UCP Checker
UCP status report

aliancascs.com.br

Verified

aliancascs.com.br publishes a valid UCP profile, but one thing in it breaks the spec: a UCP agent will ignore its Embedded service.

ShopifyMCP, EmbeddedHTTP 200 in 163 msrelease 2026-08-25

UCP Score 97/100 grade A · ready for UCP agents To fix 2 1 breaks the spec
Passed 17 checks
Checked 22 Oct 04:14 UTC · public requests

Findings

17 passed · 2 to fix
Discovery
OK
HTTPS
https
Profile URL uses https://
https
OK
UCP profile reachable
/.well-known/ucp
HTTP 200
/.well-known/ucp
OK
AI bot access
robots.txt
robots.txt allows /.well-known/ucp
robots.txt
UCP profile
Problem
One entry is at a different version, so agents ignore it
version
This profile declares 2026-08-25, but dev.ucp.shopping (Embedded) is at 2026-04-08. The spec says every dev.ucp.* service, capability and extension must carry the profile's version, and an agent on 2026-08-25 must reject any entry that doesn't. Declare it at 2026-08-25, and describe older versions in a supported_versions profile. Not part of the UCP Score. How to fix →
version
To fix
Publish the public keys agents use to check your messages
keys
Your UCP profile lists no public keys, so an agent cannot confirm that a message really came from your store. How to fix →
keys
OK
Profile passes schema validation
ucp
No structural errors
ucp
OK
Protocol version present and well-formed
ucp.version
Version: 2026-08-25
ucp.version
OK
No validation warnings
ucp
No outstanding validation issues
ucp
OK
Spec & schema URLs resolve (5)
spec, schema
All 5 URLs resolved.
spec, schema
Services
OK
Capabilities declared
capabilities
5 of 6 capability families detected: Checkout, Identity Linking, Cart Management, Order Management, Catalog. A family counts once however many namespaces or extensions declare it.
capabilities
OK
Checkout capability
shopping.checkout
dev.ucp.shopping.checkout detected
shopping.checkout
OK
Transports declared
services
MCP, Embedded
services
OK
Payment handlers
payment_handlers
3 handlers registered
payment_handlers
OK
MCP transport reachable
transport: mcp
tools/list returned a JSON-RPC response in 678ms
transport: mcp
Outside UCP
OK
llms.txt
/llms.txt
Found at /llms.txt
/llms.txt
OK
sitemap.xml
/sitemap.xml
Found at /sitemap.xml
/sitemap.xml
OK
Open Graph tags
og: meta
og:title and og:type/url present
og: meta
OK
Organization schema (JSON-LD)
JSON-LD
Organization-typed JSON-LD detected
JSON-LD
OK
Mobile viewport meta
meta viewport
<meta name="viewport"> present
meta viewport
Check trace

How aliancascs.com.br answered our check

The five ways an agent can reach this store, what each one met, and every request we made.

3 of 5 open · 1 breaks the spec
5 requests · 841 ms at the store · public requests only
  1. Finding the profile
    Open
  2. Acting for the buyer
    Offered
  3. In the buyer's browser
    Dropped
  4. Calling its services
    Declared
  5. Sending the buyer to the website
    Offered
UCP Checkerpublic requests
  • 2 requestsFinding the profile/.well-known/ucp · 200
  • read from profileActing for the buyerdeclared · accounts.shop.app
  • not calledIn the buyer's browserEmbedded · dropped
  • 1 requestCalling its servicesMCP · declared · 15 tools
  • read from profileSending to the websitedeclared · /buy
  • 2 requestsOutside UCPhomepage · /llms.txt
Open
01 · Finding the profile2 requests
Served at /.well-known/ucp with 200 OK, 5.7 KB. robots.txt allows /.well-known/ucp.
Offered
02 · Acting for the buyerread from profile
The buyer can sign the agent in to their own account through accounts.shop.app.
Dropped
03 · In the buyer's browsernot called
Declared at 2026-04-08 in a 2026-08-25 profile, so a current agent has to ignore it.
Declared
04 · Calling its services1 request
The MCP service is declared; not called by this check. Order updates are declared, but with no keys published a signed update can't be checked.
Offered
05 · Sending the buyer to the websiteread from profile
An agent can hand over a ready cart at aliancascs.com.br/buy.
  1. 01 PROFILEGET /.well-known/ucp → 200, 5.7 KB of JSON163 ms
  2. 01 PROFILEGET /robots.txt → allows /.well-known/ucp–
  3. 01 PROFILEValid against the 2026-08-25 schema; no keys publishedlocal
  4. 01 PROFILE5 of 5 spec and schema URLs in the profile resolvespec hosts
  5. 04 SERVICESPOST /mcp-app/ucp tools/list → 200, 15 tools678 ms
  6. 03 NOTEEmbedded service declared at 2026-04-08, so an agent on 2026-08-25 ignores it; not called by this check–
  7. OUTSIDE UCPGET / → 200, Organization schema found–
  8. OUTSIDE UCPGET /llms.txt → 200, 5.7 KB–

MCP tools

15 listed · 13 of 13 the spec expects

The tools aliancascs.com.br's MCP service listed when we asked (tools/list), grouped by the capability in its profile that calls for them.

Catalog searchdev.ucp.shopping.catalog.search
search_catalog
Catalog lookupdev.ucp.shopping.catalog.lookup
lookup_catalogget_product
Cartdev.ucp.shopping.cart
create_cartget_cartupdate_cartcancel_cart
Checkoutdev.ucp.shopping.checkout
create_checkoutget_checkoutupdate_checkoutcomplete_checkoutcancel_checkout
Orderdev.ucp.shopping.order
get_order
Other toolsnot bound to a declared capability
lookup_locationssearch_locations

Capabilities

13 declared, all at 2026-08-25
Dev Shopify Catalogvendor dev.shopify.catalog
Cart shopping.cart
Order Management shopping.order
Checkout shopping.checkout
Discountextension shopping.discount
Permalink shopping.permalink
Fulfillmentextension shopping.fulfillment
Location Lookup common.location.lookup
Location Search common.location.search
Buyer Consentextension shopping.buyer_consent
Identity Linking common.identity_linking
Catalog Lookup shopping.catalog.lookup
Catalog Search shopping.catalog.search

Payment handlers

3 declared
Google Pay gpay
Shopify Card shopify.card
Shop Pay shop_pay
UCP profile as served 11.3 KB · 268 lines
{
    "ucp": {
        "version": "2026-08-25",
        "services": {
            "dev.ucp.common": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/overview/",
                    "schema": "https://ucp.dev/2026-08-25/services/common/mcp.openrpc.json",
                    "version": "2026-08-25",
                    "endpoint": "https://tsrzri-ra.myshopify.com/api/ucp/mcp",
                    "transport": "mcp"
                }
            ],
            "dev.ucp.shopping": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/overview/",
                    "schema": "https://ucp.dev/2026-08-25/services/shopping/mcp.openrpc.json",
                    "version": "2026-08-25",
                    "endpoint": "https://tsrzri-ra.myshopify.com/api/ucp/mcp",
                    "transport": "mcp"
                },
                {
                    "spec": "https://ucp.dev/2026-04-08/specification/overview/",
                    "schema": "https://ucp.dev/2026-04-08/services/shopping/embedded.openrpc.json",
                    "version": "2026-04-08",
                    "transport": "embedded"
                }
            ]
        },
        "capabilities": {
            "dev.shopify.catalog": [
                {
                    "spec": "https://shopify.dev/docs/agents/catalog/storefront-catalog",
                    "schema": "https://shopify.dev/ucp/schemas/2026-08-25/shopify_catalog.json",
                    "extends": [
                        "dev.ucp.shopping.catalog.search",
                        "dev.ucp.shopping.catalog.lookup"
                    ],
                    "version": "2026-08-25",
                    "requires": {
                        "protocol": {
                            "min": "2026-08-25"
                        }
                    }
                }
            ],
            "dev.ucp.shopping.cart": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/cart/",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/cart.json",
                    "version": "2026-08-25"
                }
            ],
            "dev.ucp.shopping.order": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/order/",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/order.json",
                    "version": "2026-08-25"
                }
            ],
            "dev.ucp.shopping.checkout": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/checkout/",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/checkout.json",
                    "version": "2026-08-25"
                }
            ],
            "dev.ucp.shopping.discount": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/extensions/discount/",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/discount.json",
                    "extends": [
                        "dev.ucp.shopping.checkout",
                        "dev.ucp.shopping.cart"
                    ],
                    "version": "2026-08-25",
                    "requires": {
                        "protocol": {
                            "min": "2026-08-25"
                        }
                    }
                }
            ],
            "dev.ucp.shopping.permalink": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/permalink/",
                    "config": {
                        "endpoint": "https://aliancascs.com.br/buy"
                    },
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/permalink.json",
                    "version": "2026-08-25"
                }
            ],
            "dev.ucp.shopping.fulfillment": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/extensions/fulfillment/",
                    "config": {
                        "multi_destination": [],
                        "method_combinations": [
                            [
                                "shipping"
                            ]
                        ]
                    },
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/fulfillment.json",
                    "extends": [
                        "dev.ucp.shopping.checkout",
                        "dev.ucp.shopping.cart"
                    ],
                    "version": "2026-08-25",
                    "requires": {
                        "protocol": {
                            "min": "2026-08-25"
                        }
                    }
                }
            ],
            "dev.ucp.common.location.lookup": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/common/location/lookup",
                    "schema": "https://ucp.dev/2026-08-25/schemas/common/location_lookup.json",
                    "version": "2026-08-25"
                }
            ],
            "dev.ucp.common.location.search": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/common/location/search",
                    "schema": "https://ucp.dev/2026-08-25/schemas/common/location_search.json",
                    "version": "2026-08-25"
                }
            ],
            "dev.ucp.shopping.buyer_consent": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/extensions/buyer-consent/",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/buyer_consent.json",
                    "extends": [
                        "dev.ucp.shopping.cart",
                        "dev.ucp.shopping.checkout"
                    ],
                    "version": "2026-08-25",
                    "requires": {
                        "protocol": {
                            "min": "2026-08-25"
                        }
                    }
                }
            ],
            "dev.ucp.common.identity_linking": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/common/identity-linking/",
                    "config": {
                        "scopes": [],
                        "providers": {
                            "app.shop.accounts": [
                                {
                                    "type": "oauth2",
                                    "auth_url": "https://accounts.shop.app"
                                }
                            ]
                        }
                    },
                    "schema": "https://ucp.dev/2026-08-25/schemas/common/identity_linking.json",
                    "version": "2026-08-25"
                }
            ],
            "dev.ucp.shopping.catalog.lookup": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/catalog/",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/catalog_lookup.json",
                    "version": "2026-08-25"
                }
            ],
            "dev.ucp.shopping.catalog.search": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/catalog/",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/catalog_search.json",
                    "version": "2026-08-25"
                }
            ]
        },
        "payment_handlers": {
            "com.google.pay": [
                {
                    "id": "gpay",
                    "spec": "https://pay.google.com/gp/p/ucp/2026-01-11/",
                    "config": {
                        "api_version": 2,
                        "merchant_info": {
                            "auth_jwt": "",
                            "merchant_id": "16708973830884969730",
                            "merchant_name": "Alianças CS",
                            "merchant_origin": "aliancascs.com.br"
                        },
                        "api_version_minor": 0,
                        "allowed_payment_methods": [
                            {
                                "type": "CARD",
                                "parameters": {
                                    "allowed_auth_methods": [
                                        "PAN_ONLY",
                                        "CRYPTOGRAM_3DS"
                                    ],
                                    "allowed_card_networks": [
                                        "VISA",
                                        "MASTERCARD",
                                        "AMEX"
                                    ],
                                    "billing_address_required": true,
                                    "billing_address_parameters": {
                                        "format": "FULL",
                                        "phone_number_required": true
                                    }
                                },
                                "tokenization_specification": {
                                    "type": "PAYMENT_GATEWAY",
                                    "parameters": {
                                        "gateway": "shopify",
                                        "gatewayMerchantId": "75437146266"
                                    }
                                }
                            }
                        ]
                    },
                    "schema": "https://pay.google.com/gp/p/ucp/2026-01-11/schemas/config.json",
                    "version": "2026-01-11"
                }
            ],
            "dev.shopify.card": [
                {
                    "id": "shopify.card",
                    "spec": "https://ucp.dev/specification/payment-handler-guide",
                    "config": {
                        "payment_methods": [
                            {
                                "type": "card",
                                "enabled_card_brands": [
                                    "visa",
                                    "master",
                                    "elo",
                                    "american_express",
                                    "hyper",
                                    "hypercard"
                                ]
                            }
                        ]
                    },
                    "schema": "https://shopify.dev/ucp/card-payment-handler/2026-01-15/config.json",
                    "version": "2026-01-15"
                }
            ],
            "dev.shopify.shop_pay": [
                {
                    "id": "shop_pay",
                    "spec": "https://shopify.dev/ucp/shop-pay-handler/2026-04-08/spec.md",
                    "config": {
                        "shop_id": "75437146266"
                    },
                    "schema": "https://shopify.dev/ucp/shop-pay-handler/2026-04-08/schema.json",
                    "version": "2026-04-08"
                }
            ]
        },
        "supported_versions": {
            "2026-01-23": "https://tsrzri-ra.myshopify.com/.well-known/ucp/2026-01-23",
            "2026-04-08": "https://tsrzri-ra.myshopify.com/.well-known/ucp/2026-04-08"
        }
    }
}
/llms.txt as served 5.7 KB · mentions UCP
# Agent Instructions — Alianças CS

You can browse products and shop at Alianças CS's online store, https://aliancascs.com.br, on your user's behalf. This guide covers the Shop skill and UCP integration, directly or through browser-based WebMCP tools.

## Shop skill — recommended

Use the [Shop skill](https://shop.com/SKILL.md) to help your user shop with this store. Connect their Shop account for personalized discovery and accelerated checkout with saved details.

- Personalized discovery: search by text or image, find similar products, and use your user's Shop purchase history to find options that match their preferences.
- Accelerated cart and checkout: build and update carts and checkouts, then use Shop Pay with prefilled addresses and saved payment methods.
- Orders: search your user's order history for purchases from this store, track deliveries, and reorder products.

Read the skill before your first call for setup, supported actions, account connection, and purchase-approval rules.

## UCP integration

This store implements the [Universal Commerce Protocol](https://ucp.dev) for product discovery, carts, and checkout. Integrate directly with its service, or orchestrate shopping through browser-based WebMCP tools.

### Direct integration (MCP)

1. **Discover the store** — `GET https://aliancascs.com.br/.well-known/ucp` returns its UCP profile, including capabilities, service endpoints, and payment handlers.
2. **Discover available tools** — Connect to the MCP endpoint advertised in the profile (`https://aliancascs.com.br/api/ucp/mcp`) and use `tools/list` to retrieve available tools and their schemas.
3. **Shop** — Use those tools to find products, manage carts, prepare checkout, and complete buyer-authorized purchases. Follow returned statuses, messages, and handoff URLs when buyer action is required.

Use a compatible UCP version and follow the returned tool schemas. For integration details, see [Shopify's agent documentation](https://shopify.dev/docs/agents).

### Browser integration (WebMCP)

When working through a browser, use the WebMCP tools registered on this store's pages. The checkout page exposes UCP tools over WebMCP. These tools act on the checkout in the current browser session.

- **Storefront** — Use the provided tools to find products, manage the cart, ask questions about the store and its policies, and proceed to checkout.
- **Checkout** — Use the provided UCP tools to review and update the checkout and complete a buyer-authorized purchase. Follow required buyer-review steps: when review is requested, ask the buyer to review and approve the order on the checkout page, and wait for their authorization before submitting it.

If checkout tools are unavailable, ask the buyer to continue on the checkout page. Do not fall back to scripted form fills or page controls.

For integration details, see [Storefront WebMCP](https://shopify.dev/docs/api/web-mcp) and [Checkout WebMCP](https://shopify.dev/docs/agents/carts-and-checkout/checkout-webmcp).

## Interaction guidelines

- **Buyer authorization** — Place orders and submit payment only with the buyer's authorization. Follow required review and approval steps.
- **Agent traffic** — Agents must identify their requests as agent-initiated. Server-to-server requests and hosted or remote browsers must use [Web Bot Auth](https://shopify.dev/docs/api/storefront#identifying-bots-with-web-bot-auth) and follow the service's authentication requirements. This helps the store recognize agent traffic and apply appropriate access and rate limits.
- **Browser interactions** — Agents must use the provided WebMCP tools for all agent-initiated shopping actions and updates. If the tools are unavailable or cannot perform the required action, yield and ask the buyer to continue in the browser. Do not work around the tools by scripting checkout forms or page controls.
- **Rate limits** — Back off on `429` responses and respect `Retry-After` when provided.
- **Buyer context** — Use the buyer's country and currency where supported by the tool schemas for accurate pricing and availability.

## Read-only browsing

Prefer the structured information returned by the shopping tools described above. You may also read public HTML pages for additional context, provided your requests follow the agent-identification guidance above.

- Discover public URLs through `/sitemap.xml`.
- Read product pages at `/products/{handle}`.
- Browse collections at `/collections/all` or `/collections/{handle}`.
- Discover other public pages and articles through the sitemap.

Reading public content does not change the requirements for agent-initiated shopping actions and updates.


## Store Policies
- **Política de privacidade**: https://aliancascs.com.br/policies/privacy-policy
- **Termos de serviço**: https://aliancascs.com.br/policies/terms-of-service
- **Política de reembolso**: https://aliancascs.com.br/policies/refund-policy
- **Política de frete**: https://aliancascs.com.br/policies/shipping-policy


## Platform

This store is built on [Shopify](https://www.shopify.com), the commerce platform powering millions of stores worldwide. Shopify stores support UCP natively, enabling seamless agent-driven commerce. The Shop skill at
[https://shop.app/SKILL.md](https://shop.app/SKILL.md) works across every Shopify store — install it once and
your agent can transact everywhere.

- Start your own store: https://www.shopify.com/start
- Build and test against sample data: https://mock.shop (free mock Storefront GraphQL API, no store or auth needed)
- Shopify developer platform: https://shopify.dev
- Shop developer platform: https://shop.dev

- Agent discovery: the canonical agent-facing description of the store is at `/agents.md`. You're reading `/llms.txt`, which mirrors that content.
Is aliancascs.com.br your store?
Claim it with one DNS record.

Status badge

Markdown ·
[![UCP Status](https://ucpchecker.com/badge/aliancascs.com.br)](https://ucpchecker.com/status/aliancascs.com.br)

Questions

Can UCP agents buy from aliancascs.com.br?
Through its MCP service, an agent can search the catalogue, build a cart and start a checkout. The service answered our check. Its Embedded checkout is declared at an older version, so current agents ignore it. When an agent can't finish, it can hand the buyer a ready cart on the store's website. This is what the store declares and what our check reached; an observed agent run shows how far an agent actually gets.
Is aliancascs.com.br ready for UCP agents?
aliancascs.com.br publishes a valid UCP profile and scores 97/100 (grade A). 2 things to fix: one entry is at a different version, so agents ignore it and publish the public keys agents use to check your messages.
What is a UCP profile?
The JSON file a store publishes at /.well-known/ucp to tell UCP agents which services it offers, how to call them and how it takes payment. The spec calls it the business profile. aliancascs.com.br's is 5.7 KB, written for UCP 2026-08-25. What goes in a UCP profile.
How was aliancascs.com.br checked?
With public requests on 22 Oct 2026: we read /.well-known/ucp and robots.txt, validated the profile against UCP 2026-08-25, checked that its spec and schema links resolve, and called its MCP service. No sign-in and no purchase. How we check.