clean-code-skills: Instructions file for Codex

AGENTS.md

clean-code-skills AGENTS.md is an instructions file for Codex, OpenCode from btseee/clean-code-skills. It costs 1,273 tokens per session, scanned A, a copy of clean-code-skills clean-code.instructions.md, MIT.

A set of instructions for coding agents working in a project. It covers clean-code rules, how work should proceed, where files belong, and which way dependencies may point.

In plain words
What is it for?
It is for guiding non-trivial coding work, including implementation, code review, testing, and refactoring.
Why use it?
It gives the agent project-wide guidance before it writes, reviews, tests, or refactors code. This helps keep changes consistent with the project's structure and coding rules.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: reads .claude/ paths; mentions AGENTS.md; mentions Codex.

This is btseee/clean-code-skills's own configuration. It tells Codex and OpenCode how to work on clean-code-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 clean-code-skills configures →

Reuse

Borrowing it

Nothing to install: this file belongs to btseee/clean-code-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/btseee/clean-code-skills/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/btseee/clean-code-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.

agentmods badge for clean-code-skills AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/btseee/clean-code-skills/agents-md/github.svg)](https://agentmods.dev/instructions/btseee/clean-code-skills/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/btseee/clean-code-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/btseee/clean-code-skills/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 clean-code-skills AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/btseee/clean-code-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/btseee/clean-code-skills/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,273 This file is loaded in full into every session.
When invoked 1,273 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 81% copy Near-identical to another mod 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 $0.01273 $0.01273
Opus 5.5 $0.00509 $0.00509
Sonnet 5.5 $0.00255 $0.00255
Haiku 4.5 $0.00127 $0.00127

Measured 22d ago against content hash 7436c790c1a7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

clean-code-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 22d 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.

Origin

This is a copy

81% identical to clean-code-skills clean-code.instructions.md — 21 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

AGENTS.md · 79 lines

How it starts

The opening of the file, as written. The whole thing — 79 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Instructions for AI coding agents (Codex CLI, Jules, opencode, Amp, Gemini CLI when configured for AGENTS.md, and any other harness that reads this file). In a project that installs this package, the managed block below is kept up to date by the installer; content outside the markers is never touched.

Load and apply the clean-code skill before non-trivial code writing, editing, review, testing, or refactoring. Depending on the install target, the skill lives at .claude/skills/clean-code/SKILL.md, .github/skills/clean-code/SKILL.md, skills/clean-code/SKILL.md, or in the agent's global skill registry as clean-code.

Clean Code Rules (clean-code-skills)

Non-negotiable for all code work.

Read the skill before non-trivial work. First existing path wins: .claude/skills/clean-code/SKILL.md, .agents/skills/clean-code/SKILL.md, .github/skills/clean-code/SKILL.md, skills/clean-code/SKILL.md. Then your stack's packs, named by the skill's scripts/detect_stack.py or references/framework-map.md.

Load project context first. If present: .clean/context.json, .clean/architecture.md, .clean/decisions.md, .clean/ledger.md, .clean/structure.md rows for your area; then project instruction files. Recorded decisions are settled. Project instructions outrank this block.

Work Loop

  1. Frame: behavior change, design-relevant assumptions, smallest scope, success check.
  2. Read first: nearby code, naming, tests, error style, framework idioms; search for existing implementations.
  3. Place: owning unit; which side of which boundary.
  4. Edit surgically: smallest diff, targeted edits (no whole-file regeneration), nothing unrelated; remove what your change orphaned.
  5. Verify: narrowest meaningful check, broader as risk demands.
  6. Review the diff against these rules, missing tests included.

Layers

  • Undeclared layers (.clean/architecture.md): follow framework pack's idiomatic structure.
  • Declared: Dependency Rule strict; source dependencies point inward, to higher-level policy; nothing inner names anything outer (class, function, variable, annotation, data format).
  • Business rules highest; database, web, UI, framework are details behind policy-owned interfaces.
  • SQL stays in data access; rows, ORM types, framework request/response objects never travel inward. Never derive business objects from framework base classes or annotate them; dependency-injection wiring in main.
  • Component graph acyclic; no speculative boundary, layer, or service.

Read the full file on GitHub · 79 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. 22d ago Changed · -3 lines · -355 tokens per session 7436c790c1a7
  2. 1mo ago Changed · +25 tokens per session 3ff7527029f3
  3. 1mo ago First seen · 82 lines · 1,603 tokens per session scan A 00e3753e3652

Subscribe to this mod's changes

clean-code-skills AGENTS.md is an instructions file published in the GitHub repository btseee/clean-code-skills (14 stars, last pushed 22d ago), licensed MIT. It adds 1,273 tokens to every session, about $0.0051 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 81% identical to clean-code-skills clean-code.instructions.md, differing in 21 lines, and is treated as a copy.

Related

Other instructions, from other repositories

vscode buildNext.instructions.md

Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

microsoft/vscode · 9,649 tokens

next.js AGENTS.md

AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.

vercel/next.js · 7,257 tokens

vscode oss-third-party-notices.instructions.md

Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).

microsoft/vscode · 5,262 tokens

langchain AGENTS.md

AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.

langchain-ai/langchain · 4,680 tokens

vscode copilot-instructions.md

Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).

microsoft/vscode · 2,731 tokens

deepseek-harness AGENTS.md

AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.

deepseek-ai/deepseek-harness · 4,159 tokens