> ## Documentation Index > Fetch the complete documentation index at: https://docs.mattildapayments.com/llms.txt > Use this file to discover all available pages before exploring further. # commercetools Configuration Within the commercetools Merchant Center you can access the integration configuration by selecting **Gr4vy** in the side navigation. Within this menu there are three configuration sections. Config ## API Configuration This section contains the basic setup of the plugin. You will need to fill in the **Gr4vy ID**, **Private Key**, and **Environment** fields based on your environment. API Configuration ## Options This section allows you to further configure the behavior of the integration. Options ## Theme Control of the theming of the Gr4vy Embed component used in storefront. See [Embed theming](/guides/payments/embed/theming) for more details. Theming