Marketplace Scaffold Agent Skill

Scaffolds a new Sitecore Marketplace app using the official SDK. Use when the user wants to create a new marketplace app, start a new Sitecore project, or initialize a marketplace integration.

1.1k tokens

context cost

SKILL.md, read when the skill is used

files

plus reference files

copies elsewhere

how many repositories repackaged it

stars on the repo

on the repository, not the skill itself

Install

one command, takes just this skill from the repository

npx skills add https://github.com/vercel-labs/sitecore-skills --skill marketplace-scaffold

What comes with it

3 233 bytes besides the instruction

references/architecture-guide.md

references/env-template.md

The instruction itself

6 sections, as written by the author

Scaffold a New Sitecore Marketplace App

You are helping the user scaffold a new Sitecore Marketplace app using the official Sitecore Marketplace SDK (v0.4).

Step 1: Gather Requirements

Ask the user the following questions (skip any they've already answered):

App name — What should the app be called? (default: from $ARGUMENTS if provided)
Architecture — Client-side only or full-stack?
Client-side: UI runs entirely in the iframe, communicates via SDK client. Simpler, no server needed.
Full-stack: Includes Next.js API routes/server actions for server-side SDK access. Required for Auth0, server-side mutations, or proxying external APIs.
Authentication — Built-in (default) or Auth0?
Built-in: Zero-config, SDK handles auth automatically. Sufficient for most apps.
Auth0: Required for server-side API access, external service integration, or custom auth flows. Requires Auth0 tenant setup.
Optional packages — Which additional SDK packages?
XM Cloud (xmc): Access Sites, Pages, Authoring, Content Transfer, Search, and Agent APIs
AI Skills (ai): Access Brand Review API for AI-powered content analysis

Step 2: Run the Scaffold Command

Based on answers, construct and run the appropriate command:

# Client-side only (built-in auth)
npx shadcn@latest add https://marketplace-sdk.sitecorecloud.io/r/app-client.json

# Client-side + XMC
npx shadcn@latest add https://marketplace-sdk.sitecorecloud.io/r/app-client.json https://marketplace-sdk.sitecorecloud.io/r/xmc.json

# Client-side + AI
npx shadcn@latest add https://marketplace-sdk.sitecorecloud.io/r/app-client.json https://marketplace-sdk.sitecorecloud.io/r/ai.json

# Client-side + XMC + AI
npx shadcn@latest add https://marketplace-sdk.sitecorecloud.io/r/app-client.json https://marketplace-sdk.sitecorecloud.io/r/xmc.json https://marketplace-sdk.sitecorecloud.io/r/ai.json

# Full-stack (Auth0) — adds server-side SDK support
npx shadcn@latest add https://marketplace-sdk.sitecorecloud.io/r/app-auth0.json

# Full-stack + XMC
npx shadcn@latest add https://marketplace-sdk.sitecorecloud.io/r/app-auth0.json https://marketplace-sdk.sitecorecloud.io/r/xmc.json

# Full-stack + AI
npx shadcn@latest add https://marketplace-sdk.sitecorecloud.io/r/app-auth0.json https://marketplace-sdk.sitecorecloud.io/r/ai.json

# Full-stack + XMC + AI
npx shadcn@latest add https://marketplace-sdk.sitecorecloud.io/r/app-auth0.json https://marketplace-sdk.sitecorecloud.io/r/xmc.json https://marketplace-sdk.sitecorecloud.io/r/ai.json

Important: If the user doesn't have a Next.js project yet, scaffold one first:

npx create-next-app@latest <app-name> --typescript --tailwind --eslint --app --src-dir
cd <app-name>

Step 3: Post-Scaffold Setup

After scaffolding completes:

Create .env.local — See env-template.md for the template. Fill in based on architecture choice.

Configure CSP headers — Add iframe embedding headers to next.config.ts:

const nextConfig: NextConfig = {
  async headers() {
    return [
      {
        source: "/(.*)",
        headers: [
          {
            key: "Content-Security-Policy",
            value: "frame-ancestors 'self' https://*.sitecorecloud.io",
          },
        ],
      },
    ];
  },
};

Install Blok theme (if not already present):

npx shadcn@latest add https://marketplace-sdk.sitecorecloud.io/r/blok-theme.json

Verify setup — Run the dev server and confirm no errors:

npm run dev

Step 4: Explain Next Steps

After successful scaffold, suggest:

Use /marketplace-add-extension to add extension point routes (custom fields, dashboard widgets, etc.)
Use /marketplace-sdk-reference to look up SDK APIs
Use /marketplace-build-component to build UI with the Blok design system
Use /marketplace-deploy when ready to deploy

Reference Files

Architecture Guide — Decision matrix for client-side vs full-stack
Environment Template — .env.local templates per architecture

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How to use it

Copy the folder

Take vercel-labs/marketplace-scaffold from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.

Install what it needs

The instructions reference npx. Without those the skill loads but fails at the first command.