Go to projectaanvraag.uitdatabank.be and apply for your personal API key.
Make sure to use the correct API key with the correct [environment]({% link content/entry_api_3/latest/authentication/authentication-baseUrl.md %}).
When your API Client wants to use the [Refresh Token Flow]({% link content/entry_api_3/latest/authentication/authentication-jwt-refreshToken.md %}), your apiKey needs a specific permission. Contact publiq vzw for the configuration settings.