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GranvinhasAI PRODUCT

A micro-app
inside WhatsApp.

Auction analysis and credit purchases through WhatsApp Flows, with Efí Bank, Open Finance and Pix Automático integrations.

WhatsAppFlows
Native interface
Payments
Open Finance BrasilPayment initiation and consent
A product for the Granville ecosystem.@granvas

Original material in Brazilian Portuguese. The story on this page follows your selected language.

WHATSAPP FLOWS

Tudo começa na conversa.

Um toque abre a escolha de créditos.

Reconstrução baseada nas gravações, com dados demonstrativos.

Ler a jornada e seus limites

Pacotes da gravação fornecida. Não são uma oferta atual. Os dois capítulos são registros distintos. A duração é editorial, não tempo de processamento.

  1. Uma conversa demonstrativa informa que os créditos acabaram. O botão Comprar créditos abre o WhatsApp Flow.

  2. A sheet do Flow sobe. São exibidos os pacotes históricos de 100, 30 e 10 créditos. A seleção é de 10 créditos por R$ 49, conforme a gravação fornecida.

  3. A segunda etapa mostra os campos nome, CPF e e-mail. Pessoa Demo e [email protected] são digitados; o CPF aparece totalmente mascarado. Os teclados alfabético e numérico acompanham o campo. Nenhum dado é enviado.

  4. A terceira etapa apresenta a seleção do banco. Nubank é selecionado. Finalizar conclui o formulário, não o pagamento.

  5. Após o envio do formulário, a tela Pronto! orienta conferir a mensagem na conversa. O botão Fechar encerra o Flow. Nenhuma aprovação bancária é mostrada.

  6. De volta à conversa, aparece Resposta enviada. A mensagem seguinte reúne 10 créditos por R$ 49 e o botão Ir para o Nubank. O botão não é acionado. A gravação de referência termina aqui, sem autorização ou saldo concedido.

  7. Uma passagem editorial apresenta outro uso do produto: navegar em uma análise já existente. Não é uma análise gerada depois da compra anterior.

  8. O carrossel contém seis cards: Resumo da análise, Datas do leilão, Comparativo de Valores, Conheça a vizinhança, Situação legal e Veredito do Granville. A apresentação destaca resumo, comparativo e veredito. Os botões não são acionados. O conteúdo demonstrativo não é orientação de investimento.

  9. A apresentação termina com o telefone estável. Trata-se de reconstrução baseada nas gravações, com dados demonstrativos, sem acesso ao agente ou aos pagamentos reais.

Original material in Brazilian Portuguese. The story on this page follows your selected language.

THE PROBLEM

A link alone
cannot explain an auction.

Listings, auction terms, costs, dates and questions. Understanding an opportunity means bringing the information together and knowing what still needs checking.

Granvinhas organizes that context in the conversation. When a task needs choices and data, WhatsApp Flows provides a guided interface.

Conversation to understand. Flows to act.
WHATSAPP FLOWS + PAYMENTS

From Flow to
Pix Automático.

Choose in the conversation. Authorize at the bank. A payment integration with Efí through Open Finance.

THE JOURNEY USED IN GRANVINHAS

Open Finance with a redirect to the bank.

Buying credits starts in WhatsApp Flows. Efí initiates the payment and returns a link for authorization at the chosen bank.

  1. WhatsAppFlows

    01 Choose in the conversation

    Credit package, details and bank in a native WhatsApp form.

  2. Efí Bank

    02 Receive the bank link

    The integration sends the details to Efí. An authorization link arrives as a button in the conversation.

  3. Open Finance Brasil

    03 Authorize and track

    The customer authorizes at the bank. The integration tracks payment and sends confirmation through WhatsApp.

WHAT IS PIX AUTOMÁTICO?

One authorization.
Recurring payments.

Pix Automático enables recurring payments, such as subscriptions. The customer authorizes the company once; later debits follow the agreed terms without a new manual payment each time.

Granvinhas has two separate entry points: a Flow for one-off credit purchases and a message with buttons for recurring payment enrollment.

Enrollment designed in the integration

  1. Consent in the conversationA recurring offer sent as a WhatsApp message with buttons.
  2. Authorization request to EfíThe integration creates a request and receives the bank authorization link.
  3. Consent at the bankThe customer opens the link and authorizes at their bank.
  4. Confirmation on WhatsAppThe flow is designed to update authorization and notify the customer in the conversation.

Authorizing recurrence does not mean a bill has been paid. Subsequent payments depend on the authorized terms.

Pix Automático is part of the reported project scope. Enrollment was identified in the local flow but has not been validated in production. Enrollment and recurring charges do not appear in the recordings.

WHAT THE RECORDING SHOWS

A one-off credit purchase.

The Flow ends at the bank access button. Authorization is not in the recording; the gallery receipt belongs to another purchase.

Explore the journey screens
WHAT WAS BUILT

One conversation.
Layers of product.

01

Analysis you can explore.

Summary, dates, price comparison, neighborhood, legal status and verdict in six cards. A starting point for investigation, not an investment guarantee.

02

An interface where it matters.

Choose credits, enter details and select a bank in WhatsApp Flows. Clear steps, feedback and a return to the conversation.

03

Continuity beyond a reply.

Student identity, credit balances, payment integrations and receipts. Enrollment and balance are separate; buying credits does not enroll a student.

BEHIND THE CONVERSATION

AI to interpret.
Flows to execute.

Messages trigger orchestration, analysis tools and context. Checkout follows its own path: Flow, payment integration and payment events.

  • AI layer
    Agent orchestration and tools
  • SupabaseFunctions, context and credit control

Local presentation based on project code and materials. It does not connect an account, create charges or spend real credits.