API authentication is an essential part of obtaining access to QuestionPro's API services. To ensure the security and confidentiality of your data, we utilise the API key authentication method. Your API key can be managed through your QuestionPro Customer Experience account.
Read: How to generate API Key?

In order to authenticate you can use the standard api-key parameter. It has to be passed as a header string parameter.

Note: Please do not share your secret API keys in publicly accessible areas such GitHub, client-side code, and so forth.