quality

A set of rules and guidance for code formatting, linting, error handling, unsafe code, and documentation comments. Linting means automatically checking source code for likely mistakes and style problems.

In plain words
What is it for?
Use it when configuring formatters or lint rules, reviewing code quality, or setting standards for error handling and code comments.
Why use it?
It helps keep code consistent and catches common quality issues before changes are merged. It also defines formatting settings for several programming languages.

Skill for Claude CodeCodex

Part of the sdlc plugin — 10 skills, 5 commands, 4 agents, 1 hook shipped together

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

Made for: Claude Code, Codex.

Or install sdlc, the plugin that ships this one along with the rest of its 10 skills, 5 commands, 4 agents, 1 hook.

Per session 74 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,404 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 $0.00074 $0.01404
Opus 5 $0.00037 $0.00702
Sonnet 5 $0.00015 $0.00281
Haiku 4.5 $0.00007 $0.00140

Measured 3d ago against content hash eb2e3c87a156, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

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 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.

.github/skills/quality/SKILL.md · 206 lines

How it starts

The opening of the file, as written. The whole thing — 206 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code Quality Standards

Guidance for implementing code quality requirements including formatting, linting, error handling, and documentation.

Tooling

Available Tools: If using Claude Code, the pr-review-toolkit:code-reviewer agent can assess code quality against these standards. Use /pr-review-toolkit:review-pr for comprehensive PR review.

Formatting Requirements

Automated Formatting (MUST)

  1. All source code MUST pass automated formatting checks before merge
  2. Projects MUST define and commit formatting configuration files
  3. Import/include statements MUST be automatically sorted and grouped

Formatting Standards (MUST)

Standard Requirement
Line length MUST be 100 characters maximum
Indentation MUST be consistent (spaces or tabs, not mixed)
Line endings MUST be Unix-style (LF)
Trailing whitespace MUST be removed
Final newline MUST be present

Formatter Configuration by Language

Language Tool Config File
Rust rustfmt rustfmt.toml
TypeScript/JS Prettier .prettierrc
Python Black/Ruff pyproject.toml
Java google-java-format .editorconfig
Go gofmt (built-in)

Linting Requirements

Static Analysis (MUST)

  1. Projects MUST use static analysis tools appropriate to the language
  2. CI pipelines MUST run linting with warnings treated as errors
  3. Lint rule exceptions MUST be documented with justification

Lint Categories

Category Enforcement
Correctness MUST be enabled
Performance MUST be enabled
Style SHOULD be enabled
Complexity SHOULD be enabled
Documentation SHOULD be enabled
Pedantic SHOULD be enabled
Nursery/Experimental MAY be enabled

Read the full file on GitHub · 206 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. 3d ago First seen · 206 lines · 74 tokens per session scan A eb2e3c87a156

Subscribe to this mod's changes

quality is a skill published in the GitHub repository zircote-plugins/sdlc-quality (10 stars, last pushed 1mo ago), licensed MIT. It adds 74 tokens to every session and 1,404 once invoked, about $0.0004 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

Other skills, from other repositories

procoder

Work like a senior developer in a repository governed by procoder: run the commit gate before calling anything done, format and lint through the binary, and drive the spec, plan, todo, backlog, and sprint chain in .procoder/. Use this skill when the repository contains a .procoder/ directory or an AGENTS.md naming…

azrtydxb/procoder · 101 tokens

bestie-features

Add BestieTemplate features (AGENTS.md, changelog, dependabot, pre-commit, lint workflow, testitem runner) to a Julia package with the bestie CLI — no Julia needed. Use when asked to add one of these files/setups to a package, or to see what BestieTemplate can add.

JuliaBesties/BestieTemplate.jl · 71 tokens

typescript-best-practices

Enforces TypeScript best practices and modern patterns.

rohitg00/skillkit · 15 tokens

verify-patterns

Verify AI agent patterns including loop safety, retry limits, tool consistency, context size, and graph cycle analysis. Use when asked to "verify agent patterns", "check loops", "verify tools", or "check retry limits".

Aurite-ai/agent-verifier · 49 tokens

rust-skills

Comprehensive Rust coding guidelines with 265 rules across 26 categories. Use when writing, reviewing, or refactoring Rust code. Covers ownership, error handling, async patterns, concurrency, unsafe code, API design, memory optimization, performance, numeric safety, conversions, serde, pattern matching, macros…

leonardomso/rust-skills · 84 tokens

verify-language

Language-specific verification for Python, TypeScript/JavaScript, and Go. Checks type safety, language idioms, and best practices. Use when asked to "verify language", "check types", or for language-specific checks.

Aurite-ai/agent-verifier · 48 tokens