The full reference is coming soon. In the meantime, here's the shape of the API.
All requests require a Bearer token in the Authorization header. Test keys are prefixed mt_test_, production keys with mt_live_.
GET /v1/vehicles/by-plate?plate=… and GET /v1/vehicles/by-vin?vin=… return a normalized vehicle object.
Test (sandbox): free, rate-limited, deterministic fixtures. Production: live, billed per query at €0.08.