generated: '2026-08-01'
method: searched
status: published
source: https://cometeer.com/.well-known/ucp
docs: https://cometeer.com/llms.txt
server:
  name: cometeer-ucp-shopping
  transport: http
  protocol: MCP (JSON-RPC 2.0 over HTTP POST)
  url: https://cometeer.com/api/ucp/mcp
  canonical_url: https://cometeer2023.myshopify.com/api/ucp/mcp
  service: dev.ucp.shopping
  spec: https://ucp.dev/2026-04-08/specification/overview/
  schema: https://ucp.dev/2026-04-08/services/shopping/mcp.openrpc.json
  versions:
    current: '2026-04-08'
    supported: ['2026-04-08', '2026-01-23']
platform:
  vendor: Shopify
  note: >-
    Cometeer's MCP surface is the Shopify-native Universal Commerce Protocol
    (UCP) shopping service, served from Cometeer's own apex host. It is a
    commerce/agentic-checkout surface, not a general-purpose product API.
access:
  gated: true
  gate: UCP agent profile
  observed_error:
    http_status: 422
    code: -32001
    message: UCP discovery failed
    data_code: invalid_profile_url
    detail: 'Unable to fetch agent profile: Missing profile uri'
  note: >-
    An anonymous tools/list POST is rejected until the calling agent presents a
    resolvable UCP agent profile URI, so live tool inputSchemas require an
    enrolled agent identity. The tool set below is NOT guessed: it is read from
    the OpenRPC schema document that Cometeer's own /.well-known/ucp names as
    the contract for this endpoint, cross-checked against the flow published in
    Cometeer's /llms.txt.
  rate_limits: Rate limited per IP; back off on HTTP 429 (per /llms.txt)
  human_approval_required: >-
    Checkout completion requires contemporaneous buyer approval; agents must not
    complete payment without explicit buyer consent (per /llms.txt).
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
- dev.shopify.card
- dev.shopify.shop_pay
tools:
- name: search_catalog
  description: Search for products in the catalog
  category: catalog
  params: [meta, catalog]
- name: lookup_catalog
  description: Batch lookup products or variants by identifier
  category: catalog
  params: [meta, catalog]
- name: get_product
  description: Get product details
  category: catalog
  params: [meta, catalog]
- name: create_cart
  description: Create a cart
  category: cart
  params: [meta, cart]
- name: get_cart
  description: Get cart
  category: cart
  params: [meta, id]
- name: update_cart
  description: Update cart
  category: cart
  params: [meta, id, cart]
- name: cancel_cart
  description: Cancel cart
  category: cart
  params: [meta, id]
- name: create_checkout
  description: Create a checkout
  category: checkout
  params: [meta, checkout]
- name: get_checkout
  description: Get checkout
  category: checkout
  params: [meta, id]
- name: update_checkout
  description: Update checkout
  category: checkout
  params: [meta, id, checkout]
- name: complete_checkout
  description: Complete checkout and place order (buyer approval required)
  category: checkout
  params: [meta, id, checkout]
- name: cancel_checkout
  description: Cancel checkout
  category: checkout
  params: [meta, id]
- name: get_order
  description: Get order
  category: order
  params: [meta, id]
related_agent_surfaces:
- name: Shop skill
  url: https://shop.app/SKILL.md
  note: Shopify's cross-store buying skill, recommended by Cometeer's /llms.txt
- name: agents.md
  url: https://cometeer.com/agents.md
  note: Canonical agent-facing store description; /llms.txt mirrors it
x-evidence:
- fetched: '2026-08-01'
  url: https://cometeer.com/.well-known/ucp
  http_status: 200
  content_type: application/json
- fetched: '2026-08-01'
  url: https://cometeer.com/api/ucp/mcp
  http_method: POST
  http_status: 422
  note: tools/list rejected without a UCP agent profile
- fetched: '2026-08-01'
  url: https://ucp.dev/2026-04-08/services/shopping/mcp.openrpc.json
  http_status: 200
  note: OpenRPC 1.3.2, "UCP Shopping Service" 2026-04-08, 13 methods