claude-code-skills-reference/demos

Skill Demonstrations

This directory contains automated demonstrations of each skill using VHS (Video Home System) by Charmbracelet.

VHS allows you to write terminal recordings as code, making demos reproducible, version-controllable, and typo-free.

📁 Demo Structure

demos/
├── skill-creator/
│   ├── init-skill.tape          # Initialize a new skill
│   ├── validate-skill.tape       # Validate skill quality
│   └── package-skill.tape        # Package for distribution
├── github-ops/
│   └── create-pr.tape            # Create pull requests
├── markdown-tools/
│   └── convert-docs.tape         # Convert documents
└── generate_all_demos.sh         # Generate all GIFs

🎬 Generating Demos

Prerequisites

Install VHS:

macOS:

brew install vhs

Linux (with Go):

go install github.com/charmbracelet/vhs@latest

Or download from: https://github.com/charmbracelet/vhs/releases

Generate All Demos

./generate_all_demos.sh

This will:

1. Find all .tape files
2. Generate corresponding .gif files
3. Report success/failure for each demo

Generate a Specific Demo

vhs < skill-creator/init-skill.tape

This creates demos/skill-creator/init-skill.gif.

📝 Creating New Demos

VHS Tape File Format

A .tape file consists of commands that VHS executes in a virtual terminal:

# Output configuration
Output demos/my-skill/my-demo.gif

# Terminal settings
Set FontSize 16
Set Width 1400
Set Height 700
Set Theme "Dracula"
Set Padding 20

# Demo script
Type "echo Hello World" Sleep 500ms
Enter
Sleep 2s

Common VHS Commands

Command	Description	Example
Output	Set output file path	Output demos/skill/demo.gif
Set FontSize	Set terminal font size	Set FontSize 18
Set Width/Height	Set terminal dimensions	Set Width 1400
Set Theme	Set color theme	Set Theme "Dracula"
Type	Type text	Type "ls -la"
Type@<speed>	Type with custom speed	Type@500ms "slow typing"
Enter	Press Enter key	Enter
Sleep	Pause execution	Sleep 2s
Ctrl+C	Send Ctrl+C	Ctrl+C

Demo Guidelines

When creating new demos:

1. Keep demos short - Under 30 seconds ideally
2. Use readable font size - 16-18pt minimum
3. Show realistic usage - Practical, real-world examples
4. Add brief comments - Explain what's happening
5. Use consistent theme - Dracula theme recommended
6. Test before committing - Generate and review the GIF

Example: Creating a New Demo

1. Create the tape file:

touch demos/my-skill/my-workflow.tape

2. Write the demo script:

Output demos/my-skill/my-workflow.gif

Set FontSize 16
Set Width 1400
Set Height 700
Set Theme "Dracula"
Set Padding 20

Type "# My Skill Demo" Sleep 500ms Enter
Sleep 1s

Type "echo 'Step 1: Setup'" Sleep 500ms
Enter
Sleep 2s

Type "echo 'Step 2: Execute'" Sleep 500ms
Enter
Sleep 2s

3. Generate the GIF:

vhs < demos/my-skill/my-workflow.tape

4. Review the output:

open demos/my-skill/my-workflow.gif  # macOS
xdg-open demos/my-skill/my-workflow.gif  # Linux

🎨 Themes

VHS supports various themes. We use "Dracula" for consistency, but you can try:

• Dracula (default)
• Nord
• Monokai
• Solarized Dark
• Tokyo Night

📚 Resources

• VHS Documentation: https://github.com/charmbracelet/vhs
• VHS Examples: https://github.com/charmbracelet/vhs/tree/main/examples
• Tape File Syntax: https://github.com/charmbracelet/vhs/blob/main/syntax.md

🔧 Troubleshooting

VHS not found

Ensure VHS is in your PATH:

which vhs

Permission denied

Make the generation script executable:

chmod +x generate_all_demos.sh

Demo generation fails

Check the tape file syntax:

vhs validate < demos/my-skill/my-demo.tape

GIF file too large

Reduce dimensions or duration:

Set Width 1200  # Smaller width
Set Height 600  # Smaller height
Sleep 1s        # Shorter pauses

📝 Adding Demos to README

After generating demos, add them to the main README.md:

### skill-creator - Skill Development Toolkit

<div align="center">
  <img src="./demos/skill-creator/init-skill.gif" alt="Initialize Skill Demo" width="800"/>
</div>

Guide for creating effective Claude Code skills...

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Pro Tip: Demos are automatically regenerated by CI/CD when tape files change (coming soon!).