Agent skill

Coding Style

by quarkusio in quarkusio/quarkus

Quarkus code style conventions: formatting, visibility, naming, logging, and general style rules for the Quarkus codebase.

Apache-2.0Auto-check passedWriting & Content

Install Coding Style

skills CLI
$ npx skills add quarkusio/quarkus --skill coding-style -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install quarkusio/quarkus coding-style --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/quarkusio/quarkus.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/coding-style .claude/skills/coding-style && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
coding-style
GitHub stars
16k
Token cost
~789 tokens
SKILL.md length
347 words
Files
1
Skills in repo
12
Repo updated
First seen
Licence
Apache-2.0

At a glance

Quarkus code style conventions: formatting, visibility, naming, logging, and general style rules for the Quarkus codebase.

  • Tasks that involve Plain language and style rules
  • SKILL.md covers Formatting, Visibility, Naming and General Style, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Coding Style is an agent skill from quarkusio/quarkus. Quarkus code style conventions: formatting, visibility, naming, logging, and general style rules for the Quarkus codebase.

Its SKILL.md is about 790 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Writing & Content, covering Plain language and style rules. It works with Java. The repository describes itself as: Quarkus: Supersonic Subatomic Java. The licence is Apache-2.0.

When your agent uses it

  • Tasks that involve Plain language and style rules

Example prompts

  • “/coding-style”

What it can do on your machine

Read from SKILL.md and the folder at commit 8e813fd. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Coding Style loads about 789 tokens when it runs. Until then it costs about 34 tokens; SKILL.md has 347 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~34
When it runs · the whole SKILL.md, loaded when a task matches
~789

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from quarkusio/quarkus at commit 8e813fd, republished under its Apache-2.0 licence (© quarkusio). 347 words, ~789 tokens.

Download SKILL.mdSave it as .claude/skills/coding-style/SKILL.md (or your agent's skills folder).
name
coding-style
description
Quarkus code style conventions: formatting, visibility, naming, logging, and general style rules for the Quarkus codebase.

Coding Style

Formatting

  • Quarkus uses 4-space indentation (no tabs)
  • The project enforces formatting via formatter-maven-plugin and impsort-maven-plugin, let the formatting plugins do their work, never use -Dno-format
  • Formatter config: independent-projects/ide-config/src/main/resources/eclipse-format.xml
  • Run ./mvnw process-sources on your module to auto-format before committing
  • The build will fail on formatting violations
  • Imports are sorted and organized automatically; do not manually organize imports

Visibility

  • Prefer package-private (default) visibility for internal implementation classes
  • Use public for user-facing API and for classes/methods that need to be accessed across packages (e.g., processors, recorders, build items). Prefer package-private for purely internal implementation details
  • Use protected when designing for extension/subclassing
  • Internal classes should go in .internal or .impl sub-packages (e.g., io.quarkus.<ext>.runtime.internal)

Naming

  • Deployment processors: <Feature>Processor.java
  • Recorders: <Feature>Recorder.java
  • Build items: <Description>BuildItem.java
  • Config interfaces: <Feature>Config.java or <Feature>BuildTimeConfig.java / <Feature>RuntimeConfig.java
  • Artifact IDs: quarkus-<name> (runtime), quarkus-<name>-deployment (deployment)
  • Package root: io.quarkus.<extension-name> (hyphens become underscores)

General Style

  • No @author tags in Javadoc — Git history tracks authorship
  • No wildcard imports
  • Never use fully-qualified class names inline — always add an import statement instead
  • Avoid static imports except for well-known patterns (e.g., test assertions)
  • Minimize lambdas and streams in runtime code — reduces memory footprint for native
  • Prefer descriptive method and variable names over comments
  • Update existing code comments if your changes make them invalid
  • Never remove existing code comments that are still valid
  • Keep methods focused and short; extract when complexity warrants it
  • Use Optional for API return types that may be absent. In internal hot runtime code paths, direct null checks are acceptable for performance
  • Commits should be atomic and semantic — properly squash before submitting PRs. This helps during bisects and makes it easier to revert changes when needed
  • Don't use deprecated methods or classes in new code

Logging

  • Use JBoss Logging (org.jboss.logging.Logger) as the logging API
  • Do NOT use System.out.println or System.err.println
  • Do NOT use SLF4J, java.util.logging, or Log4j directly in Quarkus core/extension code

Extension Descriptions

Extension descriptions (in runtime/pom.xml or quarkus-extension.yaml) should:

  • Be short (no hover required)
  • Describe the function, not the technology
  • Start with an action verb, unconjugated (Connect foo, not Connects foo)
  • Not mention "Quarkus" or "extension"
  • Not repeat the extension name

© quarkusio, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .agents/skills/coding-style of quarkusio/quarkus.

Open the folder on GitHubat commit 8e813fd

Compare with similar skills

Coding Style next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Coding Style compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Coding Style this skillquarkusio/quarkus16k—~789Automated safety check: PassApache-2.0
Asd Ste100danyuchn/asd-ste100-skill3.9k—~4.1kAutomated safety check: PassMIT
Natural Japanese Business Writingcoji/natural-japanese1.9k—~2.1kAutomated safety check: PassMIT
Technical Writing Standardcursor/plugins10k10 repos~2.4kAutomated safety check: PassNone
PgjevrealZachi/pg-jev1k—~2.9kAutomated safety check: PassCustom licence
Defensive Writing Editorlennney/stop-that-shit2.5k1 repos~902Automated safety check: PassMIT

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Works with

Questions about Coding Style

What does Coding Style do?

Quarkus code style conventions: formatting, visibility, naming, logging, and general style rules for the Quarkus codebase. Coding Style is an agent skill from quarkusio/quarkus. Quarkus code style conventions: formatting, visibility, naming, logging, and general style rules for the Quarkus codebase.

When should I use Coding Style?

Coding Style fits situations like: tasks that involve Plain language and style rules.

How do I install Coding Style in Claude Code?

Run `npx skills add quarkusio/quarkus --skill coding-style -a claude-code`. Or copy the skill folder (.agents/skills/coding-style in quarkusio/quarkus) into .claude/skills/coding-style in your project. Claude Code loads it when a task matches its description.

How do I install Coding Style in Codex?

Run `npx skills add quarkusio/quarkus --skill coding-style -a codex`. Or copy the skill folder (.agents/skills/coding-style in quarkusio/quarkus) into .agents/skills/coding-style in your project. Codex loads it when a task matches its description.

Can I use Coding Style in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add quarkusio/quarkus --skill coding-style -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/coding-style, .gemini/skills/coding-style, .github/skills/coding-style and .opencode/skills/coding-style in your project.

What does Coding Style need to run?

SKILL.md names no scripts, command-line tools or credentials: Coding Style is instructions for the agent only.

Does Coding Style access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Coding Style safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Coding Style use?

Coding Style is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Coding Style use?

About 789 tokens (SKILL.md is roughly 3.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Coding Style?

Skills that share tags, products or a category with Coding Style: Asd Ste100 (danyuchn/asd-ste100-skill, 3.9k stars), Natural Japanese Business Writing (coji/natural-japanese, 1.9k stars), Technical Writing Standard (cursor/plugins, 10k stars) and Pgjev (realZachi/pg-jev, 1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Coding Style?

quarkusio (a GitHub organization) maintains it in quarkusio/quarkus, which has 15,929 GitHub stars. The repository holds 12 skills in this directory. The repository was last updated on October 6, 2026.

Source: quarkusio/quarkus on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.