![]()

#### 

Sitecore team just announced some huge updates for the Marketplace.

#### Blok Design System reaches General Availability (GA)

Sitecore is thrilled to announce that new [Blok](https://blok.sitecore.com) design system based on Tailwind and Shadcn has officially moved out of Beta and reached General Availability!

This milestone makes Blok the recommended and future-proof approach for building Sitecore Marketplace interfaces and AI-driven experiences. From now on, Blok is the way forward for all new projects and UI modernization efforts when building apps which should look and behave like Sitecore.

##### Features

- Updated home page: `shadcn/ui` is not the default way to start
- [Primitives](https://blok.sitecore.com/primitives) section contains all available components together with code (which you can easily copy-paste into your app)
- [MCP Server](https://blok.sitecore.com/mcp) - use [shadcn MCP Server](https://ui.shadcn.com/docs/mcp) directly with Sitecore Blok Registry

##### Why GA matters

- **Production ready** - Blok is now ready for production use
- **Consistent, scalable design language** - Blok provides a consistent, scalable design language that can be used across all Sitecore Marketplace apps
- **Enhanced developer experience** - Blok provides a rich set of tools and features to help developers build and maintain their apps

*Bonus*. If you are just starting to build a new app, you can use [Quick start (CLI)](https://doc.sitecore.com/mp/en/developers/sdk/0/sitecore-marketplace-sdk/quick-start--cli-.html) to scaffold your app, so Blok will be already included, e.g.:

```
npx shadcn@latest add https://blok.sitecore.com/r/marketplace/next/quickstart.json
```

Read more in the [changelog](https://developers.sitecore.com/changelog/sitecoreai/05122025/blok-design-system-reaches-general-availablity-%28ga))

#### App Permissions and New Event Subscriptions

Permissions

- Opening pop-ups and in-app links. (e.g. open link with `target="_blank"`)
- Copy content to the user's clipboard. (using `navigator.clipboard.writeText`)
- Reading content from the user's clipboard. (using `navigator.clipboard.readText`)

##### Apply New Permissions (for existing apps)

Ensure you update **Permissions** in the **App Studio**.

![app permissions](https://www.brimit.com/-/media/images/blog/sitecoreai/marketplace-updates/app-permissions.png)

After that you need to **update** your app in the **My Apps** section.

![Update app](https://www.brimit.com/-/media/images/blog/sitecoreai/marketplace-updates/update-app.png)

![Confirm application update](https://www.brimit.com/-/media/images/blog/sitecoreai/marketplace-updates/update-app-confirm.png)

##### Events

[Marketplace SDK Version 0.3.0](https://www.npmjs.com/package/@sitecore-marketplace-sdk/client) lets you subscribe to [page layout](https://doc.sitecore.com/mp/en/developers/sdk/latest/sitecore-marketplace-sdk/subscribe-to-page-layout-changes.html) and [fields changes](https://doc.sitecore.com/mp/en/developers/sdk/latest/sitecore-marketplace-sdk/subscribe-to-field-changes.html).
It is valid in scope of **Page Builder** extension: you can react to page layout and page fields changes.

Read more in the [changelog](https://developers.sitecore.com/changelog/marketplace/10122025/introducing-marketplace-app-permissions-and-new-event-subscriptions-in-the-sdk)

#### Conclusion

These updates represent significant progress in the Marketplace App Development ecosystem. 

With **Blok** now production-ready, featuring clear documentation and comprehensive examples, developers have a solid foundation for building consistent interfaces.

Furthermore, the introduction of **App Permissions** demonstrates Sitecore's commitment to security and privacy, while effectively addressing previous technical limitations.

###### More From Author

[##### Sitecore Marketplace SDK Integration with Vercel AI SDK
February 25, 2026](https://www.brimit.com/blog/sitecore-marketplace-sdl-integration-with-vercel-ai-sdk)[##### SitecoreAI, Marketer MCP, Agents API, Marketplace — Sitecore Symposium 2025 Recap
November 11, 2025](https://www.brimit.com/blog/sitecoreai-mcp-marketplace-symposium2025-recap)[##### Sitecore Content Hub Administrator Certification – Practice Guide
October 27, 2025](https://www.brimit.com/blog/sitecore-content-hub-administrator-certification-exam)

###### Author

[!\[Igor Zharikov - Senior Sitecore Developer, Sitecore MVP\](https://www.brimit.com/-/jssmedia/feature/blogs/authors/igor-zharikov-2.jpg?h=700&iar=0&w=700&hash=292A84E8CB3E5CE57CA743385CFB1464)
Igor Zharikov
Sitecore MVP / Senior Sitecore Developer](https://www.brimit.com/blog/author?authors=Igor%20Zharikov)

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![](https://bat.bing.net/action/0?ti=187017043&tm=gtm002&Ver=2&mid=7858e8c7-4be7-42b5-ae11-bf5a9a4442ed&bo=2&gtm_tag_source=1&pi=0&lg=en-US&sw=800&sh=600&sc=24&nwd=1&tl=Sitecore%20Marketplace%20Updates%20(December%202025)&kw=Marketplace,Sitecore&p=https%3A%2F%2Fwww.brimit.com%2Fblog%2Fsitecoreai-marketplace-december-updates&r=&lt=292&evt=pageLoad&sv=2&asc=D&cdb=AQAY&rn=975249)