
Umbraco Quickstart
- 289 installs
- 26 repo stars
- Updated August 1, 2026
- umbraco/umbraco-cms-backoffice-skills
umbraco-quickstart is a Claude agent skill that provisions an Umbraco CMS instance, creates a backoffice extension, and registers it in one slash command for developers starting Umbraco extension development on .NET.
About
umbraco-quickstart is a Claude Code skill from umbraco/umbraco-cms-backoffice-skills (version 1.1.0) that sets up everything needed for Umbraco extension development in a single invocation. The /umbraco-quickstart command accepts an Umbraco project name, extension name, and optional --email and --password credentials, defaulting to admin@test.com and SecurePass1234 when omitted. Allowed tools include Bash, Read, Write, Edit, Glob, and Grep so the agent can scaffold the CMS instance, generate the extension, and wire registration automatically. Developers reach for umbraco-quickstart when starting a new Umbraco backoffice extension without manually repeating instance creation, extension boilerplate, and manifest registration steps. Example usage: /umbraco-quickstart MyUmbracoSite MyExtension --email a@a.co.uk --password Admin123456. The skill is user-invocable and targets .NET developers building custom Umbraco CMS backoffice UI extensions who want a repeatable local bootstrap path inside Claude Code sessions.
- umbraco-quickstart
- AI & Agent Building
- AI-coding skill
Umbraco Quickstart by the numbers
- 289 all-time installs (skills.sh)
- Ranked #2,305 of 16,546 AI & Agent Building skills by installs in the Skillselion catalog
- Data as of Aug 2, 2026 (Skillselion catalog sync)
npx skills add https://github.com/umbraco/umbraco-cms-backoffice-skills --skill umbraco-quickstartAdd your badge
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| Installs | 289 |
|---|---|
| repo stars | ★ 26 |
| Last updated | August 1, 2026 |
| Repository | umbraco/umbraco-cms-backoffice-skills ↗ |
How do you bootstrap an Umbraco backoffice extension project?
Helps with ai & agent building tasks.
Who is it for?
.NET developers starting Umbraco CMS backoffice extension work who need one-command instance, extension, and registration scaffolding.
Skip if: Production Umbraco deployments, content migration from other CMS platforms, or frontend frameworks unrelated to Umbraco backoffice extensions.
When should I use this skill?
A developer starts Umbraco extension development and needs /umbraco-quickstart to create the instance, extension, and registration in one step.
What you get
Running Umbraco CMS instance, generated backoffice extension project, and registered extension wired into the Umbraco backoffice.
- Umbraco CMS instance
- backoffice extension project
- extension registration config
By the numbers
- Version 1.1.0 with user-invocable slash command support
- Allows 6 agent tools: Bash, Read, Write, Edit, Glob, and Grep
- Bundles 3 setup steps: instance creation, extension generation, and registration
Files
Umbraco Quickstart
Sets up everything needed for Umbraco extension development in one command.
Usage
# Full setup with custom credentials
/umbraco-quickstart MyUmbracoSite MyExtension --email a@a.co.uk --password Admin123456
# With default credentials (admin@test.com / SecurePass1234)
/umbraco-quickstart MyUmbracoSite MyExtension
# Just Umbraco instance name (will prompt for extension name)
/umbraco-quickstart MyUmbracoSite
# No arguments (will detect existing or prompt for names)
/umbraco-quickstartWorkflow
1. Parse arguments
- First argument: Umbraco project name (e.g., "MyUmbracoSite")
- Second argument: Extension name (e.g., "MyExtension")
- `--email` (optional): Admin email (default:
admin@test.com) - `--password` (optional): Admin password (default:
SecurePass1234)
If arguments not provided, check what exists and prompt for missing names.
2. Check what exists
Check for Umbraco instance:
find . -name "*.csproj" -exec grep -l "Umbraco.Cms" {} \; 2>/dev/null | head -5Check for extension projects:
find . -name "umbraco-package.json" 2>/dev/null | head -103. Take action
If no Umbraco instance:
- Use the provided name (first argument) or prompt for one
- Create with
/package-script-writer [ProjectName]
If no extension:
- Use the provided name (second argument) or prompt for one
- Create with
/umbraco-extension-template [ExtensionName]
If extension not registered:
- Register with
/umbraco-add-extension-reference [ExtensionName]
4. Warn about optional resources
Check extended workspace (including /add-dir directories) and warn if missing:
If CMS source not found:
⚠ Umbraco CMS source not found in extended workspace.
For better code generation, add it:
git clone https://github.com/umbraco/Umbraco-CMS.git
/add-dir /path/to/Umbraco-CMS/src/Umbraco.Web.UI.ClientIf UUI source not found:
⚠ UUI library source not found in extended workspace.
For UI component reference, add it:
git clone https://github.com/umbraco/Umbraco.UI.git
/add-dir /path/to/Umbraco.UI/packages/uuiIf testing skills not installed:
⚠ Testing skills not installed.
To add testing capabilities:
/plugin install umbraco-cms-backoffice-testing-skills@umbraco-backoffice-marketplace5. MANDATORY: Enter Plan Mode
Do NOT proceed to building until this step is complete.
1. Tell the user setup is complete and show the login credentials 2. Read PRE-BUILD-PLANNING.md from the umbraco-backoffice skill 3. Ask the user what they want to build
✅ Setup complete! Your extension is ready.
Login: admin@test.com / SecurePass1234
What would you like to build? Describe your idea and I'll help you plan the implementation.
Examples:
- "A dashboard that shows recent content changes"
- "A property editor for picking colours"
- "A tree in Settings for managing custom data"When the user describes what they want:
1. Enter plan mode with `/plan` 2. Follow the PRE-BUILD-PLANNING.md workflow:
- Draw ASCII wireframe of the UI
- Label extension types needed (section, dashboard, workspace, etc.)
- Identify UUI components
- Map data flow (contexts, APIs)
3. Identify which sub-skills to invoke 4. Include these MANDATORY sections in the plan document (they will be actioned after plan approval):
## Pre-Build Setup
- [ ] Load `/umbraco-backoffice` skill for best practices and examples
## Implementation
[Your implementation steps here - skills to invoke, files to create]
## Post-Build Validation (REQUIRED - DO NOT SKIP)
### Step 1: Initial Build
- [ ] Run `npm run build` in extension directory
- [ ] Verify build completes without errors
### Step 2: Code Review
- [ ] Spawn `umbraco-extension-reviewer` agent
- [ ] Fix all Critical/High severity issues
### Step 3: Rebuild (if fixes were made)
- [ ] Run `npm run build` again
- [ ] Verify build still succeeds
### Step 4: Restart Umbraco
- [ ] Stop the running Umbraco instance
- [ ] Run `dotnet run` to restart
- [ ] Wait for startup to complete
### Step 5: Browser Validation
Check if browser automation is available (any of: `dev-browser` skill, Playwright MCP, Claude computer use).
If browser automation IS available:
- [ ] Navigate to backoffice login (http://localhost:5000/umbraco)
- [ ] Login with credentials
- [ ] Navigate to extension location
- [ ] Verify: no console errors, UI renders, interactions work
- [ ] Take screenshot of working extension
If NO browser automation available, output manual testing steps for user.5. Exit plan mode only when wireframe AND all validation sections are in the plan
⚠️ Do NOT generate code until planning is complete and approved by the user.
Goal
Get the user to a working, validated extension. Follow the workflow: PLAN → BUILD → VALIDATE. Don't just report - take action.
Default Credentials
When creating an Umbraco instance, these defaults are used:
- Email:
admin@test.com - Password:
SecurePass1234
These are safe for local development and don't contain special characters that cause escaping issues.
Example
/umbraco-quickstart MyUmbracoSite MyDashboardThis will: 1. Create Umbraco instance (e.g. "MyUmbracoSite") if not exists 2. Create extension (e.g. "MyDashboard") 3. Register the extension with the Umbraco project 4. Warn about missing CMS/UUI source if applicable 5. Enter plan mode to design the extension (wireframe, extension types, validation steps) 6. Build using identified sub-skills 7. Run npm run build 8. Run umbraco-extension-reviewer and fix issues 9. Rebuild if fixes were made 10. Restart Umbraco 11. Browser validation (automatic if browser automation available, manual steps otherwise)
Login with: admin@test.com / SecurePass1234
Related skills
How it compares
Use umbraco-quickstart for local Umbraco extension bootstrap; use general .NET scaffolding skills when not targeting Umbraco CMS backoffice development.
FAQ
What does umbraco-quickstart create?
umbraco-quickstart creates a running Umbraco CMS instance, generates a named backoffice extension project, and registers that extension in the Umbraco backoffice. Version 1.1.0 consolidates these three setup steps into a single user-invocable /umbraco-quickstart slash command.
Which arguments does umbraco-quickstart accept?
umbraco-quickstart accepts [UmbracoProjectName] [ExtensionName] with optional --email and --password flags for admin login. When credentials are omitted, defaults are admin@test.com and SecurePass1234, as shown in the skill argument-hint and usage examples.
Which tools does umbraco-quickstart use?
umbraco-quickstart allows Bash, Read, Write, Edit, Glob, and Grep so the agent can execute scaffolding commands, read templates, write project files, and locate registration points. The skill is user-invocable for direct developer invocation from Claude Code.