# Physical Validation transport laboratory
Instructions revision: physval-lab-20261111-r1

Test-only service. No supplier outreach, purchases, or real email delivery.
No login or plugin is required by this server. Use an HTTP client capable of POST.
POST /probe with JSON {"run":"your-reference"} returns an echo and receipt; it creates no experiment request.
POST /requests with JSON {"email":"linus@halmoslabs.com","description":"integration test only","run":"your-reference"} and Idempotency-Key header creates a pending TEST request.
A receipt is not proof of email ownership. Requests remain pending until simulated inbox verification. Only the operator has access to the private simulated inbox.
POST /requests/{id}/verify with JSON {"code":"six digits from the simulated inbox"} tests verification. Never guess codes.
GET /probe?run=your-reference is a read-only connectivity check, never a submission.
GET cannot create requests or verify emails. Report an actual receipt only if returned by POST.