Vendor Agent Minimum Contract
- GET /health returns availability and protocol version.
- GET /capabilities returns capability keys, pricing and evidence profile.
- POST /execute accepts signed MonetiAgents execution requests.
- Responses must include resultEvidence and meteringEvidence.
- Vendors must deduplicate by Idempotency-Key.
- Vendors must not self-declare certification; certification is issued by MonetiAgents.