UCP Score leaderboard

The stores we check, ranked by UCP Score: a number from 0 to 100 for how well a store's UCP profile follows the spec and what it lets a UCP agent do, made of Discovery, Conformance and Capabilities.

about 20,000stores we could score

90average UCP Score

92.6%score 85 or more (grade A)

Where the points go

average part score out of 100

Grade A stores

Discovery98

Conformance88

Capabilities92

Every other store we could score

Discovery90

Conformance71

Capabilities37

The UCP Score weighs Discovery 30%, Conformance 40% and Capabilities 30%. How the score is made →

Most common fixes

share of the stores we could score

SHOULD The profile has no ETag or Last-Modified header

Send an ETag or Last-Modified header with /.well-known/ucp so agents can revalidate their cached copy cheaply.

42.7%

MUST The profile isn't served with the caching the spec requires

Serve /.well-known/ucp with "Cache-Control: public, max-age=300" (public, at least 60 seconds, never private, no-store or no-cache).

41%

SHOULD supported_versions isn't laid out the way the spec says

Make supported_versions an object: each key a protocol version date, each value the https URL of the profile for that version.

1.2%

Spec checks every status page shows. Each store's own fixes are on its status page.

Grades

stores we could score

A · 85–10092.6%

B · 70–844.9%

C · 50–690.2%

D · 30–492.2%

F · 0–290%

By store platform

average UCP Score

Shopify97

Wix86

Custom or not identified52

Shoptet88

Zid75

Jumpseller79

Salla95

Tray79

Matching stores

25 stores

Rank	Store	Score ↓	Discovery	Conformance	Capabilities	Store platform
1	houseofparfum.nl	100 A	100	100	100	WooCommerce
5	cervicaltractions.com	99 A	100	100	97	WooCommerce
5	elastogels.com	99 A	100	100	97	WooCommerce
5	thelumigroup.com	99 A	100	100	96	WooCommerce
14	jobstcompressionstocking.com	97 A	100	95	97	WooCommerce
14	real-ease.com	97 A	95	100	96	WooCommerce
8264	demo.ucphub.ai	96 A	100	98	90	WooCommerce
8264	vemaxshop.co.rs	96 A	100	98	90	WooCommerce
10509	boutique-production-03b7.up.railway.app	95 A	100	97	87	WooCommerce
10509	fitnesseddy.com	95 A	95	93	97	WooCommerce
10814	giddy-store.com	94 A	100	88	95	WooCommerce
10967	dasouq.com	93 A	100	91	87	WooCommerce
11049	toysvision.com	92 A	100	81	97	WooCommerce
11066	demo-dev.ucphub.ai	91 A	80	100	90	WooCommerce
11182	saltwarp.shop	90 A	95	91	82	WooCommerce
11916	test.zologic.nl	87 A	85	82	97	WooCommerce
18790	labdx.org	84 B	100	77	77	WooCommerce
19790	dunsterhouse.co.ukinvalid	66 C	100	53	48	WooCommerce
19883	bretz-nuernberg.deinvalid	43 D	100	33	0	WooCommerce
19911	citrelay.cominvalid	42 D	95	33	0	WooCommerce
19911	havenlivo.cominvalid	42 D	95	33	0	WooCommerce
19911	rabdesign.cainvalid	42 D	95	33	0	WooCommerce
19911	roseburg.cominvalid	42 D	95	33	0	WooCommerce
19953	seorankie.cominvalid	40 D	90	33	0	WooCommerce
20045	argonmedicalcps.cominvalid	39 D	85	33	0	WooCommerce

Stores whose UCP profile we could read, valid or not; not found, blocked and unreachable stores have no score. Stores with the same score share a rank. Each store links to its score page.