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Code Style Principles

Category: Dev Tools  ·  Sub-category: linters-formatters  ·  Last updated:
lang:phptype:review
ACTIVATE whenever writing or modifying production code in src/. ACTIVATE for code review, formatting questions, or 'coding standards'. Covers cross-language code style: control-structure spacing, early-return pattern, continue-vs-if/else in loops, explicit (non-truthy/falsy) checks, flattening nested null checks, parameter ordering. These rules go BEYOND standard linters. Language-specific syntax (no-empty in PHP, template literals in TS, nowdoc, optional chaining vs nullsafe) lives in php-code-conventions / ts-code-conventions.
Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

These conventions go beyond standard linters (PSR-12/PER, eslint/prettier). They encode the project's house style.

What this skill does

Code Style Principles is a community-contributed Claude Code skill in the linters-formatters sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/code-style-principles/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Code Style Principles Claude Code skill is built for developers, power users, and teams automating repetitive workflows and improving developer experience. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 158,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/code-style-principles
curl -L https://claudskills.com/skills/code-style-principles/SKILL.md \
  -o ~/.claude/skills/code-style-principles/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/code-style-principles/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/code-style-principles/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\code-style-principles\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Telegram

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Code Style Principles Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/code-style-principles/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Code Style Principles skill do?
ACTIVATE whenever writing or modifying production code in src/. ACTIVATE for code review, formatting questions, or 'coding standards'. Covers cross-language code style: control-structure spacing, early-return pattern, continue-vs-if/else in loops, explicit (non-truthy/falsy) checks, flattening nested null checks, parameter ordering. These rules go BEYOND standard linters. Language-specific syntax (no-empty in PHP, template literals in TS, nowdoc, optional chaining vs nullsafe) lives in php-code-conventions / ts-code-conventions.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Code Style Principles skill?
Use Code Style Principles when your Claude Code task falls under the Dev Tools category — specifically in the linters formatters area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Code Style Principles" or describe the task and let Claude pick). Browse related skills at /category/tools/.
What is a Claude Code skill and how does the Code Style Principles skill fit in?
A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Code Style Principles is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Dev Tools category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA
FabienSalles. (2026). Code Style Principles [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/code-style-principles/
BibTeX
@misc{code-style-principles-2026,
  author    = {FabienSalles},
  title     = {Code Style Principles [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/code-style-principles/}
}

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