AIStart.ai
Open Finance Data MCP

Open Finance Data MCP

Cumbuca’s tool connects your bank account to ChatGPT or Claude via Open Finance, letting you access financial data directly through AI with no registration and a two-minute setup.

open financefinancial dataChatGPT integrationClaude integrationbank account connection
Open site
image for Open Finance Data MCPOpen site

What is Open Finance Data MCP?

Open Finance Data MCP is a developer tool from Cumbuca that connects your bank account directly to AI assistants like ChatGPT or Claude via Open Finance. It allows you to query financial data—such as bank statements, spending summaries, and category breakdowns—using natural language, without creating a Cumbuca account or sharing credentials. The setup takes about two minutes, and authentication is handled through your own bank’s secure Open Finance flow, regulated by the Central Bank of Brazil. Consent is revocable at any time, giving you full control over your data.

Application scenarios

  • Personal finance analysis

    Ask your AI to summarize your bank statements, identify spending patterns, or create budgets based on real transaction data.

  • Expense tracking

    Query specific categories like food, transportation, or entertainment to see how much you spent over a given period.

  • Credit card insights

    Request a breakdown of your top spending locations on your credit card over the last three months.

  • Monthly reporting

    Generate a table of all expenses for a specific month, organized by category.

  • Long-term trend analysis

    View month-by-month spending for up to ten months to spot trends or anomalies.

  • Cost-cutting strategies

    Ask the AI to suggest where you can reduce spending by a specific amount (e.g., R$ 500 per month).

  • Behavioral analysis

    Discover which day of the week you tend to spend the most, based on your transaction history.

Core Features

  • Open Finance authentication

    Log in using your own bank’s biometric or password verification—no need to create a Cumbuca account or share login credentials.

  • Natural language queries

    Ask questions in plain Portuguese (e.g., “How much did I spend on food last month?”) and get answers based on your real bank data.

  • Real-time data access

    The AI retrieves your banking information live via the Open Finance protocol every time you ask a question.

  • Revocable consent

    You can stop sharing your data at any time, directly from your bank or the tool’s interface.

  • MCP protocol support

    Works with any AI client that supports the Model Context Protocol (MCP), including ChatGPT and Claude.

  • No intermediary required

    Developers can access their own Open Finance data without needing a Central Bank license or a third-party OFaaS provider.

  • Example prompts built in

    The tool provides ready-to-use queries like “Show me my expenses month by month for the last 10 months” or “Where can I cut to save R$ 500 per month?”

Target users

  • Developers who want to explore Open Finance APIs hands-on without licensing or infrastructure overhead.
  • AI enthusiasts who want to supercharge their prompts with real financial data for more powerful analysis.
  • Fintech builders who need to prototype use cases with real data before investing in a full license.

How to use Open Finance Data MCP?

  1. Install the MCP server: Copy the server URL and add it to your AI client’s configuration (e.g., Claude Desktop, ChatGPT).
  2. Authenticate via Open Finance: Enter your CPF (Brazilian taxpayer ID) and select your bank. The authorization flow is handled by your bank, using standard Open Finance security.
  3. Chat with your data: Ask questions in natural language—the AI will access your bank data in real time and respond with summaries, tables, or insights.

No registration or account creation is required on Cumbuca’s side.

Pricing and free trial

The website does not mention any pricing or free trial details. The tool appears to be available for immediate use without payment, but you should check the official site for the latest terms.

Effect review

Open Finance Data MCP delivers on its promise of making financial data accessible via AI in a genuinely simple way. The two-minute setup and lack of account creation remove the usual friction of financial tools, while the Open Finance authentication ensures security without compromising control. The built-in example prompts help new users get started quickly, and the ability to revoke consent at any time is a strong privacy feature. For developers and AI enthusiasts in Brazil, this is a practical way to experiment with Open Finance data without bureaucratic hurdles. The tool’s real-world value depends on your bank’s participation in Open Finance, but for supported institutions, it works as advertised.

Frequently Asked Questions

What is Open Finance Data MCP?
It is a tool by Cumbuca that connects your bank account to ChatGPT or Claude via Open Finance, allowing AI to access your financial data directly.
Is registration required to use it?
No, there is no registration needed. Setup takes only two minutes.
How does the setup work?
You connect your bank account through Open Finance, and the tool links it to ChatGPT or Claude for AI-powered access to your financial data.
Is my financial data secure?
Yes, it uses Open Finance protocols, which are regulated and secure, ensuring your data is protected.
Which AI assistants are supported?
Currently, it supports ChatGPT and Claude.
Can I use it with any bank?
It works with banks that support Open Finance in Brazil. Check Cumbuca's documentation for specific banks.

Open Finance Data MCP - AI Tool Detail

Cumbuca’s tool connects your bank account to ChatGPT or Claude via Open Finance, letting you access financial data directly through AI with no registration and a two-minute setup.

Category：Agents

Visit Link：https://www.cumbuca.com/launchweek/of-data-mcp/

Tags：open finance、financial data、ChatGPT integration、Claude integration、bank account connection