{
  "ucp": {
    "version": "2026-04-08",
    "status": "success",
    "services": {
      "dev.ucp.shopping": [
        {
          "version": "2026-04-08",
          "transport": "mcp",
          "endpoint": "https://tattty.com/api/ucp/mcp",
          "spec": "https://ucp.dev/2026-04-08/specification/overview/",
          "schema": "https://ucp.dev/2026-04-08/services/shopping/mcp.openrpc.json"
        },
        {
          "version": "2026-04-08",
          "transport": "embedded",
          "spec": "https://ucp.dev/2026-04-08/specification/overview/",
          "schema": "https://ucp.dev/2026-04-08/services/shopping/embedded.openrpc.json"
        }
      ]
    },
    "capabilities": {
      "dev.ucp.shopping.catalog.search": [
        {
          "version": "2026-04-08",
          "spec": "https://ucp.dev/2026-04-08/specification/catalog",
          "schema": "https://ucp.dev/2026-04-08/schemas/shopping/catalog_search.json"
        }
      ],
      "dev.ucp.shopping.catalog.lookup": [
        {
          "version": "2026-04-08",
          "spec": "https://ucp.dev/2026-04-08/specification/catalog",
          "schema": "https://ucp.dev/2026-04-08/schemas/shopping/catalog_lookup.json"
        }
      ],
      "dev.ucp.shopping.cart": [
        {
          "version": "2026-04-08",
          "spec": "https://ucp.dev/2026-04-08/specification/cart",
          "schema": "https://ucp.dev/2026-04-08/schemas/shopping/cart.json"
        }
      ],
      "dev.ucp.shopping.checkout": [
        {
          "version": "2026-04-08",
          "spec": "https://ucp.dev/2026-04-08/specification/checkout",
          "schema": "https://ucp.dev/2026-04-08/schemas/shopping/checkout.json"
        }
      ],
      "dev.ucp.shopping.order": [
        {
          "version": "2026-04-08",
          "spec": "https://ucp.dev/2026-04-08/specification/order",
          "schema": "https://ucp.dev/2026-04-08/schemas/shopping/order.json"
        }
      ],
      "dev.ucp.shopping.fulfillment": [
        {
          "version": "2026-04-08",
          "spec": "https://ucp.dev/2026-04-08/specification/fulfillment",
          "schema": "https://ucp.dev/2026-04-08/schemas/shopping/fulfillment.json",
          "extends": [
            "dev.ucp.shopping.checkout",
            "dev.ucp.shopping.cart"
          ]
        }
      ],
      "dev.ucp.shopping.discount": [
        {
          "version": "2026-04-08",
          "spec": "https://ucp.dev/2026-04-08/specification/discount",
          "schema": "https://ucp.dev/2026-04-08/schemas/shopping/discount.json",
          "extends": [
            "dev.ucp.shopping.checkout",
            "dev.ucp.shopping.cart"
          ]
        }
      ],
      "dev.ucp.shopping.buyer_consent": [
        {
          "version": "2026-04-08",
          "spec": "https://ucp.dev/2026-04-08/specification/buyer-consent",
          "schema": "https://ucp.dev/2026-04-08/schemas/shopping/buyer_consent.json",
          "extends": [
            "dev.ucp.shopping.checkout"
          ]
        }
      ],
      "dev.ucp.shopping.ap2_mandates": [
        {
          "version": "2026-04-08",
          "spec": "https://ucp.dev/2026-04-08/specification/ap2-mandates",
          "schema": "https://ucp.dev/2026-04-08/schemas/shopping/ap2_mandate.json",
          "extends": [
            "dev.ucp.shopping.checkout"
          ]
        }
      ],
      "dev.shopify.catalog": [
        {
          "version": "2026-04-08",
          "spec": "https://shopify.dev/docs/agents/catalog/storefront-catalog-extension",
          "schema": "https://shopify.dev/ucp/schemas/2026-04-08/shopify_catalog.json",
          "extends": [
            "dev.ucp.shopping.catalog.search",
            "dev.ucp.shopping.catalog.lookup"
          ],
          "requires": {
            "protocol": {
              "min": "2026-04-08"
            }
          }
        }
      ],
      "dev.ucp.common.identity_linking": [
        {
          "version": "2026-04-08",
          "spec": "https://ucp.dev/2026-04-08/specification/identity-linking",
          "schema": "https://ucp.dev/2026-04-08/schemas/common/identity_linking.json"
        }
      ]
    },
    "payment_handlers": {
      "dev.shopify.shop_pay": [
        {
          "id": "shop_pay",
          "version": "2026-01-11"
        }
      ],
      "com.google.pay": [
        {
          "id": "gpay",
          "version": "2026-01-11"
        }
      ]
    },
    "supported_versions": {
      "2026-04-08": "https://tattty.com/.well-known/ucp/2026-04-08"
    },
    "agent_guide": "Support catalog search, product lookup, cart creation, checkout, order tracking, discounts, identity linking, Shop Pay and Google Pay. Discover additional capabilities through MCP tools/list."
  },
  "signing_keys": [
    {
      "kid": "tattty-prod",
      "kty": "EC",
      "crv": "P-256",
      "x": "4DimY2DBKwTb8V2M0vPPJ1Bbf_6BTKpwF5LiepdGDBk",
      "y": "7VpmYCeh_g9eWHSfrPj6o5UF3sG7mnxd4PctynDjA8w",
      "use": "sig",
      "alg": "ES256"
    }
  ]
}