# Install via npm
npm install -g @anthropic/claude-cli

# Or use directly with npx
npx @anthropic/claude-cli

# Use vt claude for better monitoring
vt claude "What is the capital of France?"

# VibeTunnel will show Claude's activities in real-time
vt claude -f src/*.js "Refactor this code"

# Simple question
vt claude "What is the capital of France?"

# Multi-line prompt with quotes
vt claude "Explain the following code:
function fibonacci(n) {
  if (n <= 1) return n;
  return fibonacci(n - 1) + fibonacci(n - 2);
}"

# Pipe input from another command
echo "Hello, world!" | vt claude "Translate this to Spanish"

# Read prompt from file
vt claude < prompt.txt

# Use heredoc for complex prompts
vt claude << 'EOF'
Analyze this SQL query for performance issues:
SELECT * FROM users WHERE created_at > '2023-01-01'
EOF

# Single file context
vt claude -f script.js "Explain what this script does"

# Multiple files
vt claude -f src/*.js -f tests/*.test.js "Find potential bugs"

# With explicit file references
vt claude -f config.json -f app.js "How does the app use the config?"

# Example: Using timeout command
timeout 900s vt claude -f "*.js" "Refactor this codebase"

# Example: In a Python script
subprocess.run(['vt', 'claude', 'analyze this'], timeout=900)

# Example: In a Node.js script
await exec('vt claude "complex task"', { timeout: 900000 })  // milliseconds

# Example: Safe Claude invocation pattern
git add -A  # Stage current state
timeout 900s vt claude -f src/*.js "Refactor error handling" || true
git status  # See what changed
git diff    # Review all modifications

# In scripts: Always check for changes
vt claude -f config.json "Update settings" || echo "Claude timed out"
# Still need to check if config.json was modified!

# Set API key
export ANTHROPIC_API_KEY="your-key-here"

# Set model (if supported)
export CLAUDE_MODEL="claude-3-opus-20240229"

# Save response to file
vt claude "Write a Python hello world" > hello.py

# Append to file
vt claude "Add error handling" >> hello.py

# Process output with other tools
vt claude "List 10 programming languages" | grep -i python

# Start interactive session
vt claude -i

# With initial context
vt claude -i -f project.md "Let's work on this project"

# What you ask:
vt claude -f buggy.js "Fix the syntax error on line 5"

# What Claude might do:
# 1. Fix the syntax error on line 5
# 2. Notice and fix other syntax errors
# 3. Identify potential bugs
# 4. Suggest better practices
# 5. Format the code
# 6. Add helpful comments

# Explicit constraints
vt claude -f config.json "Change ONLY the 'port' value to 8080. 
Make NO other changes. 
Do NOT fix any other issues you might notice.
Do NOT add comments or formatting.
Output ONLY the modified line."

# Surgical edits
vt claude -f script.sh "Replace EXACTLY the string 'localhost' with '0.0.0.0' on line 23.
Make NO other modifications to the file.
Do NOT analyze or improve the script."

# Let Claude be helpful (default)
vt claude -f app.js -f test.js "Add error handling"

# Constrained for automation
vt claude -f config.yml "Output ONLY the value of 'database.host'. No formatting." > db_host.txt

#!/bin/bash
# Get exactly what you need
PORT=$(vt claude -f config.json "Print ONLY the port number. Nothing else.")
echo "Server will run on port: $PORT"

vt claude --help              # Show all options
vt claude --version          # Show version
vt claude -f FILE            # Include file context
vt claude -i                 # Interactive mode
vt claude --no-markdown      # Disable markdown formatting
vt claude --json             # JSON output (if supported)