Umbraco Extension Registry

This teaches Claude how to work with Umbraco's Extension Registry, the core system that manages all backoffice UI elements. It's focused on runtime operations like registering, excluding, and replacing extensions using umbExtensionsRegistry. The skill emphasizes fetching fresh docs before implementing and includes solid examples for common tasks like hiding default dashboards, replacing built-in actions, and dynamic registration from server data. Most useful when you need to customize the Umbraco backoffice beyond static manifests, especially for conditional features or when you want to modify what Umbraco ships by default. The workflow is straightforward: fetch docs, ask clarifying questions, generate code, explain what changed.

Install to Claude Code

npx -y skills add umbraco/umbraco-cms-backoffice-skills --skill umbraco-extension-registry --agent claude-code