# Video Commerce for developers > The PROVEI.AI code already loads the video showcases. Learn when to use the Video Commerce-only code, where to copy it and how it handles SPAs and CSP. Canonical: https://provei.ai/ajuda/en/video-commerce/para-desenvolvedores/ Last updated: 2026-10-24 Translation (pt-BR): https://provei.ai/ajuda/video-commerce/para-desenvolvedores.md The PROVEI.AI code, the same one the try-ons use, already loads the video showcases you published in Video Commerce. The Video Commerce-only code is an alternative for stores that use only the videos and can’t have the full code. > **Note:** Video Commerce is turned on by Provei. Contact support to turn it on. See [Video Commerce](https://provei.ai/ajuda/en/video-commerce/). ## Which code to use - **Your store has a Provei try-on**: the try-on code already in your theme loads the showcases. No other code needed. - **Your store will use only the videos**: install the PROVEI.AI code from the **Instalação** (Installation) screen. With no active try-on, it loads only Video Commerce. See [Install Provei in your store](https://provei.ai/ajuda/en/instalacao/) and [Install modes](https://provei.ai/ajuda/en/desenvolvedores/modos-de-instalacao/). - **Your store can’t have the full code**: use the Video Commerce-only code below. ## The Video Commerce-only code Copy it from **Video Commerce › Instalar › Instalar de outro jeito › Avançado** (Install › Install another way › Advanced), in the **Só o Video Commerce** (Video Commerce only) block, or from **Instalação** (Installation), in the **Avançado: só o Video Commerce** (Advanced: Video Commerce only) block. It looks like this, with your account ID: ```html ``` Paste it in the layout used by every page, right before ``. Showcases show only on the pages and in the spots chosen for each showcase. Putting both codes on the same page doesn’t duplicate the videos: the second one sees that the first has already loaded and does nothing. ## Page changes without a reload Video Commerce watches for changes in the page content. In stores that change pages without reloading, it checks the new URL and shows the showcases set up for it. See [SPA and headless stores](https://provei.ai/ajuda/en/desenvolvedores/lojas-spa/). ## Content Security Policy If the store uses a `nonce` in its Content Security Policy, add the `nonce` to the script tag. Video Commerce passes the same `nonce` on to the script it loads. The videos come from dedicated video hosts. To find out which ones to allow in your policy, contact support. See [CSP and domains](https://provei.ai/ajuda/en/desenvolvedores/csp-e-dominios/). ## Place a showcase with a selector Each showcase can be placed with a CSS selector and have its own CSS, under **Avançado (para desenvolvedores)** (Advanced, for developers) in the showcase editor. Use it only when the ready-made spots don’t work with your theme. See [Advanced (for developers)](https://provei.ai/ajuda/en/video-commerce/onde-aparece/#advanced-for-developers). ## Frequently asked questions ### I already have the try-on code in my store. Do I need the Video Commerce code? No. The PROVEI.AI code, the same one the try-on uses, already loads the video showcases. Pasting both doesn't duplicate the videos. ### Where do I copy the Video Commerce-only code? In the dashboard, under Video Commerce › Instalar › Instalar de outro jeito › Avançado (Install › Install another way › Advanced), in the Só o Video Commerce (Video Commerce only) block. It also shows on the Instalação (Installation) screen, in the Avançado: só o Video Commerce block. ## See also - [Video Commerce: installation and cart](https://provei.ai/ajuda/en/video-commerce/instalacao/) - [CSP and domains to allow in your store](https://provei.ai/ajuda/en/desenvolvedores/csp-e-dominios/) - [Try-on in SPA and headless stores](https://provei.ai/ajuda/en/desenvolvedores/lojas-spa/) - [Developers: integrate the try-on](https://provei.ai/ajuda/en/desenvolvedores/)