UCP Theme Seal Pass
Certified 2026-08-13 · UCP 2026-04-08 · seal 2026-08-1
Layers
- Protocol pass
- Storefront contract pass
- Knowledge pass
- Vertical pass
UCP Theme Seal
Defrance is sealed for shopping agents.
Defrance is a Maison Luxury boutique. Shopping agents can search the catalog, open a product, and check out here. Becomy prepares independent sellers by default: every sealed theme ships this path.
The agent path
Layouts this shopping agent can open
“An agent can already walk this path in my shop.”
The exchange
What an agent asks. What the store answers.
Not a mockup: these payloads come out of Becomy's own UCP serializers and a product that is actually published.
A customer Look for dresses at Defrance, then order.
Their shopping agent Found at Defrance: Silk Column Dress. Preparing payment.
Search
POST /ucp/v1/catalog/search
The agent's request
{
"query": "dresses",
"pagination": { "limit": 1 }
}The store's answer — excerpt
{
"ucp": { "version": "2026-04-08", "status": "success" },
"products": [
{
"id": "230",
"handle": "silk-column-dress",
"title": "Silk Column Dress",
"url": "https://defrance.becomystudio.com/products/silk-column-dress",
"price_range": {
"min": { "amount": 168000, "currency": "EUR" }
},
"variants": [
{
"id": "1153",
"availability": { "available": true, "status": "in_stock" }
}
]
}
],
"pagination": { "limit": 1 }
}Pay
POST /ucp/v1/checkout-sessions
The agent's request
{
"currency": "EUR",
"line_items": [
{
"item": { "id": "1153" },
"quantity": 1
}
]
}Idempotency-Key: required on create.
The store's answer — excerpt
{
"ucp": { "version": "2026-04-08", "status": "success" },
"status": "ready_for_complete",
"currency": "EUR",
"totals": [
{
"type": "subtotal",
"amount": { "amount": 168000, "currency": "EUR" },
"display_text": "Subtotal"
},
{
"type": "total",
"amount": { "amount": 168000, "currency": "EUR" },
"display_text": "Total"
}
]
}UCP specification 2026-04-08. Payment finishes on the store's own checkout, never on a page the agent made up.
Certified checks
| A.1 | Shopping profile reachable | Pass |
|---|---|---|
| A.2 | Agent sign-in metadata | Pass |
| A.3 | Catalog search returns products | Pass |
| B1.1 | Profile reachable on this store | Pass |
| B1.2 | REST, MCP, and embedded checkout | Pass |
| B1.3 | Store story agents can quote | Pass |
| B2.1 | Product fields complete | Pass |
| B2.2 | Featured variant can check out | Pass |
| B2.3 | Product URL opens the product page | Pass |
| B2.4 | Add to cart uses the same variant | Pass |
| B3.1 | Checkout files present | Pass |
| B3.2 | Embedded checkout config | Pass |
| B3.5 | Checkout tells the agent it started | Pass |
| C.0 | Store knowledge for agents | Pass |
| D.0 | Vertical recorded | Pass |
Glossary
Why this seal exists — UCP Theme Seal
What is the UCP Theme Seal?
A public certificate that this Becomy theme lets an external shopping agent search the catalog, open a product page, and complete checkout. The protocol is UCP; the merchant-facing name is shopping agents.
What path does the agent take?
Home, collection, product, cart, and checkout — the same layouts a human uses. Becomy certifies that those pages stay reachable and that checkout tells the agent it started.
Can a shopping agent check out on Defrance?
Yes. Defrance is a certified Luxury theme. The public report on this page lists every check that passed, including catalog, product page, and embedded checkout.