Show HN: An authority gate for AI-generated customer communications

Many teams now allow AI systems to draft customer-facing messages across support, CRM, and billing workflows. This introduces a specific failure mode: AI can generate text that constitutes an irreversible business commitment (refunds, credits, billing changes, contractual promises). Once emitted, the commitment exists. Detection after delivery is irrelevant. This project implements a hard authority boundary. Model -------- AI systems propose messages. They do not decide whether those messages are allowed to commit the company. A gateway enforces that decision. AI drafts message ↓ Authority Gateway ↓ Send | Block → Approval Behavior --------- For each outbound message: Inspect text for commitment signals Classify outcome as reversible or irreversible If reversible → allow If irreversible → block and require explicit approval Log decision and evidence No attempt is made to assess advice quality, intent, or correctness. Only enforceability is considered. API surface ------------ /v1/messages/send Enforces authority on outbound messages /v1/support/messages/decide Decision-only endpoint for support systems Returns structured reasons and a safe fallback reply Properties ---------- Deterministic enforcement Idempotent execution Explicit approval for irreversible actions No reliance on prompt discipline or training hygiene No agent autonomy This is a sandbox implementation to test whether a narrow authority layer is useful in practice. Feedback welcome from teams already routing AI-generated messages into real customer workflows.