dev/apple-skills. 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/Prisma-Labs-Dev/apple-skills/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/Prisma-Labs-Dev/apple-skills

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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Your own site
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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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Your own site · 80×15
<a href="https://agentmods.dev/instructions/prisma-labs-dev/apple-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/prisma-labs-dev/apple-skills/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,120 This file is loaded in full into every session.
When invoked 1,120 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 $0.01120 $0.01120
Opus 5.5 $0.00448 $0.00448
Sonnet 5.5 $0.00224 $0.00224
Haiku 4.5 $0.00112 $0.00112

Measured 1mo ago against content hash 0a8a81960581, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

apple-skills 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 · 55 lines

How it starts

The opening of the file, as written. The whole thing — 55 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Apple Skills Maintainer Guide

This file is for agents maintaining this repository. It is not end-user documentation, and it is not the runtime instruction file for agents that install these skills into Claude Code, Codex, Cursor, or another coding agent.

Table of Contents

Need Start Here Notes
Explain the project to humans README.md Keep it brief, friendly, and installation-focused. Put copy-pasteable user commands here, not maintainer runbooks.
Understand install surfaces README.md and .claude-plugin/ Claude Code installs via the plugin marketplace; Codex and Cursor use the Skills CLI to copy skills/ entries into agent skill directories.
Maintain generated Apple docs MAINTAINING.md Refresh workflow, DocC rendering details, tooling, and repo structure live there.
Update skill behavior skills/<name>/SKILL.md These are the installed agent-facing instructions for a specific skill. Edit them deliberately; they are consumed by downstream agents.
Update generated reference docs skills/<name>/*.md Use the generated-vs-hand-authored rules below. Prefer refresh tooling over hand edits for generated files.
Work on doc rendering tooling scripts/apple-docs.ts and scripts/apple-docs/ TypeScript tooling fetches Apple's DocC JSON and renders markdown.
Run checks package.json Use pnpm check for the full gate; individual commands are listed in MAINTAINING.md.
Validate install commands README.md install blocks Test in a temporary HOME/XDG_CONFIG_HOME so real agent configs are not modified.
Publish Claude Code plugin metadata .claude-plugin/ Marketplace/plugin metadata for Claude Code lives here.

Generated vs Hand-Authored Files

Do not classify an entire skill directory as generated or hand-authored. A single skills/<name>/ directory can contain both.

Pattern Ownership How to Change
skills/**/SKILL.md Hand-authored Edit directly when changing installed skill instructions.
skills/**/*.md with YAML frontmatter containing source: https://developer.apple.com/... Generated from Apple's DocC JSON Regenerate with the tooling in MAINTAINING.md; avoid hand edits except to repair the generator or unblock a refresh.
skills/**/*.videos.md Generated sidecar for Apple DocC video references Regenerate with the docs refresh flow; keep sidecar behavior generic.
skills/**/references/**, skills/**/docs/**, skills/**/assets/**, skills/**/scripts/**, skills/**/agents/** Hand-authored unless the file itself has generated frontmatter Edit directly, preserving local guide or asset conventions.
Root docs such as README.md, MAINTAINING.md, AGENTS.md, and CHANGELOG.md Hand-authored Edit directly for human or maintainer documentation.
scripts/**, tests/**, package.json, biome.json, tsconfig.json Hand-authored tooling Edit directly and run the relevant checks.
Generated-looking failure output or stale fetched content Generated artifact to fix at the source Do not polish it manually; refresh, remove, or fix the generator/source mapping.

Read the full file on GitHub · 55 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 · 55 lines · 1,120 tokens per session scan A 0a8a81960581

Subscribe to this mod's changes

apple-skills AGENTS.md is an instructions file published in the GitHub repository Prisma-Labs-Dev/apple-skills (347 stars, last pushed 25d ago), licensed MIT. It adds 1,120 tokens to every session, about $0.0045 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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