Well yes... and no. It depends which API Suite product specifically.
Both the SCHEDULES API and the TRACK API do not require any IATA CASS in the request body. Any airfreight player can start using these API and immediately gain benefits in terms of data coverage & quality and process efficiency.
The RATES & BOOK API will require you to include your IATA and CASS numbers in the request. These 2 values will be instrumental in returning the right rates from our connected airlines.
If you call our API without an IATA CASS number, airlines will not return any rate, simply because they will not be able to bill you after the AWB departure.
We're actively looking to implement a way to lift this restriction and allow you to use this API irrespective of your IATA CASS number though.
We hope you find this article useful!