# Generating an API Key

To access Esper APIs, SDK, or CLI an API key is needed. An additional piece of information called Enterprise ID is needed for APIs and SDK. You can find your Enterprise ID in Company Settings tab or top right corner on Developer Options tab on your dashboard.

To generate your API key, follow the steps mentioned below:

Go to Developer Options on the left panel of your dashboard.
Click Register App on the top right corner.
Enter App name and Description of your app. Click Register Application
A pop up will open to generate an access token. Click Generate token
Copy the token using Copy option and keep it safe. In case you lose your token, it cannot be recovered, you can only Delete or Renew your token.

TIP

Note: A maximum of 5 applications can be registered and only one token can be associated with an application.

If you face any issue in generating the API key, we recommend you to reach out to Developer Support