Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/moonrepo/moon/agents-mdgit clone --depth 1 https://github.com/moonrepo/moonWrote 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.
[](https://agentmods.dev/instructions/moonrepo/moon/agents-md)<a href="https://agentmods.dev/instructions/moonrepo/moon/agents-md"><img src="https://agentmods.dev/badge/instructions/moonrepo/moon/agents-md.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.01226 | $0.01226 |
| Opus 5 | $0.00613 | $0.00613 |
| Sonnet 5 | $0.00245 | $0.00245 |
| Haiku 4.5 | $0.00123 | $0.00123 |
Grade A, and why
moon 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 3d 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.
How it starts
The opening of the file, as written. The whole thing — 102 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Guidance for AI coding agents working in the moon repository. moon is a repository management,
organization, orchestration, and notification tool for the web ecosystem. The core is written in
Rust and ships alongside a set of @moonrepo/* npm packages. moon is built with moon, so every
npm package is itself a moon project.
Repository layout
| Path | Contents |
|---|---|
.moon/ |
moon workspace config (workspace.yml, toolchains.yml, tasks/) |
crates/* |
Rust crates; crates/cli is the default binary |
packages/* |
TypeScript npm packages; @moonrepo/* scope |
wasm/* |
Test WASM plugins built for wasm32-wasip1 |
website/ |
Documentation site (also a moon project) |
Prerequisites
- Rust >= 1.97 (pinned in
rust-toolchain.toml, edition 2024) - Cargo — Rust toolchain
- Node.js >= 22.18
- Yarn >= 4
- Just — Rust task runner
- Vite+ — JavaScript toolchain
- Git >= 2.28
First-time setup:
just init # installs cargo-nextest, cargo-insta, cargo-llvm-cov, etc.
just build # builds the `moon` binary (required for the JS workflow)
vp install # installs node modules
Rust workflow
Use just for all Rust tasks. Always run format, lint, and test before finishing a change.
just build- Builds all Rust crates.just build-wasm- Builds test related WASM plugins (required for tests).just check- Checks all Rust crates without producing binaries.just format- Formats all Rust code withrustfmt.just lint- Lints all Rust code withclippy(treats warnings as errors).just test- Runs all Rust tests withcargo nextest.just test <filter>- Runs all Rust tests matching the filter.just test-package- Runs tests for a single package/crate by name.just cov- Runs Rust tests with LLVM coverage (slow).
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.
- 3d ago First seen · 102 lines · 1,226 tokens per session scan A 8b4bba7a3f92
moon AGENTS.md is an instructions file published in the GitHub repository moonrepo/moon (4,084 stars, last pushed 4d ago), licensed MIT. It adds 1,226 tokens to every session, about $0.0061 per session on Opus 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.
Other instructions, from other repositories
turborepo AGENTS.md
Instructions for vercel/turborepo, covering agents.md, architecture, keeping documentation up to date, pull request guidelines and always run pre-commit/pre-push hooks.
nx CLAUDE.md
Claude Code instructions for nrwl/nx, covering documentation contributions, quick reference, github issue response mode, plan-first mode (default) and immediate implementation mode.
nx AGENTS.md
AGENTS.md instructions for nrwl/nx, covering documentation contributions, quick reference, github issue response mode, plan-first mode (default) and immediate implementation mode.
Ghost AGENTS.md
AGENTS.md instructions for TryGhost/Ghost, covering agents.md, required workflow, repository skills and task routing and important warnings.
bun AGENTS.md
AGENTS.md instructions for oven-sh/bun, a project described as: Incredibly fast JavaScript runtime, bundler, test runner, and package manager – all in one.
bun CLAUDE.md
Claude Code instructions for oven-sh/bun, covering building and running bun, build commands, changes that don't require a build, testing and running tests.