Playground
A space to experiment with prototypes, tools, and various ideas.
- • Iterate quickly without external services
- • Work locally with full control
- • Easy to share experiments and tools
- • Each item isolated but served from same URL
- 1. Create a new directory: mkdir playground/my-experiment
- 2. Add index.html (and any other files)
- 3. Access at /playground/my-experiment
Each directory is completely isolated.
Available Items
New Claude Projects
A prototype demonstrating new Claude Projects features and workflows.
Character Counter
Count characters and tokens in your text with visual breakdown using tiktoken.
Format Tokenization Exploration
Compare token usage across CSV, JSON (pretty/compressed), YAML, and TOON formats with visual token highlighting.
Immunity
A retro-inspired virus elimination puzzle game. Match colored capsules to clear viruses in this homage to classic puzzle gameplay.