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Claude Code Integration

Setting up and using Claude Code for development workflows

claude-code cli setup workflow

Claude Code Integration

Learn how to set up and effectively use Claude Code - Anthropic's command-line interface for AI-assisted development.

What is Claude Code?

Claude Code is Anthropic's official CLI tool that brings Claude's AI capabilities directly into your development environment. It provides intelligent code assistance, file manipulation, and project understanding.

Installation

Prerequisites

  • Node.js 18+ or Python 3.8+

  • Git installed and configured

  • Active internet connection

    • Install via npm

    bash
npm install -g @anthropic-ai/claude-code

    Install via pip

    bash
pip install claude-code

    Verify Installation

    bash
claude-code --version

    Initial Setup

    1. API Key Configuration

    bash
# Set your Anthropic API key
claude-code auth login

# Or set environment variable
export ANTHROPIC_API_KEY="your-api-key-here"

    2. Project Initialization

    bash
# Initialize Claude Code in your project
cd your-project
claude-code init

# This creates .claude-code/config.json

    3. Configuration Options

    json
{
  "model": "claude-3-sonnet-20240229",
  "max_tokens": 4096,
  "temperature": 0.1,
  "include_patterns": ["src/**/*.js", "*.md"],
  "exclude_patterns": ["node_modules/**", "*.log"]
}

    Core Features

    File Operations

    bash
# Read and analyze files
claude-code read src/components/Button.jsx

# Edit files with AI assistance
claude-code edit src/utils/helpers.js "Add input validation"

# Create new files
claude-code create src/components/Modal.jsx "React modal component"

    Code Analysis

    bash
# Analyze code quality
claude-code analyze src/

# Find potential bugs
claude-code review src/components/

# Suggest optimizations
claude-code optimize src/utils/api.js

    Project Understanding

    bash
# Get project overview
claude-code explain

# Find specific functionality
claude-code find "authentication logic"

# Generate documentation
claude-code document src/api/

    Development Workflows

    1. Feature Development

    bash
# Start with analysis
claude-code analyze src/features/user-management/

# Create new components
claude-code create src/components/UserProfile.jsx \
  "User profile component with avatar, name, and edit functionality"

# Implement tests
claude-code create tests/UserProfile.test.js \
  "Unit tests for UserProfile component"

    2. Bug Fixing

    bash
# Analyze error logs
claude-code read error.log

# Find related code
claude-code find "user authentication error"

# Suggest fixes
claude-code fix src/auth/login.js \
  "Fix authentication timeout issue"

    3. Code Review

    bash
# Review pull request
claude-code review --diff HEAD~1

# Check specific files
claude-code review src/components/NewFeature.jsx

# Security analysis
claude-code security-check src/api/

    Best Practices

    1. Context Management

    bash
# Provide context for better results
claude-code --context="This is a React TypeScript project using Redux" \
  create src/store/userSlice.ts "Redux user slice"

    2. Incremental Development

    bash
# Start small and iterate
claude-code create src/components/Button.jsx "Basic button component"
claude-code edit src/components/Button.jsx "Add size variants"
claude-code edit src/components/Button.jsx "Add TypeScript interfaces"

    3. Documentation Integration

    bash
# Generate comprehensive docs
claude-code document --format=markdown src/api/ > docs/api.md

# Create README sections
claude-code create README-features.md \
  "Feature list for the user management system"

    Advanced Usage

    Custom Commands

    Create project-specific commands in .claude-code/commands/:

    javascript
// .claude-code/commands/test-component.js
module.exports = {
  name: 'test-component',
  description: 'Create component with tests',
  run: async (claude, componentName) => {
    await claude.create(
      `src/components/${componentName}.jsx`,
      `React component: ${componentName}`
    );
    await claude.create(
      `tests/${componentName}.test.js`,
      `Tests for ${componentName} component`
    );
  }
};

    Integration with Git

    bash
# Analyze changes before commit
claude-code review --staged

# Generate commit messages
claude-code commit-message

# Create pull request descriptions
claude-code pr-description --branch feature/user-auth

    CI/CD Integration

    yaml
# .github/workflows/claude-review.yml
name: Claude Code Review
on: [pull_request]

jobs:
  review:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - name: Install Claude Code
        run: npm install -g @anthropic-ai/claude-code
      - name: Review Changes
        run: claude-code review --diff origin/main
        env:
          ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}

    Troubleshooting

    Common Issues

    API Rate Limits

    bash
# Check rate limit status
claude-code status

# Use lower temperature for consistent results
claude-code --temperature=0.1 analyze src/

    Context Too Large

    bash
# Limit file analysis
claude-code --max-files=10 analyze src/

# Use specific patterns
claude-code --include="*.js,*.jsx" analyze src/

    Configuration Problems

    bash
# Reset configuration
claude-code config reset

# Check current settings
claude-code config show

# Set specific options
claude-code config set model claude-3-haiku-20240307

    Performance Tips

    1. Use Appropriate Models

  • Claude-3-Haiku - Fast, simple tasks

  • Claude-3-Sonnet - Balanced performance

  • Claude-3-Opus - Complex analysis (slower)

    • 2. Optimize Context

    bash
# Focus on relevant files
claude-code --include="src/components/**" analyze

# Exclude unnecessary files
claude-code --exclude="*.test.js,*.spec.js" document

    3. Batch Operations

    bash
# Process multiple files together
claude-code review src/components/*.jsx

# Use project-wide commands
claude-code optimize --recursive src/

    Security Considerations

    1. Sensitive Data

    bash
# Exclude sensitive files
claude-code --exclude="*.env,*.key,config/secrets.js" analyze

    2. API Key Management

    bash
# Use environment variables
export ANTHROPIC_API_KEY="$(cat ~/.anthropic/api-key)"

# Or use system keychain
claude-code auth store-secure

    3. Code Privacy

  • Review what code is sent to API

  • Use local-only commands when possible

  • Implement company policies for AI tool usage

    • Integration Examples

    With VS Code

    json
// .vscode/tasks.json
{
  "tasks": [
    {
      "label": "Claude Analyze",
      "type": "shell",
      "command": "claude-code",
      "args": ["analyze", "${file}"],
      "group": "build"
    }
  ]
}

    With Pre-commit Hooks

    yaml
# .pre-commit-config.yaml
repos:
  - repo: local
    hooks:
      - id: claude-review
        name: Claude Code Review
        entry: claude-code review --staged
        language: system
        stages: [pre-commit]

    Getting Help

    Built-in Help

    bash
# General help
claude-code --help

# Command-specific help
claude-code edit --help

# Show examples
claude-code examples

    Community Resources

  • Official Documentation

  • GitHub Issues

  • Community Discord

Next Steps

  • Start Small - Try basic file operations

  • Build Workflows - Create project-specific commands

  • Integrate Tools - Connect with your existing development tools

  • Share Knowledge - Document successful patterns with your team

  • Stay Updated - Follow new features and best practices