generated: '2026-08-29'
method: probed
source: https://supergoop.com/api/ucp/mcp
name: Supergoop! UCP Shopping MCP Server
description: >-
  Supergoop! serves a live, remote Model Context Protocol server at
  https://supergoop.com/api/ucp/mcp implementing the Universal Commerce Protocol
  (UCP) shopping service. An anonymous tools/list POST returned HTTP 200 with 13
  tools and full JSON Schema draft 2020-12 inputSchemas; the verbatim response is
  saved to mcp/supergoop-ucp-mcp-tools-list.json.
status: live
deployment:
  mode: remote
  endpoint: https://supergoop.com/api/ucp/mcp
  auth: unknown
  verified: probed
  note: >-
    tools/list is anonymous. Tool CALLS are tiered: catalog tools require a
    fetchable UCP agent profile URI passed in meta['ucp-agent'].profile (a
    -32001 profile_unreachable error is returned when it cannot be fetched), and
    order/customer tools require a JWT (-32000 AuthenticationRequired, HTTP 403,
    pointing at https://shopify.dev/docs/agents/get-started/authentication).
    There is no api-key path and no OAuth challenge on the MCP endpoint itself,
    so 'unknown' is the honest value rather than none/oauth/api-key.
alternate_endpoints:
  - url: https://supergoop.myshopify.com/api/ucp/mcp
    source: https://supergoop.com/.well-known/ucp (services['dev.ucp.shopping'][0].endpoint)
discovery:
  - {path: /llms.txt, url: 'https://supergoop.com/llms.txt', status: 200}
  - {path: /agents.md, url: 'https://supergoop.com/agents.md', status: 200}
  - {path: /robots.txt, url: 'https://supergoop.com/robots.txt', status: 200, note: names the UCP and MCP endpoints in comments}
  - {path: /.well-known/ucp, url: 'https://supergoop.com/.well-known/ucp', status: 200}
  - {path: /sitemap_agentic_discovery.xml, url: 'https://supergoop.com/sitemap_agentic_discovery.xml', status: 200, note: a dedicated agent-discovery sitemap containing only /agents.md}
protocol:
  name: Universal Commerce Protocol (UCP)
  spec: https://ucp.dev
  transport: mcp
  api_version_header: x-shopify-ucp-mcp-api-version
  negotiated_version: '2026-08-25'
  supported_versions: ['2026-08-25', '2026-04-08', '2026-01-23']
  service: dev.ucp.shopping
  schema: https://ucp.dev/2026-08-25/services/shopping/mcp.openrpc.json
  capabilities:
    - dev.ucp.shopping.cart
    - dev.ucp.shopping.checkout
    - dev.ucp.shopping.fulfillment
    - dev.ucp.shopping.discount
    - dev.ucp.shopping.order
    - dev.ucp.shopping.catalog.search
    - dev.ucp.shopping.catalog.lookup
    - dev.shopify.catalog
  payment_handlers:
    - com.google.pay
tools_source: mcp/supergoop-ucp-mcp-tools-list.json
tool_count: 13
tools:
  - {name: search_catalog, category: catalog, summary: 'Natural-language and filtered product search over the Supergoop! catalog; cursor paginated; conforms to dev.ucp.shopping.catalog.search.'}
  - {name: lookup_catalog, category: catalog, summary: 'Look up multiple products or variants by identifier.'}
  - {name: get_product, category: catalog, summary: 'Retrieve complete product detail by identifier; returns a single product.'}
  - {name: create_cart, category: cart, summary: 'Create a new cart.'}
  - {name: get_cart, category: cart, summary: 'Get cart contents.'}
  - {name: update_cart, category: cart, summary: 'Apply updates to a cart.'}
  - {name: cancel_cart, category: cart, summary: 'Cancel a cart.'}
  - {name: create_checkout, category: checkout, summary: 'Create a checkout; returns line items, totals, discounts and taxes.'}
  - {name: get_checkout, category: checkout, summary: 'Return checkout detail by id (gid://shopify/Checkout/...).'}
  - {name: update_checkout, category: checkout, summary: 'Update a checkout (shipping address, delivery method, buyer details).'}
  - {name: complete_checkout, category: checkout, summary: 'Complete a checkout and return the order id and Thank You Page URL. Requires meta[idempotency-key].'}
  - {name: cancel_checkout, category: checkout, summary: 'Cancel a checkout.'}
  - {name: get_order, category: order, summary: 'Get order detail. JWT required (403 AuthenticationRequired when anonymous).'}
conventions_observed:
  money: >-
    Every price is an integer in ISO 4217 minor units paired with a currency code
    ({"amount": 2500, "currency": "USD"} is $25.00). Stated in every tool
    description.
  identifiers: Shopify global ids, e.g. gid://shopify/Checkout/abc123
  pagination: cursor, via pagination.cursor on catalog search responses
  idempotency: meta['idempotency-key'] is REQUIRED on complete_checkout
  human_in_the_loop: >-
    Both robots.txt and llms.txt state that checkout, payment and order placement
    must not be completed by an agent without explicit contemporaneous human
    approval.