Hey PH — builder here, launching a gamified Claude API workbook today

Hi everyone! I'm Felipe, a developer who kept watching my Claude API bill climb every month — hit $340 and decided to actually fix it instead of just accepting it.

I spent a few weeks auditing every API call and found the same 3 patterns eating 75%+ of my costs: no prompt caching, wrong model selection, and paying for silence on non-streaming calls.

So I gamified the whole learning process. You play as a developer auditing API costs across 5 missions. Real code, real numbers, a sarcastic owl named GRIM who judges your choices.

Launching today: https://www.producthunt.com/posts/rpg-materia-grimoire-academy

Free to play. Pay what you want if it saves you money. Happy to answer any questions about the Claude API optimizations!