Playground
A space to experiment with prototypes, tools, and various ideas.
Available Items
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.
No preview
Character Counter
Count characters and tokens in your text with visual breakdown using tiktoken.
New Claude Projects
Interactive visualization of new Claude project features.