Why is bretz-nuernberg.de's profile invalid?

We found a UCP profile, but it failed schema validation against the official spec. The findings on this page list what failed — usually missing required fields, wrong data types, or version mismatches. Agents reject profiles that don't validate, so this needs fixing before bretz-nuernberg.de is agent-ready.

How can bretz-nuernberg.de fix this?

Run the profile through our UCP Validator — it shows line-by-line schema deviations and how to fix each one. Most invalid profiles are quick fixes: a missing field, a typo, or an outdated spec version.

Does this mean bretz-nuernberg.de is broken for shoppers?

No — the regular website still works fine for human customers. Only AI agents that strictly validate the profile will refuse to use the UCP integration. The store just isn't agent-ready until the validation issues are resolved.

How was this UCP report for bretz-nuernberg.de generated?

Our crawler fetches bretz-nuernberg.de/.well-known/ucp directly, parses the profile against the official UCP JSON schema, checks robots.txt for its rules for AI crawlers, and runs payment-handler validation. No manual review, no opinions — just what the profile actually says. The check ran 1 day ago.

How do I get a newer result for bretz-nuernberg.de?

This page shows the stored result of our last check and when it was observed. To run a new check, use Check again on this page.

Why does this status matter?

Universal Commerce Protocol is an open standard that lets a UCP agent find out what a store sells, build a cart and check out through a published contract instead of reading web pages. A valid UCP profile is how a store declares that support.

Back to status

UCP Score

UCP Score for bretz-nuernberg.de

UCP conformance score, top priorities, impact & effort matrix, and copy-paste fixes for every issue.

✕Invalid

D43/100

Analyzed Oct 15, 2026 · 1 recommendation ·Woocommerce

/ 100

UCP Score

Weak UCP signals — agent compatibility is at risk.

Agent Discovery100

UCP Conformance33

Capability Coverage0

Biggest blockers

Serve profile as application/json

Working

Agent Discovery is solid (100/100).

Blocking

Serve profile as application/json: The profile URL did not return parseable JSON.

Start Here

Serve profile as application/json

Top Priorities

Serve profile as application/json

The profile URL did not return parseable JSON.

High impact Low effort

Impact & Effort Matrix

Prioritised recommendations by expected impact and implementation effort

Quick Wins(1)

High impact, low effort

Serve profile as application/json

Strategic Investments(0)

High impact, high effort

No items

Incremental Gains(0)

Medium impact & effort

No items

Consider Later(0)

Lower priority

No items

How you compare on Woocommerce

Response time benchmarked against Woocommerce stores we check.

fastWoocommerce median 629msslow

Your store

2163ms

Woocommerce percentile

Bottom quartile

Faster than 0% of Woocommerce stores

Cohort range

324–1324ms

p25 to p75 (middle half)

Latency considerationsWooCommerce stores typically respond ~7× slower than Shopify on the same operations. Consider edge-caching the profile and product feed to close the gap.

Empty payment_handlers is OKWooCommerce stores using checkout-link redirects (the default native flow) can legitimately declare an empty payment_handlers array. Agents will redirect the buyer to your hosted checkout instead of tokenizing.

Recommendations

All improvements ranked by priority, with evidence and actionable fixes.

Serve profile as application/json

High impact Low effort

The profile URL did not return parseable JSON.

Why it matters

Agents request /.well-known/ucp expecting JSON. HTML error pages, plain text, or YAML will all fail validation regardless of content.

Show fix

Set the Content-Type header on the profile response and verify the body is valid JSON (no trailing commas, comments, or BOM).

Content-Type: application/json; charset=utf-8

UCP_RESPONSE_NOT_JSON

Full Check Breakdown

Every signal we evaluate, grouped by category.

Agent Discovery7/8 passed

Can AI agents find your store and its UCP profile?

HTTPSCore

Profile served over a secure connection.

Profile URL uses https://

Why it matters
Agents reject non-HTTPS endpoints outright. Signed payloads over HTTP are meaningless because the channel itself is tamperable.
UCP profile reachableCore

Profile fetched OK from /.well-known/ucp.

HTTP 200

Why it matters
Agents start every session by fetching this URL. If it 404s or times out, the store is invisible to agent commerce.
AI bot accessCore

robots.txt allows agent crawlers to fetch the profile.

robots.txt allows /.well-known/ucp

Why it matters
Agents respect robots.txt. Even a published profile gets ignored if the file is disallowed for known agent user-agents.
llms.txtExperimental

Hand-written brief at /llms.txt for AI agents.

Found at /llms.txt

Why it matters
Emerging convention (analogous to robots.txt). Recommendation/discovery agents read it for brand context, return policy, and crawl preferences.
sitemap.xmlCore

XML sitemap published at /sitemap.xml.

Found at /sitemap.xml

Why it matters
Tells agents which pages are canonical and how often they change. Without it, agents fall back to following internal links.
Open Graph tagsCore

OG meta tags on the homepage.

og:title and og:type/url present

Why it matters
OG tags drive how your store unfurls in agent surfaces, Slack, iMessage, and ChatGPT shares.
Organization schema (JSON-LD)Core

Schema.org Organization (or OnlineStore) JSON-LD on homepage.

Organization-typed JSON-LD detected

Why it matters
Gives agents a structured representation of your brand identity — used to verify you are who your profile claims you are.
Mobile viewport metaCore

Viewport meta tag for mobile rendering.

<meta name="viewport"> present

Why it matters
Mobile agent sessions render in browser sandboxes that respect this. Without it, screenshots taken by agents are unreadable.

UCP Conformance2/4 passed

Does your profile meet the published spec?

Profile passes schema validationCore

Profile structure conforms to the published UCP spec.

Response is not a valid JSON object

Why it matters
Strict UCP agents reject profiles with structural errors. The error code in the diagnostic shows which field failed.
Protocol version present and well-formedCore

ucp.version follows YYYY-MM-DD format.

No version declared

Why it matters
UCP versions are dates, not semver. Agents pick the closest matching schema based on this string.
Public keys publishedCore

Signing keys published as a top-level keys list for response verification. signing_keys was removed in the 2026-08-25 release; profiles that still use it are accepted.

Keys published at the top level

Why it matters
Agents use these keys to verify signed responses. Stores using checkout-link redirects (e.g. WooCommerce native) often skip this safely.
No validation warningsCore

Profile passes structural and field-level rules.

No outstanding validation issues

Why it matters
Each warning is a strict-spec deviation — the recommendations section above lists them with copy-code fixes.

Capability Coverage0/4 passed

What operations can agents actually perform?

Capabilities declaredCore

Number of agent-readable capabilities under ucp.capabilities.

0 of 6 capability families detected. A family counts once however many namespaces or extensions declare it.

Why it matters
Capabilities tell agents what operations to attempt. More coverage = more sessions complete end-to-end without falling back to scraping.
Checkout capabilityCore

Store declares a checkout-namespaced capability.

No checkout capability

Why it matters
Without a checkout capability, agents can browse but can't complete a purchase end-to-end.
Transports declaredInterop

Service transports (REST/MCP/A2A/Embedded) declared on services.

No transports declared

Why it matters
Transports tell agents how to actually call your endpoints. MCP and REST are the most widely supported today.
Payment handlersCore

Tokenized payment handlers registered for in-conversation checkout.

No handlers declared

Why it matters
Tokenized payment lets agents complete purchases without redirecting the buyer to a hosted checkout. Empty by design is valid for WooCommerce-style native checkouts.

/llms.txt content

The plain-text brief this store publishes to AI agents. Captured on the most recent check.

6.1 KB92dae2e534e4b18e

# Bretz Store Nürnberg: Exklusive Designer Möbel von Bretz in Nürnberg

> Bretz Möbel \- Leidenschaft für das Besondere\. Bretz Sofa Angebote und reduzierte Ausstellungsstücke hier günstig kaufen\. Kostenloser Versand

Generated by Yoast SEO v28.6, this is an llms.txt file, meant for consumption by LLMs.

## Seiten
- [Bretz Store Nürnberg](https://bretz-nuernberg.de/)
- [Bretz Schlafsofa](https://bretz-nuernberg.de/bretz-schlafsofa/)
- [Kontakt](https://bretz-nuernberg.de/kontakt/)
- [Datenschutzerklärung](https://bretz-nuernberg.de/datenschutzerklarung/)
- [Impressum](https://bretz-nuernberg.de/impressum/)

## Beiträge
- [Mut zur Farbe \- So setzen Sie farbenfrohe Designmöbel stilvoll ein](https://bretz-nuernberg.de/mut-zur-farbe-so-setzen-sie-farbenfrohe-designmoebel-stilvoll-ein/)
- [Haustiere und Designsofas \- worauf sollten Sie achten?](https://bretz-nuernberg.de/haustiere-und-designsofas-worauf-sollten-sie-achten/)
- [Ecksofa oder Einzelsofa \- welche Lösung passt zu Ihrem Wohnzimmer?](https://bretz-nuernberg.de/ecksofa-oder-einzelsofa/)
- [Luxusmöbel mit Charakter \- Deshalb setzen Interior Designer auf Bretz](https://bretz-nuernberg.de/luxusmoebel-mit-charakter-deshalb-setzen-interior-designer-auf-bretz/)
- [Reinigung und Pflege von Bretz Designmöbeln](https://bretz-nuernberg.de/reinigung-und-pflege-von-bretz-designmoebeln/)

## Produkte
- [NAPALI 126 \(Set 7\)  ANGEBOT](https://bretz-nuernberg.de/bretz/napali-126-set-7-angebot/): \<p\>Inkl\. 19% MwSt\.
Inkl\. Kostenloser Versand\</p\>
\<p\> \</p\>
 
\<p\>\<span style="font\-size: 24pt; font\-family: arial, helvetica, sans\-serif;"\>\<strong\>\<span style="color: \#a16d15;"\>ANGEBOT DES MONATS\</span\>\</strong\>\</span\>\<span style="font\-size: 24pt; font\-family: arial, helvetica, sans\-serif;"\>\<strong\>\<span style="color: \#a16d15;"\>\!\</span\>\</strong\>\</span\>\<br /\>
\<span style="font\-family: arial, helvetica, sans\-serif;"\>\<strong\>\<span style="color: \#a16d15;"\>Sonderpreis auf Anfrage\</span\>\</strong\>\</span\>\</p\>
- [EDGY F107 ANGEBOT](https://bretz-nuernberg.de/bretz/edgy-f107-angebot/): \<p\>Inkl\. 19% MwSt\. 
Inkl\. Lieferung und Aufbau\</p\>
\<p\> \</p\>
\<p\> \</p\>
\<p\>\<span style="font\-size: 24pt; font\-family: arial, helvetica, sans\-serif;"\>\<strong\>\<span style="color: \#a16d15;"\>ANGEBOT DES MONATS\</span\>\</strong\>\</span\>\<span style="font\-size: 24pt; font\-family: arial, helvetica, sans\-serif;"\>\<strong\>\<span style="color: \#a16d15;"\>\!\</span\>\</strong\>\</span\>\<br /\>
\<span style="font\-family: arial, helvetica, sans\-serif;"\>\<strong\>\<span style="color: \#a16d15;"\>Sonderpreis auf Anfrage\</span\>\</strong\>\</span\>\</p\>
- [OHLINDA FN118](https://bretz-nuernberg.de/bretz/ohlinda-fn118/): \<p\>Inkl\. 19% MwSt\.\<br /\>
Kostenloser Versand\</p\>
\<p\>Gerne unterbreiten wir Ihnen ein attraktives Angebot\<br /\>
Bitte senden Sie uns unverbindlich eine Preisanfrage\</p\>
\<p\>Beratung \& Bestellung\<br /\>
\<strong\>☎\</strong\> 0911 211 44994\</p\>
- [OCEAN 7 C158](https://bretz-nuernberg.de/bretz/ocean-7-c158/): \<p\>Inkl\. 19% MwSt\.\<br /\>
Kostenloser Versand\</p\>
\<p\>Gerne unterbreiten wir Ihnen ein attraktives Angebot\<br /\>
Bitte senden Sie uns unverbindlich eine Preisanfrage\</p\>
\<p\>Beratung \& Bestellung\<br /\>
\<strong\>☎\</strong\> 0911 211 44994\</p\>
- [OCEAN 7 158 Wohnlandschaft](https://bretz-nuernberg.de/bretz/ocean-7-158-wohnlandschaft/): \<p\>Preise auf Anfrage \<br /\>
Kostenloser Versand\</p\>
\<p\>Gerne unterbreiten wir Ihnen ein attraktives Angebot\<br /\>
Bitte senden Sie uns unverbindlich eine Preisanfrage\</p\>
\<p\>Beratung \& Bestellung\<br /\>
\<strong\>☎\</strong\> 0911 211 44994\</p\>

## 3D FlipBook
- [Katalog 2026](https://bretz-nuernberg.de/3d-flip-book/katalog-2026/)

## Header Builder
- [Header 02](https://bretz-nuernberg.de/header-builder/header-02/)
- [Header 01](https://bretz-nuernberg.de/header-builder/header-01/)

## Footer Template
- [Footer 02](https://bretz-nuernberg.de/footer-template/footer-02/)
- [Footer 01](https://bretz-nuernberg.de/footer-template/footer-01/)

## Kategorien
- [Beitrag](https://bretz-nuernberg.de/category/beitrag/)

## Schlagwörter
- [Bretz](https://bretz-nuernberg.de/tag/bretz/)
- [Sofa](https://bretz-nuernberg.de/tag/sofa/)
- [Lifestyle](https://bretz-nuernberg.de/tag/lifestyle/)
- [Genuss](https://bretz-nuernberg.de/tag/genuss/)
- [Hotel](https://bretz-nuernberg.de/tag/hotel/)

## Brands
- [Bretz](https://bretz-nuernberg.de/product_brand/bretz/)

## Produktkategorien
- [Bretz Stoffe](https://bretz-nuernberg.de/produkte/bretz-stoffe/)
- [Bretz Sofas](https://bretz-nuernberg.de/produkte/bretz-sofas/)
- [Kollektion](https://bretz-nuernberg.de/produkte/kollektion/)
- [Basiskategorie](https://bretz-nuernberg.de/produkte/basiskategorie/)
- [Kissen](https://bretz-nuernberg.de/produkte/bretz-kissen/)

## Produkt\-Schlagwörter
- [Bretz Sofas](https://bretz-nuernberg.de/produkt-schlagwort/bretz-sofas/)
- [Kissen](https://bretz-nuernberg.de/produkt-schlagwort/kissen/)
- [Cloud 7 154](https://bretz-nuernberg.de/produkt-schlagwort/cloud-7-154/)
- [Cocoa Island 119 Ausstellungsstücke](https://bretz-nuernberg.de/produkt-schlagwort/cocoa-island-119-ausstellungsstuecke/)
- [edgy 107](https://bretz-nuernberg.de/produkt-schlagwort/edgy-107/)

## Produkt Farbe
- [Lagoon Blue \- Arabesk Türkis](https://bretz-nuernberg.de/farbe/lagoon-blue-arabesk-tuerkis/)
- [Silberschimmer](https://bretz-nuernberg.de/farbe/silberschimmer/)
- [Arabesk Bordeaux](https://bretz-nuernberg.de/farbe/arabesk-bordeaux/)
- [Türkis Mix](https://bretz-nuernberg.de/farbe/tuerkis-mix/)
- [Gray](https://bretz-nuernberg.de/farbe/gray/)

## Collections
- [Bretz Ausstellungsstücke](https://bretz-nuernberg.de/product_collection/bretz-ausstellungsstuecke/)

## Editionen
- [Cloud 7 154](https://bretz-nuernberg.de/bretz-sofas/cloud-7-154/)
- [Cocoa Island 119](https://bretz-nuernberg.de/bretz-sofas/cocoa-island-119/)
- [OCEAN 7](https://bretz-nuernberg.de/bretz-sofas/ocean-7/)
- [Edgy](https://bretz-nuernberg.de/bretz-sofas/edgy/)
- [Ohlinda](https://bretz-nuernberg.de/bretz-sofas/ohlinda/)

## Optional
- [Sitemap index](https://bretz-nuernberg.de/sitemap_index.xml)

View source ↗

Technical Vitals

Technical details for this UCP endpoint
UCP Status	Invalid
Endpoint	https://bretz-nuernberg.de/.well-known/ucp
HTTP Status	200
UCP Version	—
Transports	—
Last Observed	2026-10-15T13:00:22+00:00
Last Full Index	Observed Oct 15, 2026

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