amadeus AGENTS.md

amadeus AGENTS.md is an instructions file for Codex, OpenCode from amadeus-dlc/amadeus. It costs 1,698 tokens per session, scanned A, original, Apache-2.0.

Project instructions for the Amadeus repository that guide agents before and during coding. They cover cautious decision-making, simple and focused changes, worktrees, branches, and language rules.

In plain words
What is it for?
Use them when an agent works on Amadeus code or documentation. They help choose the change type, create an isolated worktree, and follow the repository's project-specific conventions.
Why use it?
They give coding agents consistent rules for avoiding accidental conflicts and keeping changes easy to review. They also specify which languages to use for communication, documentation, comments, and commits.

Instructions file for CodexOpenCode

Install

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.

agentmods
npx agentmods add instructions/amadeus-dlc/amadeus/agents-md
Clone the repo
git clone --depth 1 https://github.com/amadeus-dlc/amadeus

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 amadeus AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/amadeus-dlc/amadeus/agents-md.svg)](https://agentmods.dev/instructions/amadeus-dlc/amadeus/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/amadeus-dlc/amadeus/agents-md"><img src="https://agentmods.dev/badge/instructions/amadeus-dlc/amadeus/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 1,698 This file is loaded in full into every session.
When invoked 1,698 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.01698 $0.01698
Opus 5 $0.00849 $0.00849
Sonnet 5 $0.00340 $0.00340
Haiku 4.5 $0.00170 $0.00170

Measured 4d ago against content hash 26cba62ba3c3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

amadeus 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 4d 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 · 95 lines

How it starts

The opening of the file, as written. The whole thing — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.

@.agents/rules/amadeus.md @.agents/rules/amadeus-codex-suffix.md

To avoid collisions with other agents, always create a dedicated worktree and branch and switch to them before starting work.

AGENTS.md

Behavioral guidelines to reduce common LLM coding mistakes. Merge with project-specific instructions as needed.

Tradeoff: These guidelines bias toward caution over speed. For trivial tasks, use judgment.

Project Instructions

  • Communicate with the user in Japanese.
  • Write documentation in English by default.
  • As an exception, write amadeus/**/*.md in Japanese.
  • Write code comments in English.
  • Write commit messages in English.
  • If you find violations of these language rules while working, fix them as part of the same change.
  • For Amadeus self-development, explicitly select self-feature, self-fix, self-refactor, or self-document based on the change type. The canonical policy is amadeus/spaces/default/memory/project.md § Scope Overrides.

1. Think Before Coding

Don't assume. Don't hide confusion. Surface tradeoffs.

Before implementing:

  • State your assumptions explicitly. If uncertain, ask.
  • If multiple interpretations exist, present them - don't pick silently.
  • If a simpler approach exists, say so. Push back when warranted.
  • If something is unclear, stop. Name what's confusing. Ask.

2. Simplicity First

Minimum code that solves the problem. Nothing speculative.

  • No features beyond what was asked.
  • No abstractions for single-use code.
  • No "flexibility" or "configurability" that wasn't requested.
  • No error handling for impossible scenarios.
  • If you write 200 lines and it could be 50, rewrite it.

Ask yourself: "Would a senior engineer say this is overcomplicated?" If yes, simplify.

3. Surgical Changes

Touch only what you must. Clean up only your own mess.

When editing existing code:

  • Don't "improve" adjacent code, comments, or formatting.
  • Don't refactor things that aren't broken.
  • Match existing style, even if you'd do it differently.
  • If you notice unrelated dead code, mention it - don't delete it.

Read the full file on GitHub · 95 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. 4d ago First seen · 95 lines · 1,698 tokens per session scan A 26cba62ba3c3

Subscribe to this mod's changes

amadeus AGENTS.md is an instructions file published in the GitHub repository amadeus-dlc/amadeus (8 stars, last pushed 13d ago), licensed Apache-2.0. It adds 1,698 tokens to every session, about $0.0085 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 2026-08-31.

Related

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