code-quality

A code-quality guide for creating or repairing code until it meets a repository’s required checks. These checks can include formatting, linting, type checking, tests, Docker checks, and Jenkins, a continuous-integration system.

In plain words
What is it for?
Build new code that matches project rules, repair failing code, and prepare AI-generated or older code for the checks used by the repository and its CI system.
Why use it?
It reduces the manual work of finding and fixing problems that would otherwise stop code from passing the project’s delivery checks.

Skill for Claude CodeCodex

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 skills/eea/eea.agent.skills/code-quality
Any agent
npx skills add eea/eea.agent.skills --skill code-quality
Clone the repo
git clone --depth 1 https://github.com/eea/eea.agent.skills

Made for: Claude Code, Codex.

Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,422 The whole file, excluding the scripts and references it only reads on demand.
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 $0.00040 $0.03422
Opus 5 $0.00020 $0.01711
Sonnet 5 $0.00008 $0.00684
Haiku 4.5 $0.00004 $0.00342

Measured yesterday against content hash 9ce60e286ce5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

code-quality 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 yesterday.

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.

skills/code-quality/SKILL.md · 330 lines

How it starts

The opening of the file, as written. The whole thing — 330 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code Quality

Use this skill when code must be created correctly from the start, or when existing code must be repaired until it passes the repository's actual quality gates.

Primary goal

Make code pass the real checks that block delivery:

  • repository formatters and linters
  • type checks
  • unit tests
  • integration tests when present
  • Docker-based test-image checks
  • Jenkins stages generated for the repository

The skill is optimized for AI-generated code, where the preferred outcome is: generate correct code up front so no later fix-up pass is required.

When to use

Use this skill when you need to:

  • implement new code that must pass CI on the first try
  • repair code that already exists but fails lint, typing, or tests
  • reduce manual --fix cleanup after AI generation
  • align a repository with Jenkins quality gates
  • decide which checks should auto-fix code and which should remain hard gates

Operating principles

  1. Treat the repository's real checks as the source of truth.
  2. Prefer prevention over cleanup: generate code that already matches project conventions.
  3. Separate safe auto-fixes from non-fixable policy rules.
  4. Do not assume one tool can fix everything.
  5. Do not declare success until the same commands used by Jenkins pass.
  6. Auto-fix before the commit, not in CI. Run the same safe-fixer commands Jenkins' Code linting stage verifies (ruff check --fix, ruff format, black, isort, prettier --write, etc.) every time you add or modify code, before it gets committed. Jenkins can't commit fixes back, so if auto-fixable debt reaches CI, the pre-commit step was skipped; don't rely on a Jenkins-side auto-fix stage to catch it. Prefer running these natively on the host rather than through Docker when the installed tool versions match Dockerfile.test — see "Native tools vs Docker for pre-commit auto-fix" below. Don't skip the check just because it's usually fast; skipping it is exactly how auto-fixable debt reaches CI in the first place.

Read the full file on GitHub · 330 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. yesterday First seen · 330 lines · 40 tokens per session scan A 9ce60e286ce5

Subscribe to this mod's changes

code-quality is a skill published in the GitHub repository eea/eea.agent.skills (2 stars, last pushed 25d ago), licensed MIT. It adds 40 tokens to every session and 3,422 once invoked, about $0.0002 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.

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