1. Log in to your ShipStation account.
2. Click on the gear icon in the top-right corner of the screen to access the Account Settings.
3. Select the API Settings option from the left-hand menu.
4. Your API keys will be displayed in the API Keys section.

You should see two keys: a "Secret Key" and a "Public Key". These keys are used to authenticate our requests to the ShipStation API. Make sure to keep your keys safe and secure, and do not share them with anyone who should not have access to your ShipStation account.

1. Log in to your ShipEngine account.
2. Click on your username in the top-right corner of the screen to access the Account Settings.
3. Select the API Management option from the drop-down menu.
4. If you have not already created an API key, click the "Create API Key" button.
5. Give your API key a name and select the permissions you want to grant it.
6. Click the "Create API Key" button.
7. Your new API key will be displayed on the screen.

This key is used to authenticate our requests to the ShipEngine API. Make sure to keep your keys safe and secure, and do not share them with anyone who should not have access to your ShipEngine account.