Bantai

Hey Product Hunt 👋 I’m the creator of Bantai — a TypeScript-first policy evaluation library for rule-based validation and decision-making. I built this after repeatedly needing a clean way to express rules and policies as code, without hard-wiring business logic all over services. Bantai focuses on: Strong TypeScript typing from context → rule → decision Composable, reusable policies (not just auth) Framework-agnostic usage (API, backend, edge, workers) Use cases like access control, rate limiting, feature gating, and validations It’s open source and still evolving, so feedback really matters 🙏 I’d love to hear: Where do you currently implement rules/decisions in your stack? What problems do existing policy engines not solve well for you? Happy to answer any questions — thanks for checking it out! 🚀