Log into your Greenhouse account and click the Configure ⚙️ icon on your navigation bar, then click Dev Center.
Click API Credential Management.
Click Create New API Key.
Make the following selections:
API type: Harvest.
Partner: Select the name of the integration that requested the API Key. If the integration isn’t listed, select unlisted vendor. If you’re creating a custom integration, select custom.
Description: Give your API Key a descriptive name.
When finished, click Manage permissions, or click Create to generate the API Key and automatically assign it the appropriate permissions required by the integration.
After the key is created, click Copy. Paste the API Key in a secure location.