Most SaaS products don’t fail because of missing features. They fail because decision logic is undefined. This kit gives you production-ready decision systems for how your SaaS behaves when: Access must be enforced Billing fails or changes Trials end or convert Abuse occurs Edge cases collide You get deterministic logic for access control, pricing, trials, and abuse handling — written as decision specs + TypeScript logic. No UI components. No Stripe tutorials. No framework lock-in. If your system currently answers “it depends,” this product eliminates that ambiguity. Best for: indie SaaS founders, solo devs, early startup engineers shipping MVP → v1 → paid users. Not for: beginners, no-code builders, side-hustle audiences. This product won’t make your SaaS successful. It will make your SaaS behave correctly when success puts it under pressure.