Skill UI

This skill generates a comprehensive, professional, and print-ready invoice document. It structures the output with sender and recipient blocks, detailed line items, tax breakdowns, subtotals, and full payment instructions. Use this when documenting bills, invoices, or billing statements for any business transaction.

A comprehensive guide to designing transparent, predictable, and developer-friendly usage-based pricing models. Learn which metrics (API calls, compute time, storage) developers accept, how to structure clear pricing pages, and how to avoid confusing or punitive billing practices to maximize adoption and revenue.

Used to verify the actual billing reality, revenue, and pricing mechanics—such as team billing, quotas, and refunds—based on underlying product code, rather than sales documents or simple customer fixes. This skill separates billing facts, customer impact, and the true product implementation logic.