generated: '2026-08-04'
method: searched
status: published
source: https://liveouter.com/llms.txt
discovery: https://liveouter.com/.well-known/ucp
server:
  name: outer-ucp-shopping
  transport: http
  protocol: MCP over HTTP (JSON-RPC 2.0)
  url: https://liveouter.com/api/ucp/mcp
  canonical_url: https://live-outer.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:
  - '2026-04-08'
  - '2026-01-23'
introspection:
  attempted: true
  method: 'POST {"jsonrpc":"2.0","id":1,"method":"tools/list"}'
  http_status: 422
  error_code: -32001
  error: 'UCP discovery failed / invalid_profile_url — "Unable to fetch agent profile: Missing profile uri"'
  gated: true
  note: >-
    tools/list is not anonymous. The endpoint requires the calling agent to present a
    resolvable UCP agent profile URI before it will enumerate tools, so live inputSchema
    values could not be captured without registering an agent identity. The tools below are
    recorded from the names Outer publishes in its own /llms.txt and from the capabilities
    declared in /.well-known/ucp — names and purposes only, NOT schemas.
tools:
- name: search_catalog
  description: Find products in the store matching a buyer's intent.
  capability: dev.ucp.shopping.catalog.search
  schema: https://ucp.dev/2026-04-08/schemas/shopping/catalog_search.json
  source: https://liveouter.com/llms.txt
- name: create_cart
  description: Create a cart and add the desired items.
  capability: dev.ucp.shopping.cart
  schema: https://ucp.dev/2026-04-08/schemas/shopping/cart.json
  source: https://liveouter.com/llms.txt
- name: create_checkout
  description: Start the purchase flow from a cart.
  capability: dev.ucp.shopping.checkout
  schema: https://ucp.dev/2026-04-08/schemas/shopping/checkout.json
  source: https://liveouter.com/llms.txt
- name: update_checkout
  description: Set the shipping address and shipping method on a checkout.
  capability: dev.ucp.shopping.fulfillment
  schema: https://ucp.dev/2026-04-08/schemas/shopping/fulfillment.json
  source: https://liveouter.com/llms.txt
- name: complete_checkout
  description: Finalize the purchase. The buyer must explicitly approve payment.
  capability: dev.ucp.shopping.checkout
  schema: https://ucp.dev/2026-04-08/schemas/shopping/checkout.json
  source: https://liveouter.com/llms.txt
declared_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:
- id: gpay
  handler: com.google.pay
  version: '2026-01-11'
- id: shopify.card
  handler: dev.shopify.card
  version: '2026-01-15'
  card_brands: [visa, master, american_express, discover, diners_club]
- id: shop_pay
  handler: dev.shopify.shop_pay
  version: '2026-04-08'
constraints:
- Checkout requires contemporaneous human approval; agents must not complete payment without explicit buyer consent.
- The MCP endpoint is rate-limited per IP; agents must back off on HTTP 429.
- Agents should pass context.address_country and context.currency for accurate pricing and availability.
x-evidence:
  fetched: '2026-08-04'
  urls:
  - url: https://liveouter.com/.well-known/ucp
    http_status: 200
  - url: https://liveouter.com/api/ucp/mcp
    http_status: 422
  - url: https://live-outer.myshopify.com/api/ucp/mcp
    http_status: 422
  - url: https://liveouter.com/llms.txt
    http_status: 200