All monetary fields are integer cents
Money is stored as integers in the smallest currency unit (US cents for USD). A $2,847.50 shipment rate goes over the wire as284750. This applies to customerTotalRate, carrierTotalRate, totalAmount, balance, totalTaxAmount, and similar fields.
Float values are rejected at runtime:
Wrapping POST payloads
For most insert endpoints, the request body shape is:{ "inputs": [...] }. If you get a bad-request: Unexpected variable <fieldName> error, your payload likely needs to be wrapped in input.
Authentication header
Send your API key in theAuthorization header — bare or with a Bearer prefix, both
accepted. Keys, scope, environments, and rotation are covered in
Authentication.