01The problem
A voice agent that books, follows up or takes payment makes decisions that need to be checked, not just heard. Those decisions should be replayable as tests.
02The approach
- Model permission, opt-out, scheduling, consented follow-up and interrupted audio turns as explicit events with expected outcomes.
- Model priced offers, expiring inventory holds, exact verified-payment events and safe cancellation boundaries for a fictional hotel.
- Publish the 34 scenarios as a dataset with executable reference engines so the same cases can regress a real system.
03The evidence
- Both labs run in the browser as static Hugging Face Spaces with visible tool traces.
- The scenario dataset and reference engines are public.
04Scope & status
Deterministic companions to private projects. They do not run an LLM or telephony provider, send messages, take money or create real bookings; provider and identity checks are stubs.
Public source is available for independent inspection.