Understanding Read Only API Key

How to use read-only API Key?
Read only API can only be used for fetching resources (Redeem coupon API can be called). These type of API keys are used in frontend or mobile apps.
Creating a read-only API Key is straightforward.
  • Click on Create button and input API name, and check the is_read_only box
  • Copy the API secret (generated only once) somewhere safe and use the API Key to start making API calls.