UCP Checker
Check a store
UCP status report

loja.papapa.com.br

Verified

loja.papapa.com.br publishes a valid UCP profile. The checks below list what is still worth adding.

TrayMCPHTTP 200 in 358 msrelease 2026-08-25

UCP Score 78/100 grade B · nearly there To fix 4 1 breaks the spec
Passed 10 checks
Checked 25 Oct 03:18 UTC · public requests

Findings

10 passed · 4 to fix · 1 note
Discovery
Problem
The profile isn't served with the caching the spec requires
Served with Cache-Control "max-age=14400". Spec level: MUST. Not part of the UCP Score. How to fix →
To fix
The profile has no ETag or Last-Modified header
Spec level: SHOULD. Not part of the UCP Score. How to fix →
OK
HTTPS
https
Profile URL uses https://
https
OK
UCP profile reachable
/.well-known/ucp
HTTP 200
/.well-known/ucp
OK
AI bot access
robots.txt
robots.txt allows /.well-known/ucp
robots.txt
UCP profile
To fix
Publish the public keys agents use to check your messages
keys
Your UCP profile lists no public keys, so an agent cannot confirm that a message really came from your store. How to fix →
keys
OK
Profile passes schema validation
ucp
No structural errors
ucp
OK
Protocol version present and well-formed
ucp.version
Version: 2026-08-25
ucp.version
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.
OK
Transports declared
services
MCP
services
Outside UCP
To fix
Publish Organization schema (JSON-LD) on the homepage
JSON-LD
No Organization-typed JSON-LD detected on your homepage. How to fix →
JSON-LD
OK
llms.txt
/llms.txt
Found at /llms.txt
/llms.txt
OK
sitemap.xml
/sitemap.xml
Found at /sitemap.xml
/sitemap.xml
OK
Open Graph tags
og: meta
og:title and og:type/url present
og: meta
OK
Mobile viewport meta
meta viewport
<meta name="viewport"> present
meta viewport
Check trace

How loja.papapa.com.br answered our check

The five ways an agent can reach this store, what each one met, and every request we made.

1 of 5 open
4 requests · 358 ms at the store · public requests only
  1. 01Hosting ↗
    Finding the profile
    Open
  2. 02Identity Linking ↗
    Acting for the buyer
    Not offered
  3. 03Embedded ↗
    In the buyer's browser
    Not offered
  4. 04Services ↗
    Calling its services
    Declared
  5. 05continue_url ↗
    Sending the buyer to the website
    Not declared
UCP Checkerpublic requests
  • 2 requestsFinding the profile/.well-known/ucp · 200
  • read from profileActing for the buyernot declared
  • read from profileIn the buyer's browsernot declared
  • not calledCalling its servicesMCP · declared · 3 tools
  • read from profileSending to the websitenot declared
  • 2 requestsOutside UCPhomepage · /llms.txt
Open
01 · Finding the profile2 requests
Served at /.well-known/ucp with 200 OK, 914 B. robots.txt allows /.well-known/ucp.
Not offered
02 · Acting for the buyerread from profile
The profile doesn't declare identity linking, so an agent can't act for a signed-in buyer.
Not offered
03 · In the buyer's browserread from profile
No Embedded service is declared.
Declared
04 · Calling its servicesnot called
The MCP service is declared; not called by this check.
Not declared
05 · Sending the buyer to the websiteread from profile
No permalink declared. Whether error replies carry a continue_url shows only in an agent run.
  1. 01 PROFILEGET /.well-known/ucp → 200, 914 B of JSON358 ms
  2. 01 PROFILEGET /robots.txt → allows /.well-known/ucp–
  3. 01 PROFILEValid against the 2026-08-25 schema; no keys publishedlocal
  4. OUTSIDE UCPGET / → 200, no Organization schema found–
  5. OUTSIDE UCPGET /llms.txt → 200, 1.3 KB–

MCP tools

3 listed · 3 of 3 the spec expects

The tools loja.papapa.com.br's MCP service listed when we asked (tools/list), grouped by the capability in its profile that calls for them.

Catalog searchdev.ucp.shopping.catalog.search
search_catalog
Catalog lookupdev.ucp.shopping.catalog.lookup
lookup_catalogget_product

Capabilities

2 declared, all at 2026-08-25
Catalog Lookup shopping.catalog.lookup
Catalog Search shopping.catalog.search
UCP profile as served 1.4 KB · 37 lines 
{
    "ucp": {
        "version": "2026-08-25",
        "services": {
            "dev.ucp.shopping": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/overview/",
                    "schema": "https://ucp.dev/2026-08-25/services/shopping/mcp.openrpc.json",
                    "version": "2026-08-25",
                    "endpoint": "https://loja.papapa.com.br/mcp-app/ucp",
                    "transport": "mcp"
                }
            ]
        },
        "capabilities": {
            "dev.ucp.shopping.catalog.lookup": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/catalog/lookup",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/catalog_lookup.json",
                    "version": "2026-08-25"
                }
            ],
            "dev.ucp.shopping.catalog.search": [
                {
                    "spec": "https://ucp.dev/2026-08-25/specification/shopping/catalog/search",
                    "schema": "https://ucp.dev/2026-08-25/schemas/shopping/catalog_search.json",
                    "version": "2026-08-25"
                }
            ]
        },
        "payment_handlers": [],
        "supported_versions": {
            "2026-04-08": "https://loja.papapa.com.br/.well-known/ucp/2026-04-08",
            "2026-08-25": "https://loja.papapa.com.br/.well-known/ucp/2026-08-25"
        }
    }
}
What goes in a UCP profile →Check your JSON in the Validator →Guides by store platform →
/llms.txt as served 1.3 KB · mentions UCP 
# Papapá

> Encontre papinhas, refeições completas e snacks funcionais para os pequenos!
> Localizada em Curitiba/PR.

## Catálogo
- [Era Uma Vez](https://loja.papapa.com.br/era-uma-vez)
- [Papinhas](https://loja.papapa.com.br/papinhas)
- [Lanchinhos & Dentição](https://loja.papapa.com.br/lanchinhos)
- [Refeições](https://loja.papapa.com.br/refeicoes)
- [Cereais & Mingau](https://loja.papapa.com.br/cereal-infantil)
- [Kits](https://loja.papapa.com.br/kits-de-produto)
- [Todos os Produtos](https://loja.papapa.com.br/produtos)
- [Acessórios](https://loja.papapa.com.br/acessorios)

## Políticas e Atendimento
- [Política de Troca e Devolução](https://loja.papapa.com.br/trocas-e-devolucoes): Trocas e Devoluções
- [Contato](https://loja.papapa.com.br/contato): (41) 3798-3360 · [email protected]

## Instruções para Agentes de IA
Para dados de produtos em tempo real, use os endpoints abaixo em vez de inferir a partir desta página. Capacidades públicas, sem autenticação: busca de catálogo · consulta de produto.
- [Descoberta UCP](https://loja.papapa.com.br/.well-known/ucp): perfil Universal Commerce Protocol da loja · versões suportadas: 2026-08-25, 2026-04-08
- [Endpoint MCP](https://loja.papapa.com.br/mcp-app/ucp): JSON-RPC via POST · use tools/list para descobrir as ferramentas
Is loja.papapa.com.br your store?
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Status badge

Markdown · 
[![UCP Status](https://ucpchecker.com/badge/loja.papapa.com.br)](https://ucpchecker.com/status/loja.papapa.com.br)

Questions

Can UCP agents buy from loja.papapa.com.br?
Through its MCP service, an agent can search the catalogue. This is what the store declares and what our check reached; an observed agent run shows how far an agent actually gets.
Is loja.papapa.com.br ready for UCP agents?
loja.papapa.com.br publishes a valid UCP profile and scores 78/100 (grade B). 4 things to fix: the profile isn't served with the caching the spec requires, the profile has no ETag or Last-Modified header, publish the public keys agents use to check your messages and publish Organization schema (JSON-LD) on the homepage.
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. loja.papapa.com.br's is 0.9 KB, written for UCP 2026-08-25. What goes in a UCP profile.
How was loja.papapa.com.br checked?
With public requests on 25 Oct 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.