post https://live.kable.io/api/v1/customers/create
Create a new customer. Call this when a new customer signs up for your API.
You can this API in the LIVE or TEST environment and the outcome will be the same. Customers exist across environments. Handling of subsequent customer requests in a given environment are governed by the environment-specific keys (LIVE or TEST) they use to authenticate.
Note that clients can also be created manually from within the Customers tab of your Kable dashboard.