There are various account types that can use the API:
Hotelier accounts are bound to a specific property. They have unrestricted access to all API methods for that property.
Source-bound accounts are restricted to a specific set of properties.
Source-bound accounts automatically store the booking source in cases of a booking. Additional, all booking engine links returned by the API include a source tracking parameter.
Travel Agent accounts are restricted to a specific set of properties.
API Methods return net pricing. Rates returned are restricted to Retail/B2B and B2B-only rates.