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A 5-Minute Grok Commerce Experiment with a Custom MCP

#ai #tutorial #opensource #webdev

This is a reproducible experiment, not a concept mockup. Add WebAZ to your own Grok account and test whether Grok can turn buying intent into structured product discovery and comparison.

WebAZ is not currently listed in xAI's preconfigured Connector Catalog, so installation uses Grok's Custom MCP option.

Before You Start

  • Use a Grok account with access to Connectors.
  • Open https://grok.com/connectors.
  • The public-search experiment does not require a WebAZ account.
  • Never paste a password, API key, wallet seed phrase or other secret into a connector URL or chat.

Experiment A: Public Product Search

Add the Connector

  1. Click New Connector.
  2. Select Custom.
  3. Name: WebAZ Shopping
  4. MCP URL: https://webaz.xyz/mcp/shopping-v1
  5. Save and enable it.

Run the Test

Use WebAZ Shopping to find tissue under 15 USDC. Compare price, delivery time and return terms.

Expected Result

  • Grok invokes WebAZ Shopping Search.
  • It returns structured product cards rather than a generic list of links.
  • Results may include current WebAZ price, delivery, return and seller information.
  • Missing facts should remain missing; Grok should not invent shipping fees, taxes, guarantees or seller confirmation.

What This Does Not Do

  • No WebAZ account access
  • No order creation
  • No inventory reservation
  • No payment
  • No private account data

Experiment B: Account Quote or Draft

Add this only when you want account-authorized quote or draft functionality.

  1. Click New Connector → Custom again.
  2. Name: WebAZ Shopping Account
  3. MCP URL: https://webaz.xyz/mcp/grok-v1
  4. Complete WebAZ OAuth when prompted.

An OAuth prompt or HTTP 401 before authorization is expected security behavior.

Test with a bounded instruction:

Use WebAZ Shopping Account to prepare a quote for the selected item. Do not place an order or pay. Show the exact item, seller, price, delivery and return terms for my review.

A quote or draft is not a completed transaction. Any real commitment should remain subject to explicit human confirmation.

Business and Enterprise

A team administrator provisions the connector in xAI Cloud Console under Grok Business → Connectors → + Add Connector → Other. Team members can use it after provisioning, but each member must complete their own OAuth for account features.

Current Availability

  • Grok supports user-added Custom MCP connectors.
  • WebAZ public shopping initializes anonymously and is discovery-only.
  • WebAZ account functionality is OAuth-protected.
  • WebAZ is not currently in xAI's preconfigured Connector Catalog.
  • xAI does not currently document a public self-service submission process for third-party catalog listing.

Sources

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