Hello! To use the Airbyte API, you need to create an API Key. This key is used to identify and authenticate yourself or your app to make requests to the API. The key must be created at Airbyte’s Developer Portal, which is the UI Airbyte has available to manage all administrative tasks related to the API, such as creating or revoking a new API Key, monitoring your API requests, and viewing some usage metrics. To create a new API Key, you have to click on the ***API Keys*** option in the left panel, and then click on the button ***New Api Key***. Once you click on the button and type the name you’d like to assign to the key, you will be able to see the key value. You can copy it and save it in a file, or you can download the .key file, which will have the key value in it. You will be able to view the key only once, so make sure you store it safely. Please note that the API Key is required for security reasons to use Airbyte’s API. For more details, you can refer to this [tutorial](
https://airbyte.com/tutorials/create-and-monitor-a-data-pipeline-using-the-airbyte-api). However, it's important to note that in a conversation on Slack, it was mentioned that Airbyte uses basic authentication and not API keys. You can refer to this [conversation](
https://airbytehq.slack.com/archives/C021JANJ6TY/p1677068339102509) for more details. Please cross-check this information with the latest documentation or with the Airbyte team to ensure you have the most accurate and up-to-date information.