moonrepo-skill: Instructions file for Codex

AGENTS.md

moonrepo-skill AGENTS.md is an instructions file for Codex, OpenCode from hyperb1iss/moonrepo-skill. It costs 547 tokens per session, scanned A, original, Apache-2.0.

A set of instructions for Moonrepo, a tool that coordinates builds and tasks across a monorepo—a code repository containing several related projects. It also covers Proto, a tool for managing language and tool versions.

In plain words
What is it for?
Use it when configuring monorepo tasks, running Moonrepo builds or checks, or pinning tool versions with Proto.
Why use it?
It gives coding agents guidance for recognizing Moonrepo and Proto files and using the supported commands and configuration.

Instructions file for CodexOpenCode

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

This is hyperb1iss/moonrepo-skill's own configuration. It tells Codex and OpenCode how to work on moonrepo-skill 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 moonrepo-skill configures →

Reuse

Borrowing it

Nothing to install: this file belongs to hyperb1iss/moonrepo-skill. 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/hyperb1iss/moonrepo-skill/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/hyperb1iss/moonrepo-skill

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/hyperb1iss/moonrepo-skill/agents-md"><img src="https://agentmods.dev/badge/instructions/hyperb1iss/moonrepo-skill/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 547 This file is loaded in full into every session.
When invoked 547 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 $0.00547 $0.00547
Opus 5.5 $0.00219 $0.00219
Sonnet 5.5 $0.00109 $0.00109
Haiku 4.5 $0.00055 $0.00055

Measured 2mo ago against content hash f3be85de848d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

moonrepo-skill 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 · 83 lines

How it starts

The opening of the file, as written. The whole thing — 83 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Compatibility

This skill package is compatible with the skills.sh open agent ecosystem.

Supported Agents

  • claude-code — Anthropic's Claude Code CLI
  • cursor — Cursor AI editor
  • copilot — GitHub Copilot
  • gemini — Google Gemini CLI
  • amp — Amp agent
  • opencode — Opencode agent
  • antigravity — Antigravity agent

Installation

# Install for all supported agents
npx add-skill hyperb1iss/moonrepo-skill

# Install for specific agent
npx add-skill hyperb1iss/moonrepo-skill -a claude-code
npx add-skill hyperb1iss/moonrepo-skill -a cursor

# List available skills
npx add-skill hyperb1iss/moonrepo-skill --list

Skills Provided

Skill Description
moon Polyglot monorepo build system configuration and usage
proto Multi-language version manager and plugin development

Skill Triggers

moon

Activates when the user mentions:

  • moon.yml, .moon/workspace.yml, .moon/toolchains.yml
  • moon tasks, moon ci, moon query
  • monorepo configuration, task orchestration
  • moonrepo in general

proto

Activates when the user mentions:

  • .prototools, proto commands
  • Tool version management, version pinning
  • Installing node/rust/python/go versions
  • proto plugins, WASM plugins

Directory Structure

skills/
├── moon/
│   ├── SKILL.md              # Core moon instructions
│   ├── references/
│   │   ├── workspace-config.md
│   │   ├── task-config.md
│   │   ├── cli-reference.md
│   │   └── v2-migration.md
│   └── examples/
│       ├── workspace.yml
│       ├── moon.yml
│       └── ci-workflow.yml
└── proto/
    ├── SKILL.md              # Core proto instructions
    ├── references/
    │   ├── config.md
    │   └── commands.md
    └── examples/
        └── prototools-full.toml

Contributing

Contributions welcome! Please ensure skills follow the Agent Skills format.

Read the full file on GitHub · 83 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 · 83 lines · 547 tokens per session scan A f3be85de848d

Subscribe to this mod's changes

moonrepo-skill AGENTS.md is an instructions file published in the GitHub repository hyperb1iss/moonrepo-skill (7 stars, last pushed 9mo ago), licensed Apache-2.0. It adds 547 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 2026-08-31.

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