---
name: marketplace-add-extension
description: Adds a new extension point route to a Sitecore Marketplace app. Use when the user wants to add a custom field, dashboard widget, context panel, fullscreen…
---

# marketplace-add-extension

Adds a new extension point route to a Sitecore Marketplace app. Use when the user wants to add a custom field, dashboard widget, context panel, fullscreen…

# marketplace-add-extensionby vercel
Adds a new extension point route to a Sitecore Marketplace app. Use when the user wants to add a custom field, dashboard widget, context panel, fullscreen…

`npx skills add https://github.com/vercel-labs/sitecore-skills --skill marketplace-add-extension`Download ZIPGitHub

## Add an Extension Point Route

You are helping the user add a new extension point to their Sitecore Marketplace app.

## Step 1: Determine Extension Type

Ask the user which type (or infer from $ARGUMENTS):

TypeSlugDescriptionTypical SizeCustom Field`custom-field`Inline field in content editor~300px wideDashboard Widget`dashboard-widget`Widget on the dashboard~400x300pxPages Context Panel`pages-context-panel`Side panel in Pages editor~350px wide, full heightFullscreen`fullscreen`Full-page within Sitecore shellFull viewportStandalone`standalone`Independent pageFull viewport

## Step 2: Generate the Route

Create the route at `app/<extension-type>/page.tsx` (or a custom path the user prefers).

See extension-types.md for complete boilerplate templates for each extension type.

## Step 3: Register in Developer Portal

Remind the user to register the extension point in the Sitecore Developer Portal:

* Go to Developer Portal → Your App → Extension Points

* Click "Add Extension Point"

* Select the type and set the route path (e.g., `/custom-field`)

## Step 4: Suggest Next Steps

* Use `/marketplace-build-component` to build out the UI

* Use `/marketplace-sdk-reference` to look up available queries/mutations for this extension type

* Use `/marketplace-add-xmc` if the extension needs XM Cloud data

## Reference Files

* Extension Types — Boilerplate templates for each extension type

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**Source**: https://github.com/vercel-labs/sitecore-skills/tree/HEAD/.claude/skills/marketplace-add-extension
**Author**: vercel
**Discovered via**: mcpservers.org