If you're connecting another application (like Zapier) to Streak, you'll need an API key to authorize that application's access and connection with your account.
Your API key has all of the same privileges that you have while accessing Streak. Any pipelines you have access to in your Streak account will also be available from the API. Be sure to keep your API keys secret and only share it with applications you consider safe.
If you feel or suspect an API key of yours has been compromised, you can delete it and create a new one.
Generate a new API key
Click on the Streak icon in Gmail's top bar
Select the Integrations option. This will open a window where you can view existing integrations and create new API keys.
Select the Custom Integrations option from the sidebar window and click the button to Create new key.