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

89average UCP Score

88.9%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

Discovery90

Conformance58

Capabilities47

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.

38.1%

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).

35.9%

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.

1.5%

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

Grades

stores we could score

A · 85–10088.9%

B · 70–846.3%

C · 50–692.1%

D · 30–492.8%

F · 0–290%

By store platform

average UCP Score

Shopify96

Wix85

Custom or not identified53

Jumpseller80

Salla71

Shoptet88

Zid56

Tray79

Matching stores

12 stores

Rank	Store	Score ↓	Discovery	Conformance	Capabilities	Store platform
17730	birkenstock.com	84 B	90	88	73	Salesforce Commerce Cloud
19450	anntaylor.cominvalid	43 D	100	33	0	Salesforce Commerce Cloud
19450	bootbarn.cominvalid	43 D	100	33	0	Salesforce Commerce Cloud
19491	hema.nlinvalid	42 D	95	33	0	Salesforce Commerce Cloud
19569	sharkninja.cominvalid	40 D	90	33	0	Salesforce Commerce Cloud
19569	sketchers.cominvalid	40 D	90	33	0	Salesforce Commerce Cloud
19693	cubcadet.cainvalid	39 D	85	33	0	Salesforce Commerce Cloud
19693	pandora.netinvalid	39 D	85	33	0	Salesforce Commerce Cloud
19805	adolfodominguez.cominvalid	37 D	80	33	0	Salesforce Commerce Cloud
19805	diesel.cominvalid	37 D	80	33	0	Salesforce Commerce Cloud
19805	gettingpersonal.co.ukinvalid	37 D	80	33	0	Salesforce Commerce Cloud
19805	shop.tate.org.ukinvalid	37 D	80	33	0	Salesforce Commerce Cloud

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.