generated: '2026-07-19'
method: searched
status: published
source: https://hawthorne.co/.well-known/ucp
docs: https://hawthorne.co/llms.txt
notes: >-
  Live agent-commerce MCP endpoint exposed by the Hawthorne Shopify store via the
  Universal Commerce Protocol (UCP, https://ucp.dev). The endpoint requires a UCP
  agent-profile handshake; an unauthenticated tools/list returns
  "UCP discovery failed / Missing profile uri". Tool names below are taken verbatim
  from the store's published /llms.txt agent flow and the UCP capability set in the
  /.well-known/ucp profile — not fabricated. Checkout completion requires explicit
  human buyer approval; the endpoint is rate-limited per IP (back off on 429).
server:
  name: hawthorne-ucp-shopping
  transport: http
  protocol: mcp
  url: https://hawthorne-lab.myshopify.com/api/ucp/mcp
  ucp_version: '2026-04-08'
  ucp_supported_versions:
  - '2026-04-08'
  - '2026-01-23'
  service: dev.ucp.shopping
  schema: https://ucp.dev/2026-04-08/services/shopping/mcp.openrpc.json
tools:
- name: search_catalog
  description: Find products matching the buyer's intent (UCP dev.ucp.shopping.catalog.search).
  source: llms.txt agent flow
- name: create_cart
  description: Add desired items to a cart (UCP dev.ucp.shopping.cart).
  source: llms.txt agent flow
- name: create_checkout
  description: Start the purchase flow (UCP dev.ucp.shopping.checkout).
  source: llms.txt agent flow
- name: update_checkout
  description: Set shipping address and method (UCP dev.ucp.shopping.fulfillment).
  source: llms.txt agent flow
- name: complete_checkout
  description: Finalize the purchase — buyer must approve payment.
  source: llms.txt agent flow
capabilities:
- dev.ucp.shopping.catalog.search
- dev.ucp.shopping.catalog.lookup
- dev.ucp.shopping.cart
- dev.ucp.shopping.checkout
- dev.ucp.shopping.fulfillment
- dev.ucp.shopping.discount
- dev.ucp.shopping.order
- dev.shopify.catalog
payment_handlers:
- com.google.pay
- dev.shopify.card
- dev.shopify.shop_pay