billing-automation

Quick Review

Excellent billing automation skill with comprehensive coverage of subscription lifecycle, dunning management, proration, tax calculation, and invoice generation. The description clearly indicates when to use this skill (SaaS billing, invoicing, dunning), and a CLI agent can easily understand its capabilities. Task knowledge is extensive with detailed Python implementations covering all major billing scenarios including edge cases. Structure is very well-organized with clear sections, code examples, and logical flow from concepts to implementation. Novelty is moderate-to-good: while basic billing logic could be implemented by a CLI agent, the comprehensive dunning workflows, complex proration algorithms, tax jurisdiction handling, and integrated subscription state management would require significant tokens and domain expertise to implement correctly. The skill meaningfully reduces complexity for production-grade billing systems. Minor point: some referenced files in Resources section are assumed present per instructions.