Integration Guide · Updated February 18, 2026 · 5 min read
Overview
Napster Agents integrates with Shopify's Storefront MCP (Model Context Protocol) server to give your customers an AI-powered shopping experience. Through this connection, an AI assistant can search your product catalog, manage shopping carts, and guide shoppers to checkout — all within a natural conversation.
✅ No setup required. Napster Agents connect to your store's existing storefront data automatically through Shopify's built-in MCP endpoint. No apps to install, no code to write, and no configuration needed in your Shopify admin.
How it works
When a customer uses Napster Agents to shop at your store, here's what happens:
1. Customer asks a question A shopper browsing your store asks about products through the Napster Agents AI assistant — just like talking to a knowledgeable store employee.
2. AI searches your catalog The assistant queries your store's Storefront MCP server to find matching products, complete with pricing, images, descriptions, and direct links.
3. Cart is managed The assistant can create a cart, add items, update quantities, remove products, and share a checkout link — all within the conversation.
4. Customer completes checkout The shopper is directed to your store's native Shopify checkout to finalize their purchase using your configured payment methods and shipping options.
Everything runs through Shopify's secure infrastructure. Your product data, pricing, and inventory are served in real time — no syncing or data duplication.
Product catalog search
The search_shop_catalog tool lets the AI assistant search your entire product catalog on behalf of the customer. It supports natural-language queries, so shoppers can describe what they want the way they'd ask a real person.
What customers can do
- Search for products by name, category, or description
- Ask for recommendations based on preferences or use cases
- Browse results that include product names, prices, images, and direct links to your store
What's returned to the customer
| Data | Description |
|---|---|
| Product Name | The title of the matching product |
| Price & Currency | The current price in your store's currency |
| Variant ID | The specific variant (used internally for cart operations) |
| Product URL | Direct link to the product page on your storefront |
| Image URL | The product's featured image |
| Description | The product description from your Shopify admin |
Example interaction
Customer: "I'm looking for organic coffee beans, preferably fair trade."
Napster Agents AI: "I found 3 options in the store! Here are the top matches:
- ☕ Fair Trade Organic Blend — $18.99
- ☕ Single Origin Ethiopian — $22.50
- ☕ Decaf Organic Roast — $16.99
Would you like to add any of these to your cart?"
Shopping cart management
Napster Agents provides full cart functionality through two tools: get_cart and update_cart.
Retrieving the cart
get_cart retrieves the current contents of a customer's cart, including all items, quantities, prices, and a direct checkout URL. The AI assistant can show customers their cart at any point during the conversation.
IMPORTANT: the cart lives on Napster Agents, it is not shared with Shopify.
Updating the cart
update_cart handles all cart modifications:
- Create a new cart — When a customer adds their first item, a cart is created automatically.
- Add items — Products found via catalog search are added using their variant ID.
- Update quantities — Customers can change the quantity of any item in the cart.
- Remove items — Setting a quantity to 0 removes the item entirely.
Checkout
When the customer is ready to buy, the assistant provides a direct link to your store's Shopify checkout. Payment is processed through your standard checkout flow, including any customizations, payment methods, and shipping options you've configured.
Example interaction
Customer: "Add 2 bags of the Fair Trade Organic Blend to my cart."
Napster Agents AI: "Done! I've added 2× Fair Trade Organic Blend ($18.99 each) to your cart. Cart total: $37.98. Ready to checkout, or keep browsing?"
Customer: "Actually, make it 3 bags."
Napster Agents AI: "Updated! Your cart now has 3× Fair Trade Organic Blend. New total: $56.97. Here's your checkout link when you're ready →"
Your store's MCP endpoint
Every Shopify store has a dedicated MCP endpoint that Napster Agents connect to automatically. No configuration is required.
Endpoint format
https://{your-store}.myshopify.com/api/mcpReplace {your-store} with your Shopify domain. For example, if your store is cool-beans-coffee.myshopify.com, your endpoint is:
https://cool-beans-coffee.myshopify.com/api/mcp
Key details
- No authentication required — The endpoint is publicly accessible, similar to your storefront. It only exposes data already visible on your online store.
- Real-time data — Changes you make in your Shopify admin are immediately reflected.
- Secure by design — Read-only catalog access plus standard cart operations. No admin access, no customer account data, no order history.
Feature reference
The table below summarizes all Storefront MCP tools and their status in the Napster Agents integration:
| Tool | What it does | Status |
|---|---|---|
search_shop_catalog |
Searches your product catalog using natural-language queries and returns matching products with full details. | ✅ Active |
get_cart |
Retrieves current cart contents including items, quantities, and checkout URL. | ✅ Active |
update_cart |
Creates carts, adds items, updates quantities, and removes items. | ✅ Active |
search_shop_policies_and_faqs |
Answers questions about store policies, FAQs, and general store information. | ❌ Not used |
⚠️ Policy & FAQ search is not active. The
search_shop_policies_and_faqstool is available on Shopify's Storefront MCP server but is not currently used by Napster Agents. This capability may be added in a future update.
Frequently asked questions
Do I need to install anything? No. The Storefront MCP endpoint is built into every Shopify store. Napster Agents connect to it automatically — no apps, no code, no admin configuration needed.
Will this affect my existing online store? Not at all. The MCP endpoint operates alongside your storefront. It reads the same publicly visible product data. It doesn't modify store settings, themes, or customer data.
What product data is shared? Only data already publicly visible on your storefront: product names, descriptions, prices, images, variant information, and URLs. No private or admin-only data is exposed.
Can the AI assistant process payments? No. The assistant helps customers build their cart and then directs them to your standard Shopify checkout. All payment processing happens through your existing checkout flow.
How quickly are product changes reflected? Changes are reflected in real time. When you update a product's price, title, description, or availability in your Shopify admin, those changes are immediately available through the MCP endpoint.
Is this secure? Yes. The endpoint provides read-only catalog access and standard cart operations. It cannot access your admin panel, customer accounts, order history, or any private data.
Getting help
If you have questions about the Napster Agents integration or need assistance:
- Shopify Help Center — For general store management and configuration questions.
- Shopify Developer Docs — For technical details about the Storefront MCP server, visit shopify.dev/docs/apps/build/storefront-mcp/servers/storefront
- Napster Agents Support — For questions specific to the Napster Agents integration and AI shopping experience.