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 21,000stores we could score

90average UCP Score

91.4%score 85 or more (grade A)

Where the points go

average part score out of 100

Grade A stores

Discovery98

Conformance89

Capabilities92

Every other store we could score

Discovery91

Conformance73

Capabilities40

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.

43%

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).

40.9%

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.

1.4%

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

Grades

stores we could score

A · 85–10091.4%

B · 70–846.2%

C · 50–690.2%

D · 30–492.2%

F · 0–290%

By store platform

average UCP Score

Shopify96

Wix85

Custom or not identified53

Salla91

Jumpseller80

Shoptet88

Zid75

Tray79

Matching stores

first 50 of 7,430

Rank	Store	Score ↓	Discovery	Conformance	Capabilities	Store platform
7743	openswim.org.uk	96 A	100	92	96	Wix
7743	vrgaming.lv	96 A	100	92	96	Wix
10928	hvackoby.com	92 A	100	88	90	Wix
10949	aletaterapia.com	91 A	100	83	92	Wix
10949	andrewsscenicacres.com	91 A	100	83	92	Wix
10949	asociacionadvi.org	91 A	100	83	92	Wix
10949	atelierchloeg.fr	91 A	100	83	92	Wix
10949	aussiepeelback.com	91 A	100	83	92	Wix
10949	bienvenidosalacasa.mx	91 A	100	83	92	Wix
10949	biomedicalhealingforkids.com	91 A	100	83	92	Wix
10949	black-origin.com	91 A	100	83	92	Wix
10949	bubblewrapfun.co.nz	91 A	100	83	92	Wix
10949	cavalier-responsable.fr	91 A	100	83	92	Wix
10949	chezmamaly.com	91 A	100	83	92	Wix
10949	foldableflight.com	91 A	100	83	92	Wix
10949	funcationacademy.com	91 A	100	83	92	Wix
10949	hairubus.com	91 A	100	83	92	Wix
10949	happyowlcycle.com.sg	91 A	100	83	92	Wix
10949	lafeeviolette.com	91 A	100	83	92	Wix
10949	lonite.de	91 A	100	83	92	Wix
10949	mandarintimeschool.com	91 A	100	83	92	Wix
10949	my-ait.com	91 A	100	83	92	Wix
10949	ninacovaci.com	91 A	100	83	92	Wix
10949	omomobility.com	91 A	100	83	92	Wix
10949	pbatsp.com	91 A	100	83	92	Wix
10949	pimentrose.fr	91 A	100	83	92	Wix
10949	ragazzaita.com	91 A	100	83	92	Wix
10949	rising-field.com	91 A	100	83	92	Wix
10949	saintmichelcreations.com	91 A	100	83	92	Wix
10949	sawangthaimassage.com.au	91 A	100	83	92	Wix
10949	sidannaretreat.com	91 A	100	83	92	Wix
10949	solartech-center.co.th	91 A	100	83	92	Wix
10949	soundrelaxation.com.au	91 A	100	83	92	Wix
10949	thavasmx.com	91 A	100	83	92	Wix
10949	theinvestorspool.com	91 A	100	83	92	Wix
10949	ulcacademy.sg	91 A	100	83	92	Wix
10949	wendaoismus.de	91 A	100	83	92	Wix
10949	yogita.cz	91 A	100	83	92	Wix
10949	yorkmutcafe.com	91 A	100	83	92	Wix
11375	araigumahk.com	90 A	100	91	80	Wix
11375	bingowholesale.com	90 A	100	88	81	Wix
11375	britcolors.com	90 A	100	88	81	Wix
11375	casavinorosso.com	90 A	100	91	80	Wix
11375	cineteatrosaoluiz.com.br	90 A	100	88	81	Wix
11375	customlows.com	90 A	100	88	81	Wix
11375	efspecialists.com	90 A	100	88	81	Wix
11375	exercisehealthcare.com.au	90 A	100	88	81	Wix
11375	german-indian-forum.de	90 A	100	88	81	Wix
11375	gesprofi.com.do	90 A	100	88	81	Wix
11375	healthy-onthego.com	90 A	100	91	80	Wix

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.