UCP Checker
UCP status report

flowers-account.ucpsandbox.com

Verified

flowers-account.ucpsandbox.com publishes a valid UCP profile. That is what it declares. An observed agent run shows how far an agent actually gets.

CustomREST, MCPHTTP 200 in 434 msrelease 2026-08-25

Changed something? Run a live check now.
UCP Score 99/100 grade A · ready for UCP agents To fix 1 nothing breaks the spec
Passed 15 checks
Checked 1 Nov 10:02 UTC · signed public requests

Findings

15 passed · 1 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
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
Public keys published
keys
Keys published at the top level
keys
OK
No validation warnings
ucp
No outstanding validation issues
ucp
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
REST, MCP
services
OK
Payment handlers
payment_handlers
1 handler registered
payment_handlers
Outside UCP
To fix
Publish Organization schema (JSON-LD) on the homepage
JSON-LD
No Organization-typed JSON-LD detected on your homepage.
JSON-LD
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
Mobile viewport meta
meta viewport
<meta name="viewport"> present
meta viewport
Check trace

How flowers-account.ucpsandbox.com answered our check

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

2 of 5 open
5 requests · 5.42 s at the store · signed requests
  1. Finding the profile
    Open
  2. Acting for the buyer
    Offered
  3. In the buyer's browser
    Not offered
  4. Calling its services
    Declared
  5. Sending the buyer to the website
    Not declared
UCP CheckerUCPCheckerBot/1.0
  • Signed · Web Bot Auth
  • key K_DlV2MybP…
How to verify us ↗
  • Finding the profile/.well-known/ucp · 200
  • read from profileActing for the buyerdeclared
  • read from profileIn the buyer's browsernot declared
  • not calledCalling its servicesREST, MCP · declared · 15 tools
  • read from profileSending to the websitenot declared
  • Outside UCPhomepage · /llms.txt
Open
01 · Finding the profile2 requests
Served at /.well-known/ucp with 200 OK, 9.0 KB. robots.txt allows /.well-known/ucp.
Offered
02 · Acting for the buyerread from profile
Identity linking is declared.
Not offered
03 · In the buyer's browserread from profile
No Embedded service is declared.
Declared
04 · Calling its servicesnot called
The REST service is declared; not called by this check. The MCP service is declared; not called by this check.
Not declared
05 · Sending the buyer to the websiteread from profile
No permalink declared. Whether error replies carry a continue_url shows only in an agent run.
01 · Finding the profile2 requests · 2 × 200 OK939 ms
GET /robots.txt 200 OK 143 B · text/plain 487 ms

Answered.

  • DNS 0 ms
  • Connect 9 ms
  • TLS 181 ms
  • Wait 296 ms
  • Download 0 ms
URL
https://flowers-account.ucpsandbox.com/robots.txt
Server
172.67.180.5
Sent user-agent
UCPCheckerBot/1.0 (+https://ucpchecker.com/methodology)
Sent accept
text/plain
Sent signature-agent
"https://ucpchecker.com"
Sent signature
Web Bot Auth (RFC 9421)
Got server
cloudflare
Got content-type
text/plain; charset=utf-8
Got cache-control
no-cache, private
Got cf-ray
a53a0fd62e9a965e-EWR
GET /.well-known/ucp 200 OK 9.0 KB · application/json 434 ms

Answered.

  • DNS 0 ms
  • Connect 2 ms
  • TLS 167 ms
  • Wait 263 ms
  • Download 0 ms
URL
https://flowers-account.ucpsandbox.com/.well-known/ucp
Server
104.21.31.221
Sent user-agent
UCPCheckerBot/1.0 (+https://ucpchecker.com/methodology)
Sent accept
application/json
Sent signature-agent
"https://ucpchecker.com"
Sent signature
Web Bot Auth (RFC 9421)
Got server
cloudflare
Got content-type
application/json
Got cache-control
max-age=3600, public, stale-while-revalidate=7200
Got cf-ray
a53a0fd93dd7c33f-EWR
Outside UCP · its other files3 requests · 3 × 200 OK2,087 ms
GET / 200 OK 39.0 KB · text/html 1,771 ms

Answered.

  • DNS 0 ms
  • Connect 161 ms
  • TLS 311 ms
  • Wait 1,297 ms
  • Download 0 ms
URL
https://flowers-account.ucpsandbox.com/
Server
104.21.31.221
Sent user-agent
UCPCheckerBot/1.0 (+https://ucpchecker.com/methodology)
Sent signature-agent
"https://ucpchecker.com"
Sent signature
Web Bot Auth (RFC 9421)
Got server
cloudflare
Got content-type
text/html; charset=utf-8
Got cache-control
no-cache, private
Got cf-ray
a53a0feccc69fbfb-EWR
GET /llms.txt 200 OK 3.3 KB · text/plain 1,982 ms

Answered.

  • DNS 0 ms
  • Connect 277 ms
  • TLS 203 ms
  • Wait 1,500 ms
  • Download 0 ms
URL
https://flowers-account.ucpsandbox.com/llms.txt
Server
104.21.31.221
Sent user-agent
UCPCheckerBot/1.0 (+https://ucpchecker.com/methodology)
Sent accept
text/plain
Sent signature-agent
"https://ucpchecker.com"
Sent signature
Web Bot Auth (RFC 9421)
Got server
cloudflare
Got content-type
text/plain; charset=utf-8
Got cache-control
max-age=3600, public
Got cf-ray
a53a0fecce6f0cb2-EWR
GET /sitemap.xml 200 OK 371 B · application/xml 2,085 ms

Answered.

  • DNS 0 ms
  • Connect 379 ms
  • TLS 111 ms
  • Wait 1,593 ms
  • Download 0 ms
URL
https://flowers-account.ucpsandbox.com/sitemap.xml
Server
104.21.31.221
Sent user-agent
UCPCheckerBot/1.0 (+https://ucpchecker.com/methodology)
Sent accept
application/xml,text/xml
Sent signature-agent
"https://ucpchecker.com"
Sent signature
Web Bot Auth (RFC 9421)
Got server
cloudflare
Got content-type
application/xml
Got cache-control
no-cache, private
Got cf-ray
a53a0fecd9d01768-EWR
  1. 01 PROFILEValid against the 2026-08-25 schema; keys published
  2. NOTEAlso publishes signing_keys, which 2026-08-25 removed. Harmless, can go.

How agents reach this store. flowers-account.ucpsandbox.com's UCP profile (2026-08-25) declares two transports for dev.ucp.shopping: REST and MCP. One panel per transport, in the spec's words.

Capabilities

11 declared · all at 2026-08-25
Cart dev.ucp.shopping.cart
RESTMCP
Order Management dev.ucp.shopping.order
RESTMCP
Checkout dev.ucp.shopping.checkout
RESTMCP
Discountextension dev.ucp.shopping.discount
RESTMCP
Fulfillmentextension dev.ucp.shopping.fulfillment
RESTMCP
Location Lookup dev.ucp.common.location.lookup
RESTMCP
Location Search dev.ucp.common.location.search
RESTMCP
Buyer Consentextension dev.ucp.shopping.buyer_consent
RESTMCP
Identity Linking dev.ucp.common.identity_linking
RESTMCP
Catalog Lookup dev.ucp.shopping.catalog.lookup
RESTMCP
Catalog Search dev.ucp.shopping.catalog.search
RESTMCP

Payment handlers

1 declared
Payment Handler mock_payment_handler

REST

15 operations the spec defines · 0 called
Endpointhttps://flowers-account.ucpsandbox.com/ucp/common
Endpointhttps://flowers-account.ucpsandbox.com/ucp

The operations the UCP spec defines for each capability in the profile, appended to the endpoint. REST has no list call, so we can only say what our check called.

Catalog searchdev.ucp.shopping.catalog.search
POST/catalog/searchDeclared, not called
Catalog lookupdev.ucp.shopping.catalog.lookup
Not part of our public check.
POST/catalog/lookupDeclared, not called
POST/catalog/productDeclared, not called
Cartdev.ucp.shopping.cart
We don't call these: they change state.
POST/cartsDeclared, not called
GET/carts/{id}Declared, not called
PUT/carts/{id}Declared, not called
POST/carts/{id}/cancelDeclared, not called
Checkoutdev.ucp.shopping.checkout
We don't call these: they change state.
POST/checkout-sessionsDeclared, not called
GET/checkout-sessions/{id}Declared, not called
PUT/checkout-sessions/{id}Declared, not called
POST/checkout-sessions/{id}/completeDeclared, not called
POST/checkout-sessions/{id}/cancelDeclared, not called
Orderdev.ucp.shopping.order
Not part of our public check.
GET/orders/{id}Declared, not called
Location searchdev.ucp.common.location.search
POST/locations/searchDeclared, not called
Location lookupdev.ucp.common.location.lookup
Not part of our public check.
POST/locations/lookupDeclared, not called
Also declared, with no operations of their own
Discountdev.ucp.shopping.discount
Extends cart and checkout. No operations of its own.
Fulfillmentdev.ucp.shopping.fulfillment
Extends checkout and catalog search and catalog lookup. No operations of its own.
Buyer consentdev.ucp.shopping.buyer_consent
Extends cart and checkout. No operations of its own.
Identity linkingdev.ucp.common.identity_linking
No operations of its own.

MCP

15 listed · 15 of 15 the spec defines
Endpointhttps://flowers-account.ucpsandbox.com/mcp

The tools the UCP spec defines for each capability in the profile, checked against what the store's MCP service listed when we asked (tools/list).

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
Location searchdev.ucp.common.location.search
search_locations
Location lookupdev.ucp.common.location.lookup
lookup_locations
Also declared, with no operations of their own
Discountdev.ucp.shopping.discount
Extends cart and checkout. No operations of its own.
Fulfillmentdev.ucp.shopping.fulfillment
Extends checkout and catalog search and catalog lookup. No operations of its own.
Buyer consentdev.ucp.shopping.buyer_consent
Extends cart and checkout. No operations of its own.
Identity linkingdev.ucp.common.identity_linking
No operations of its own.
UCP profile as served 9.0 KB as served · 217 lines
{
    "ucp": {
        "version": "2026-08-25",
        "services": {
            "dev.ucp.shopping": [
                {
                    "version": "2026-08-25",
                    "spec": "https://ucp.dev/2026-08-25/specification/overview",
                    "transport": "rest",
                    "schema": "https://ucp.dev/2026-08-25/services/shopping/rest.openapi.json",
                    "endpoint": "https://flowers-account.ucpsandbox.com/ucp"
                },
                {
                    "version": "2026-08-25",
                    "spec": "https://ucp.dev/2026-08-25/specification/overview",
                    "transport": "mcp",
                    "schema": "https://ucp.dev/2026-08-25/services/shopping/mcp.openrpc.json",
                    "endpoint": "https://flowers-account.ucpsandbox.com/mcp"
                }
            ],
            "dev.ucp.common": [
                {
                    "version": "2026-08-25",
                    "spec": "https://ucp.dev/2026-08-25/specification/overview",
                    "transport": "rest",
                    "schema": "https://ucp.dev/2026-08-25/services/common/rest.openapi.json",
                    "endpoint": "https://flowers-account.ucpsandbox.com/ucp/common"
                },
                {
                    "version": "2026-08-25",
                    "spec": "https://ucp.dev/2026-08-25/specification/overview",
                    "transport": "mcp",
                    "schema": "https://ucp.dev/2026-08-25/services/common/mcp.openrpc.json",
                    "endpoint": "https://flowers-account.ucpsandbox.com/mcp"
                }
            ]
        },
        "capabilities": {
            "dev.ucp.shopping.catalog.search": [
                {
                    "version": "2026-08-25",
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/catalog/search",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/catalog_search.json"
                }
            ],
            "dev.ucp.shopping.catalog.lookup": [
                {
                    "version": "2026-08-25",
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/catalog/lookup",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/catalog_lookup.json"
                }
            ],
            "dev.ucp.shopping.cart": [
                {
                    "version": "2026-08-25",
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/cart",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/cart.json"
                }
            ],
            "dev.ucp.shopping.checkout": [
                {
                    "version": "2026-08-25",
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/checkout",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/checkout.json"
                }
            ],
            "dev.ucp.shopping.order": [
                {
                    "version": "2026-08-25",
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/order",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/order.json"
                }
            ],
            "dev.ucp.shopping.discount": [
                {
                    "version": "2026-08-25",
                    "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.cart",
                        "dev.ucp.shopping.checkout"
                    ]
                }
            ],
            "dev.ucp.shopping.fulfillment": [
                {
                    "version": "2026-08-25",
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/extensions/fulfillment",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/fulfillment.json",
                    "extends": [
                        "dev.ucp.shopping.checkout",
                        "dev.ucp.shopping.catalog.search",
                        "dev.ucp.shopping.catalog.lookup"
                    ],
                    "config": {
                        "multi_destination": [
                            {
                                "method": "shipping"
                            }
                        ],
                        "method_combinations": [
                            [
                                "shipping"
                            ]
                        ]
                    }
                }
            ],
            "dev.ucp.shopping.buyer_consent": [
                {
                    "version": "2026-08-25",
                    "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"
                    ]
                }
            ],
            "dev.ucp.common.location.search": [
                {
                    "version": "2026-08-25",
                    "spec": "https://ucp.dev/2026-08-25/specification/common/location/search",
                    "schema": "https://ucp.dev/2026-08-25/schemas/common/location_search.json"
                }
            ],
            "dev.ucp.common.location.lookup": [
                {
                    "version": "2026-08-25",
                    "spec": "https://ucp.dev/2026-08-25/specification/common/location/lookup",
                    "schema": "https://ucp.dev/2026-08-25/schemas/common/location_lookup.json"
                }
            ],
            "dev.ucp.common.identity_linking": [
                {
                    "version": "2026-08-25",
                    "spec": "https://ucp.dev/2026-08-25/specification/common/identity-linking",
                    "schema": "https://ucp.dev/2026-08-25/schemas/common/identity_linking.json",
                    "config": {
                        "scopes": {
                            "dev.ucp.shopping.order:read": {
                                "description": {
                                    "plain": "View your orders: what you bought, where it is, and when it arrives.",
                                    "markdown": "**View your orders**: what you bought, where it is, and when it arrives."
                                }
                            },
                            "dev.ucp.shopping.order:manage": {
                                "description": {
                                    "plain": "Manage your orders: cancel, return, or modify post-purchase.",
                                    "markdown": "**Manage your orders**: cancel, return, or modify post-purchase."
                                }
                            }
                        }
                    }
                }
            ]
        },
        "payment_handlers": {
            "dev.mock.payment_handler": [
                {
                    "id": "mock_payment_handler",
                    "version": "2026-08-25",
                    "spec": "https://mock.dev/ucp/payment-handler",
                    "available_instruments": [
                        {
                            "type": "card"
                        }
                    ],
                    "config": {}
                }
            ]
        },
        "supported_versions": {
            "2026-04-08": "https://flowers-account.ucpsandbox.com/.well-known/ucp/2026-04-08"
        }
    },
    "keys": [
        {
            "kid": "DBEwXe8xhKqGH-fR5p0I6_zq8pM5HygCsKM89TIRWTA",
            "kty": "EC",
            "crv": "P-256",
            "x": "jpv7gCSQuiJRb8mFgXujE1YmMHiTubnmsTswEYKs_DU",
            "y": "KapWxKV5RsBuwi3FNcyQerNBjc0SXmBA3YB98gWJsH0",
            "use": "sig",
            "alg": "ES256"
        },
        {
            "kid": "5aFwgaXo9t7DMkkLfKLcksBd_7jrZPhOL4YyJaNmLaE",
            "kty": "OKP",
            "crv": "Ed25519",
            "x": "WDEOwuWEythXIRXxvPJ10hL7mFy2xBwvUSgik5XeP3g",
            "use": "sig",
            "alg": "EdDSA"
        }
    ],
    "signing_keys": [
        {
            "kid": "DBEwXe8xhKqGH-fR5p0I6_zq8pM5HygCsKM89TIRWTA",
            "kty": "EC",
            "crv": "P-256",
            "x": "jpv7gCSQuiJRb8mFgXujE1YmMHiTubnmsTswEYKs_DU",
            "y": "KapWxKV5RsBuwi3FNcyQerNBjc0SXmBA3YB98gWJsH0",
            "use": "sig",
            "alg": "ES256"
        },
        {
            "kid": "5aFwgaXo9t7DMkkLfKLcksBd_7jrZPhOL4YyJaNmLaE",
            "kty": "OKP",
            "crv": "Ed25519",
            "x": "WDEOwuWEythXIRXxvPJ10hL7mFy2xBwvUSgik5XeP3g",
            "use": "sig",
            "alg": "EdDSA"
        }
    ],
    "name": "Northlight Flowers",
    "description": "Reference test stores. Nothing here is for sale: test cards only, no goods ship."
}
/llms.txt as served 3.3 KB · mentions UCP
# Northlight Flowers

> Hand-tied bouquets, plants and arrangements. A reference store for shopping agents.
> Reference test stores. Nothing here is for sale: test cards only, no goods ship.

Reference store operated by UCP Sandbox. UCP version 2026-08-25.
Everything an agent can do here is also possible for a person on the same pages: same products, same carts, same orders.

## Machine surfaces

- UCP profile: https://flowers-account.ucpsandbox.com/.well-known/ucp
- UCP REST binding: https://flowers-account.ucpsandbox.com/ucp/ (OpenAPI at https://flowers-account.ucpsandbox.com/ucp/openapi.json)
- MCP endpoint (JSON-RPC): https://flowers-account.ucpsandbox.com/mcp
- WebMCP: storefront pages register tools on document.modelContext

## Catalogue

- [Bouquets](https://flowers-account.ucpsandbox.com/collections/bouquets): Hand-tied that morning, in three sizes. (24 products)
- [Arrangements](https://flowers-account.ucpsandbox.com/collections/arrangements): Delivered ready, in a vase, box or basket. (18 products)
- [Plants](https://flowers-account.ucpsandbox.com/collections/plants): Indoor and outdoor, potted and thriving. (23 products)
- [Dried & Preserved](https://flowers-account.ucpsandbox.com/collections/dried-preserved): Lasts for months without water. (10 products)
- [Occasions](https://flowers-account.ucpsandbox.com/collections/occasions): Birthdays, new babies, sympathy and seasons. (14 products)
- [Vases & Pots](https://flowers-account.ucpsandbox.com/collections/vases-pots): Something to put them in. (9 products)
- [Accessories](https://flowers-account.ucpsandbox.com/collections/accessories): Tools, wrap, cards and add-ons. (12 products)

## Policies

- Returns: Fresh flowers and plants: if they arrive damaged or wilted, tell us within 48 hours of delivery with a photo and we refund or resend them. Vases, pots, accessories and dried or preserved flowers can be returned unused within 30 days of delivery for a refund to your card, free at any of our shops or by mail with a $4.95 return label. Wedding and event pieces are made to order and can't be returned.
- Delivery: Standard delivery takes 3 to 5 working days. Express US delivery is 1 to 2 days, international express 2 to 4 days. Nothing ships from this store: it is a test store and every order is simulated.
- Cancellation: Orders can be cancelled free of charge until they are marked shipped.
- Freshness promise: Cut flowers are guaranteed to last seven days from delivery with fresh water and flower food.

## Testing

- Payment instruments: instr_1 (Visa …1234, succeeds); instr_2 (Mastercard …5678, succeeds); instr_fail (Visa …0000, declines)
- Discount codes: 10OFF, WELCOME20, FIXED500
- Fulfillment: shipping (std-ship, exp-ship-us, exp-ship-intl); pickup (pickup-first, pickup-next-day)

## FAQ

- Q: Can I return a vase? A: Yes, unused within 30 days of delivery: free at any of our shops, or by mail with a $4.95 return label.
- Q: Do you deliver on Sundays? A: No. Standard and express deliveries run Monday to Saturday.
- Q: Are the flowers real? A: The catalogue is real; the shop is not. This is a reference store for testing agents. Test cards only, nothing ships.
- Q: Which payment methods do you accept? A: Test instruments only: Visa ending 1234 and Mastercard ending 5678 succeed; Visa ending 0000 is declined.
Is flowers-account.ucpsandbox.com your store?
Claim it with one DNS record.

Status badge

Markdown ·
[![UCP Status](https://ucpchecker.com/badge/flowers-account.ucpsandbox.com)](https://ucpchecker.com/status/flowers-account.ucpsandbox.com)

Questions

Can UCP agents buy from flowers-account.ucpsandbox.com?
Through its REST and MCP services, an agent can search the catalogue, build a cart and start a checkout. This is what the store declares and what our check reached; an observed agent run shows how far an agent actually gets.
Is flowers-account.ucpsandbox.com ready for UCP agents?
flowers-account.ucpsandbox.com publishes a valid UCP profile and scores 99/100 (grade A). 1 thing to fix: publish Organization schema (JSON-LD) on the homepage.
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. flowers-account.ucpsandbox.com's is 9.0 KB, written for UCP 2026-08-25. What goes in a UCP profile.
How was flowers-account.ucpsandbox.com checked?
With public requests on 1 Nov 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. No sign-in and no purchase. How we check.