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):

Type Slug Description Typical Size

Custom Field custom-field

Inline field in content editor ~300px wide

Dashboard Widget dashboard-widget

Widget on the dashboard ~400x300px

Pages Context Panel pages-context-panel

Side panel in Pages editor ~350px wide, full height

Fullscreen fullscreen

Full-page within Sitecore shell Full viewport

Standalone standalone

Independent page Full 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