Test stores that speak UCP and WebMCP · no real money, nothing ships · Read the quickstart →
Changelog

What's new

Changes to the test stores, the console and the docs, newest first.

3 Nov 2026

0.13.0
  • NewFernway Wholesale, a B2B storetrade.ucpsandbox.com is a florist supplier that sells to businesses only, on the released spec: anyone can browse at list prices, carts and checkouts need a business account linked with identity linking, each account sees its own prices, stems come in case packs of 10 or 25 with minimum quantities, approved accounts can pay on Net 30 through the Payment Terms extension, and checkout also runs over A2A.Stores

31 Oct 2026

0.11.0
  • NewStore analytics: who said who they were, and who proved itEach reference store's /analytics page now opens with the share of agents that named themselves and the share that proved it, a grid of doors by level of proof, what agents read first, which transports the UCP profile offers against which agents used, and one paid journey from a verified agent.Stores
  • NewHow the analytics page decides who arrived/analytics/method on every reference store explains each level of proof, what the store keeps and what it never stores.Stores

29 Oct 2026

0.8.2
  • FixedHarbour Row bookings are read and cancelled by their idConfirmation numbers are random, and get_booking and cancel_booking take the booking id from confirmation.booking_id; a confirmation number alone answers not_found.Stores
  • FixedRoom capacity is the real maximum occupancycapacity.total is the most a room sleeps, and a party that does not fit is refused with occupancy_exceeded_capacity.Stores
  • ImprovedAdd-ons point to their dishAt Kettle Street an add-on line carries line_item.parent_id for the dish it belongs to, on the checkout and on the order. A dish with no allergen recorded no longer reads as free of allergens.Stores

26 Oct 2026

0.7.6
  • ImprovedClearer returns at Northlight FlowersFresh flowers and plants: tell us within 48 hours of delivery if they arrive damaged. Vases, accessories and dried flowers: 30 days unused, free in store or $4.95 by mail. Wedding and event pieces are final sale.Stores

5 Oct 2026

0.4.0
  • ImprovedHarbour Row Stays and Kettle Street Noodles are previewsThe UCP spec for lodging and food is still settling, so these two stores will change.Stores

3 Oct 2026

0.3.0
  • NewWho shops hereEach store's analytics page shows which agents shop it and how many proved who they are. Only verified agents are named.Stores

2 Oct 2026

0.2.0
  • NewNorthlight Flowers has five shopsFind a shop by distance, delivery area, opening hours or stock, and collect an order from it.Stores
  • NewEach reference store shows how agents use itShares and timings at /analytics on the store. No agent is named.Stores
  • NewStore versionsA reference store gets a version number when it changes, and an experiment records the version it ran on.Stores
  • ImprovedStays store is clearer about dates and pricesStay dates are spelled out, the booking window is stated, and prices can be shown in the traveller's currency as a guide.Stores

1 Oct 2026

0.1.0 · Launch
  • NewThree reference storesNorthlight Flowers (retail), Harbour Row Stays (lodging) and Kettle Street Noodles (takeout).Stores