How Skill Enables Claude Code to Understand Professional Terminology and Automate Workflows

What is Skill

Skill is a reusable command‑template system that lets Claude Code retain professional procedures. It is defined in a Markdown file with YAML front‑matter, enabling the AI to execute a predefined workflow on demand.

Key characteristics

Scope : Prompt‑level commands are single‑turn; Skills persist across sessions.

Structure : Prompt text is free‑form; Skill definitions use Markdown + YAML.

Trigger : Manual slash commands (e.g., /code-review) or automatic matching based on context.

Reusability : Low for plain prompts, high for Skills.

Skill trigger mechanisms

Slash commands

Enter a slash command such as /code-review to load the corresponding Skill file and run its workflow.

# Built‑in slash commands
/init          # Initialize CLAUDE.md
/review        # Code review
/security-review # Security review

# Plugin/custom Skills (require plugin)
/code-review
/skill-creator

Automatic matching rules

Skills can be auto‑activated when the AI detects relevant intent. Matching uses the description field in the Skill’s front‑matter.

Detect request to create a new Skill → auto‑load skill-creator Code‑review request → auto‑match code-review Debugging scenario → auto‑match

systematic-debugging

Skill vs System Prompt

Activation: on‑demand vs always loaded

Granularity: independent task vs overall behavior

Reusability: shared across projects vs follows project config

Maintenance: separate file vs embedded in config

Existing Skills overview

Writing‑related

simplify

– rewrites text to remove AI‑like phrasing (plugin) wechat-viral-article – generates popular WeChat articles (project custom)

Development

code-review

– performs code review, identifies bugs and security issues (plugin) systematic-debugging – executes a structured debugging process (plugin) test-driven-development – guides TDD workflow (plugin)

Workflow

writing-plans

– creates multi‑step implementation plans (plugin) executing-plans – executes plans with checkpoints (plugin) brainstorming – facilitates idea generation and design exploration (plugin)

Practical example: after writing technical documentation, entering /simplify rewrites it into a smoother, more natural version.

How to use Skills

Built‑in commands

After launching Claude Code, use slash commands directly:

/init          # Initialize CLAUDE.md
/review        # Code review
/security-review # Security review

Custom Skills

Place Skill files under the project directory .claude/skills/:

.claude/skills/
├── my-custom-skill/
│   ├── SKILL.md      # Core definition
│   └── references/   # Detailed docs

Restart Claude Code or start a new session for the Skill to take effect.

Plugin‑provided Skills

Enable plugin Skills in .claude/settings.json:

{
  "enabledPlugins": [
    "commit-commands",
    "code-review"
  ]
}

Example demonstrating Skill value

Without Skill:

You: Review this PR.
AI: The code looks fine… (plain text, no structure)

With /code-review Skill:

You: /code-review
AI: ## Code Review Report

### Overall Assessment
[2‑3 sentence summary]

### Critical Issues (must fix)
- File A, line 23: SQL injection risk

### Important Issues (recommended)
- File B, line 45: Missing error handling

### Positive Aspects
- Good abstraction in module C
…

Summary

Skill codifies expert workflows so the AI performs the right action at the right time, eliminating repeated background context, stabilizing output quality, and allowing team conventions to be reused across projects.

Related link

Skill system documentation: https://docs.anthropic.com/zh-CN/docs/claude-code/skills