In high-volume scenarios for Shopify Plus accounts, Mechanic's performance can be improved by creating a private Shopify app, configured for the permissions Mechanic requires. Because this private app represents the store owner's explicit control and intent, Shopify can – at the owner's request – grant it a higher API usage limit. By providing Mechanic with this private app's API password (also known as the API secret key, or token), you can extend this higher limit to Mechanic.
You can find this setting in your Mechanic account manager.
Before adding your API password, you must ensure that the private app has every access scope that Mechanic requires. A list of current required access scopes is provided just below the password field.
Once configured, Mechanic will use your custom API password for every Shopify interaction, except for Admin API calls that require permissions that private apps cannot access (i.e. calls to Publication resources).