This lets Claude build custom preview apps for Umbraco's backoffice, the tools that show up in the content preview menu when editors are checking their work. Think device simulators, accessibility checkers, or SEO analyzers. The skill fetches current docs from docs.umbraco.com and generates the TypeScript manifest plus Lit element needed to hook into the preview system. It's narrow in scope but useful if you're extending Umbraco's editing experience. The examples show how to toggle preview modes and resize iframes, which covers most preview app patterns. One caution: you need to understand the preview iframe context to do anything meaningful beyond basic UI.
npx -y skills add umbraco/umbraco-cms-backoffice-skills --skill umbraco-preview-app-provider --agent claude-codeInstalls into .claude/skills of the current project.
Select a file.
wshobson/agents
github/awesome-copilot
github/awesome-copilot