UCP status report

denishenry.cz

Q: What is a UCP profile?

The JSON file a store publishes at /.well-known/ucp to tell UCP agents which services it offers, how to call them and how it takes payment. The spec calls it the business profile. denishenry.cz's is 1.6 KB, written for UCP 2026-08-25. What goes in a UCP profile.

Q: How was denishenry.cz checked?

With public requests on 7 Nov 2026: we read /.well-known/ucp and robots.txt, validated the profile against UCP 2026-08-25, checked that its spec and schema links resolve. No sign-in and no purchase. How we check.

Verified

denishenry.cz publishes a valid UCP profile. The checks below list what is still worth adding.

ShoptetRESTHTTP 200 in 142 msrelease 2026-08-25

UCP Score 84/100 grade B · nearly there To fix 5 nothing breaks the spec

Passed 13 checks

Checked 7 Nov 23:08 UTC · signed public requests

Findings

13 passed · 5 to fix · 1 note

Discovery

To fix

The profile has no ETag or Last-Modified header

Spec level: SHOULD.

To fix

Your store lives on www.denishenry.cz; denishenry.cz only redirects to it

How we decided: denishenry.cz forwards its homepage to www.denishenry.cz; your homepage names www.denishenry.cz as its canonical address; and your UCP profile is served directly at www.denishenry.cz/.well-known/ucp. An agent given denishenry.cz instead gets a redirect, and the spec tells agents not to follow one, so it stops there. Serve /.well-known/ucp directly on denishenry.cz too if agents may use it.

HTTPS

https

Profile URL uses https://

https

UCP profile reachable

/.well-known/ucp

HTTP 200

/.well-known/ucp

AI bot access

robots.txt

robots.txt allows /.well-known/ucp

robots.txt

UCP profile

To fix

Cryptographic message signing is not yet enabled

keys

Your UCP profile lists no public keys, so cryptographic message signing is not yet enabled for this store. HTTPS already confirms your store's identity; signing adds a further layer for checkout, payment and webhook messages.

keys

Profile passes schema validation

ucp

No structural errors

ucp

Protocol version present and well-formed

ucp.version

Version: 2026-08-25

ucp.version

Spec & schema URLs resolve (12)

spec, schema

All 12 URLs resolved.

spec, schema

Services

Problem

The declared service endpoint redirects

ucp.services

https://www.denishenry.cz/ucp/v1 answered transport reachable with a 301 redirect, not a UCP response. Declare the address that answers directly, or serve the service at the address the profile declares.

ucp.services

Note

Confirm checkout-link redirect strategy

payment_handlers is present but empty — agents will not be able to complete purchases via tokenized payment flow. If this store uses checkout-link redirects, this is expected.

Capabilities declared

capabilities

3 of 6 capability families detected: Checkout, Cart Management, Catalog. A family counts once however many namespaces or extensions declare it.

capabilities

Checkout capability

shopping.checkout

dev.ucp.shopping.checkout detected

shopping.checkout

Transports declared

services

REST

services

Outside UCP

To fix

Fill in your /llms.txt brand brief

/llms.txt

Your /llms.txt answers, but the file is empty.

/llms.txt

sitemap.xml

/sitemap.xml

Found at /sitemap.xml

/sitemap.xml

Open Graph tags

og: meta

og:title and og:type/url present

og: meta

Organization schema (JSON-LD)

JSON-LD

Organization-typed JSON-LD detected

JSON-LD

Mobile viewport meta

meta viewport

meta viewport

Check trace

How denishenry.cz answered our check

What our check asked for and read, under the UCP spec's own sections, and every request we made.

Requests: 11
Connections: 5
At the store, summed: 1.84 s
Network, summed: 1.93 s
Compressed: 7 of 10
Requests signed: yes

Discovery↗

Discovery & negotiation

how agents find the profile

Found · 3 requests
Identity & Auth↗

Identity & authentication

how each side proves who it is

Signed by us · 0 keys
Payment↗

Payment architecture

how the store takes payment

None declared
Transport↗

Transport layer

how agents call the store

REST redirect
Capabilities↗

Standard capabilities

what agents can do there

5 declared

UCP CheckerUCPCheckerBot/1.0

Signed · Web Bot Auth
key K_DlV2MybP…

Discovery & negotiation/.well-known/ucp · 200
1. GET /.well-known/ucp301 Moved Permanently100 ms
2. GET www.denishenry.cz/.well-known/ucp200 OK145 ms
3. GET www.denishenry.cz/.well-known/ucp200 OK142 ms
read from profileIdentity & authenticationsigned · 0 keys
read from profilePayment architecturenone declared
1 requestTransport layerREST · redirect
read from profileStandard capabilities5 declared
Outside UCProbots.txt · homepage · /llms.txt
1. GET /robots.txt301 Moved Permanently433 ms
2. GET www.denishenry.cz/robots.txt200 OK360 ms
3. GET www.denishenry.cz/robots.txt200 OK98 ms
4. GET /301 Moved Permanently99 ms
5. GET www.denishenry.cz/200 OK331 ms
6. GET www.denishenry.cz/llms.txt200 OK550 ms
7. GET www.denishenry.cz/sitemap.xml200 OK743 ms
8. GET www.denishenry.cz/200 OK772 ms

Found

Discovery & negotiation3 requests

Served at www.denishenry.cz/.well-known/ucp with 200 OK, 1.6 KB. denishenry.cz only redirects to it. robots.txt allows /.well-known/ucp.

Read

Identity & authenticationread from profile

Every request we made was signed (Web Bot Auth, RFC 9421). The profile publishes no keys, so the store's own signed messages can't be checked.

None

Payment architectureread from profile

No payment handlers declared.

Redirect

Transport layer1 request

The REST service answered transport reachable with a 301 redirect, not a UCP response.

Read

Standard capabilitiesread from profile

5 declared at 2026-08-25. Cart, checkout change state, so a check never calls them: they show only in an agent run.

Discovery & negotiation3 requests · 301 Moved Permanently · 2 × 200 OK3,804 ms

GET /.well-known/ucp 301 Moved Permanently → www.denishenry.cz/.well-known/ucp 100 ms

Redirected to https://www.denishenry.cz/.well-known/ucp.

DNS 0 ms
Wait 99 ms
Download 0 ms

URL: https://denishenry.cz/.well-known/ucp
Server: 185.64.219.37
Sent user-agent: UCPCheckerBot/1.0 (+https://ucpchecker.com/methodology)
Sent accept: application/json
Sent accept-encoding: gzip, deflate, br, zstd
Sent signature-agent: "https://ucpchecker.com"
Sent signature: Web Bot Auth (RFC 9421)
Got server: openresty
Got content-type: text/html
Got location: https://www.denishenry.cz/.well-known/ucp

GET www.denishenry.cz/.well-known/ucp 200 OK 1.6 KB · application/json 145 ms

Answered.

DNS 0 ms
Wait 145 ms
Download 0 ms

URL: https://www.denishenry.cz/.well-known/ucp
Server: 185.184.254.10
Sent user-agent: UCPCheckerBot/1.0 (+https://ucpchecker.com/methodology)
Sent accept: application/json
Sent accept-encoding: gzip, deflate, br, zstd
Sent signature-agent: "https://ucpchecker.com"
Sent signature: Web Bot Auth (RFC 9421)
Got server: openresty
Got content-type: application/json
Got content-encoding: br
Got cache-control: public, max-age=300

GET www.denishenry.cz/.well-known/ucp 200 OK 1.6 KB · application/json 142 ms

Answered.

DNS 0 ms
Wait 141 ms
Download 0 ms

URL: https://www.denishenry.cz/.well-known/ucp
Server: 185.184.254.10
Sent user-agent: UCPCheckerBot/1.0 (+https://ucpchecker.com/methodology)
Sent accept: application/json
Sent accept-encoding: gzip, deflate, br, zstd
Sent signature-agent: "https://ucpchecker.com"
Sent signature: Web Bot Auth (RFC 9421)
Got server: openresty
Got content-type: application/json
Got content-encoding: br
Got cache-control: public, max-age=300

Outside UCP · its other files8 requests · 2 × 301 Moved Permanently · 6 × 200 OK8,246 ms

GET /robots.txt 301 Moved Permanently → www.denishenry.cz/robots.txt 433 ms

Redirected to https://www.denishenry.cz/robots.txt.

DNS 0 ms
Connect 100 ms
TLS 236 ms
Wait 95 ms
Download 0 ms

URL: https://denishenry.cz/robots.txt
Server: 185.64.219.37
Sent user-agent: UCPCheckerBot/1.0 (+https://ucpchecker.com/methodology)
Sent accept: text/plain
Sent accept-encoding: gzip, deflate, br, zstd
Sent signature-agent: "https://ucpchecker.com"
Sent signature: Web Bot Auth (RFC 9421)
Got server: openresty
Got content-type: text/html
Got location: https://www.denishenry.cz/robots.txt

GET www.denishenry.cz/robots.txt 200 OK 1.0 KB · text/plain 360 ms

Answered.

DNS 4 ms
Connect 93 ms
TLS 166 ms
Wait 95 ms
Download 0 ms

URL: https://www.denishenry.cz/robots.txt
Server: 185.184.254.10
Sent user-agent: UCPCheckerBot/1.0 (+https://ucpchecker.com/methodology)
Sent accept: text/plain
Sent accept-encoding: gzip, deflate, br, zstd
Sent signature-agent: "https://ucpchecker.com"
Sent signature: Web Bot Auth (RFC 9421)
Got server: openresty
Got content-type: text/plain; charset=utf-8
Got content-encoding: br

GET www.denishenry.cz/robots.txt 200 OK 1.0 KB · text/plain 98 ms

Answered.

DNS 0 ms
Wait 97 ms
Download 0 ms

URL: https://www.denishenry.cz/robots.txt
Server: 185.184.254.10
Sent user-agent: UCPCheckerBot/1.0 (+https://ucpchecker.com/methodology)
Sent accept: text/plain
Sent accept-encoding: gzip, deflate, br, zstd
Sent signature-agent: "https://ucpchecker.com"
Sent signature: Web Bot Auth (RFC 9421)
Got server: openresty
Got content-type: text/plain; charset=utf-8
Got content-encoding: br

GET / 301 Moved Permanently → www.denishenry.cz/ 99 ms

Redirected to https://www.denishenry.cz/.

DNS 0 ms
Wait 98 ms
Download 0 ms

URL: https://denishenry.cz/
Server: 185.64.219.37
Sent user-agent: UCPCheckerBot/1.0 (+https://ucpchecker.com/methodology)
Sent accept: text/html
Sent accept-encoding: gzip, deflate, br, zstd
Sent signature-agent: "https://ucpchecker.com"
Sent signature: Web Bot Auth (RFC 9421)
Got server: openresty
Got content-type: text/html
Got location: https://www.denishenry.cz/

GET www.denishenry.cz/ 200 OK 235.8 KB · text/html 331 ms

Answered.

DNS 0 ms
Wait 208 ms
Download 123 ms

URL: https://www.denishenry.cz/
Server: 185.184.254.10
Sent user-agent: UCPCheckerBot/1.0 (+https://ucpchecker.com/methodology)
Sent accept: text/html
Sent accept-encoding: gzip, deflate, br, zstd
Sent signature-agent: "https://ucpchecker.com"
Sent signature: Web Bot Auth (RFC 9421)
Got server: openresty
Got content-type: text/html; charset=utf-8
Got content-encoding: gzip
Got cache-control: no-store, no-cache, must-revalidate

GET www.denishenry.cz/llms.txt 200 OK 0 B · text/plain 550 ms

Answered.

DNS 0 ms
Connect 224 ms
TLS 219 ms
Wait 106 ms
Download 0 ms

URL: https://www.denishenry.cz/llms.txt
Server: 185.184.254.11
Sent user-agent: UCPCheckerBot/1.0 (+https://ucpchecker.com/methodology)
Sent accept: text/plain
Sent accept-encoding: gzip, deflate, br, zstd
Sent signature-agent: "https://ucpchecker.com"
Sent signature: Web Bot Auth (RFC 9421)
Got server: openresty
Got content-type: text/plain; charset=utf-8

GET www.denishenry.cz/sitemap.xml 200 OK 340.5 KB · text/xml 743 ms

Answered.

DNS 0 ms
Connect 287 ms
TLS 162 ms
Wait 197 ms
Download 95 ms

URL: https://www.denishenry.cz/sitemap.xml
Server: 185.184.254.11
Sent user-agent: UCPCheckerBot/1.0 (+https://ucpchecker.com/methodology)
Sent accept: application/xml,text/xml
Sent accept-encoding: gzip, deflate, br, zstd
Sent signature-agent: "https://ucpchecker.com"
Sent signature: Web Bot Auth (RFC 9421)
Got server: openresty
Got content-type: text/xml;charset=UTF-8
Got content-encoding: br
Got cache-control: no-store, no-cache, must-revalidate

GET www.denishenry.cz/ 200 OK 236.7 KB · text/html 772 ms

Answered.

DNS 0 ms
Connect 158 ms
TLS 280 ms
Wait 193 ms
Download 139 ms

URL: https://www.denishenry.cz/
Server: 185.184.254.11
Sent user-agent: UCPCheckerBot/1.0 (+https://ucpchecker.com/methodology)
Sent accept-encoding: gzip, deflate, br, zstd
Sent signature-agent: "https://ucpchecker.com"
Sent signature: Web Bot Auth (RFC 9421)
Got server: openresty
Got content-type: text/html; charset=utf-8
Got content-encoding: gzip
Got cache-control: no-store, no-cache, must-revalidate

DISCOVERYValid against the 2026-08-25 schema; no keys published

UCP profile as served 1.6 KB as served · 66 lines

{
    "ucp": {
        "version": "2026-08-25",
        "services": {
            "dev.ucp.shopping": [
                {
                    "version": "2026-08-25",
                    "spec": "https://ucp.dev/2026-08-25/specification/overview",
                    "transport": "rest",
                    "endpoint": "https://www.denishenry.cz/ucp/v1",
                    "schema": "https://ucp.dev/2026-08-25/services/shopping/rest.openapi.json"
                }
            ]
        },
        "capabilities": {
            "dev.ucp.shopping.catalog.search": [
                {
                    "version": "2026-08-25",
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/catalog/search",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/catalog_search.json"
                }
            ],
            "dev.ucp.shopping.catalog.lookup": [
                {
                    "version": "2026-08-25",
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/catalog/lookup",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/catalog_lookup.json"
                }
            ],
            "dev.ucp.shopping.cart": [
                {
                    "version": "2026-08-25",
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/cart",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/cart.json"
                }
            ],
            "dev.ucp.shopping.checkout": [
                {
                    "version": "2026-08-25",
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/checkout",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/checkout.json"
                }
            ],
            "dev.ucp.shopping.fulfillment": [
                {
                    "version": "2026-08-25",
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/extensions/fulfillment",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/fulfillment.json",
                    "extends": "dev.ucp.shopping.checkout"
                }
            ]
        },
        "payment_handlers": {},
        "business": {
            "name": "Denis Henry",
            "url": "https://www.denishenry.cz",
            "supported_currencies": [
                "CZK",
                "EUR",
                "HUF",
                "PLN"
            ],
            "contact": "[email protected]"
        }
    }
}

What goes in a UCP profile →Check your JSON in the Validator →Guides by store platform →

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Status badge

Markdown ·

[![UCP Status](https://ucpchecker.com/badge/denishenry.cz)](https://ucpchecker.com/status/denishenry.cz)

Questions

Can UCP agents buy from denishenry.cz?

Through its REST service, an agent can search the catalogue, build a cart and start a checkout. This is what the store declares and what our check reached; an observed agent run shows how far an agent actually gets.

Is denishenry.cz ready for UCP agents?

denishenry.cz publishes a valid UCP profile and scores 84/100 (grade B). 5 things to fix: the profile has no ETag or Last-Modified header, the declared service endpoint redirects, fill in your /llms.txt brand brief and cryptographic message signing is not yet enabled.

What is a UCP profile?

The JSON file a store publishes at /.well-known/ucp to tell UCP agents which services it offers, how to call them and how it takes payment. The spec calls it the business profile. denishenry.cz's is 1.6 KB, written for UCP 2026-08-25. What goes in a UCP profile.

How was denishenry.cz checked?

With public requests on 7 Nov 2026: we read /.well-known/ucp and robots.txt, validated the profile against UCP 2026-08-25, checked that its spec and schema links resolve. No sign-in and no purchase. How we check.