Brand and press
The UCP Checker mark, our colours and type, and the words to use about us. Free to use in articles, talks and announcements, with a link back to ucpchecker.com.
The mark is an orbit with an arrow: a check going out and coming back. Give it clear space at least the height of the mark, and link it to ucpchecker.com on the web.
Colours
Paper and ink carry the page; blue is for links and the one bar that leads. The status colours mean the same thing everywhere. Choose a colour to copy it.
Type
What an agent finds when it asks your store
One JSON file at a fixed address tells an agent what it can do at your store: find products, build a cart, check out and pay.
GET /.well-known/ucp → 200 · 120 ms · release 2026-08-25
How to describe us
Use this paragraph as it is. It's the same wherever we appear, so please don't shorten or reword it.
UCP Checker is the independent validation and observability layer for the Universal Commerce Protocol. We crawl, validate and grade every public UCP manifest we can find, run the merchant directory, the UCP Score, live adoption stats, the vertical guides and the authority-bound vendor map, and track the spec as it evolves so you don't have to — measured from two vantages (what a business declares, and what actually happens when an agent transacts), the same way for everyone, without picking winners.
UCP CheckerTwo words, both capitalised. Not UCPChecker or UCP checker.
UCP profileThe file at /.well-known/ucp. Not "manifest" in new writing.
Citing our data"Source: UCP Checker (ucpchecker.com)", with the date you read it.
Using the mark
- Douse the dark mark on light grounds and the light mark on dark ones
- Douse the files above, at any size that keeps the arrow clear
- Don'trecolour, rotate, stretch or redraw it
- Don'tuse it to suggest we endorse or partner with you without asking
Our data
Our open dataset on Hugging Face, an April 2026 snapshot no longer updated, is CC BY 4.0: use it for anything, with credit and a link. The live directory, status pages, scores and Playground data are ours: quote and link them, but don't extract them in bulk. Details in our Terms.