Open Finance Brasil MCP Server for Pydantic AI 7 tools — connect in under 2 minutes

Name: Open Finance Brasil
Availability: InStock
Author: Vinkius

ai.pydantic.dev/mcp

Built by Vinkius GDPR 7 Tools SDK

Pydantic AI brings type-safe agent development to Python with first-class MCP support. Connect Open Finance Brasil through Vinkius and every tool is automatically validated against Pydantic schemas. catch errors at build time, not in production.

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Vinkius supports streamable HTTP and SSE.

python

import asyncio
from pydantic_ai import Agent
from pydantic_ai.mcp import MCPServerHTTP

async def main():
    # Your Vinkius token. get it at cloud.vinkius.com
    server = MCPServerHTTP(url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp")

    agent = Agent(
        model="openai:gpt-4o",
        mcp_servers=[server],
        system_prompt=(
            "You are an assistant with access to Open Finance Brasil "
            "(7 tools)."
        ),
    )

    result = await agent.run(
        "What tools are available in Open Finance Brasil?"
    )
    print(result.data)

asyncio.run(main())

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About Open Finance Brasil MCP Server

Connect Open Finance Brasil to any AI agent via MCP.

How to Connect Open Finance Brasil to Pydantic AI via MCP

Follow these steps to integrate the Open Finance Brasil MCP Server with Pydantic AI.

Install Pydantic AI

Run pip install pydantic-ai

Replace the token

Replace [YOUR_TOKEN_HERE] with your Vinkius token

Run the agent

Save to agent.py and run: python agent.py

Explore tools

The agent discovers 7 tools from Open Finance Brasil with type-safe schemas

Why Use Pydantic AI with the Open Finance Brasil MCP Server

Pydantic AI provides unique advantages when paired with Open Finance Brasil through the Model Context Protocol.

Full type safety: every MCP tool response is validated against Pydantic models, catching data inconsistencies before they reach your application

Model-agnostic architecture. switch between OpenAI, Anthropic, or Gemini without changing your Open Finance Brasil integration code

Structured output guarantee: Pydantic AI ensures tool results conform to defined schemas, eliminating runtime type errors

Dependency injection system cleanly separates your Open Finance Brasil connection logic from agent behavior for testable, maintainable code

Open Finance Brasil + Pydantic AI Use Cases

Practical scenarios where Pydantic AI combined with the Open Finance Brasil MCP Server delivers measurable value.

Type-safe data pipelines: query Open Finance Brasil with guaranteed response schemas, feeding validated data into downstream processing

API orchestration: chain multiple Open Finance Brasil tool calls with Pydantic validation at each step to ensure data integrity end-to-end

Production monitoring: build validated alert agents that query Open Finance Brasil and output structured, schema-compliant notifications

Testing and QA: use Pydantic AI's dependency injection to mock Open Finance Brasil responses and write comprehensive agent tests

Open Finance Brasil MCP Tools for Pydantic AI (7)

These 7 tools become available when you connect Open Finance Brasil to Pydantic AI via MCP:

get_accounts

Returns account type, agency, number, and available balance. Get list of payment accounts and their balances

get_credit_card_bills

Needs a Credit Card Account ID. Get credit card bills for a specific card account

get_credit_cards

Returns brand, limits (total, available, used). Get credit card accounts and their limits

get_customer_data

Returns basic identification info. Get personal data of the customer (Name, CPF, Address)

get_financing

Returns loans, vehicle financing, real estate. Get financing and loan contracts

get_investments

Returns treasury, funds, CDBs, etc. Get investment portfolio

get_transactions

Needs an Account ID from get_accounts. Get transaction history for a specific account

Troubleshooting Open Finance Brasil MCP Server with Pydantic AI

Common issues when connecting Open Finance Brasil to Pydantic AI through the Vinkius, and how to resolve them.

MCPServerHTTP not found

Update: pip install --upgrade pydantic-ai

Open Finance Brasil + Pydantic AI FAQ

Common questions about integrating Open Finance Brasil MCP Server with Pydantic AI.

How does Pydantic AI discover MCP tools?

Create an MCPServerHTTP instance with the server URL. Pydantic AI connects, discovers all tools, and generates typed Python interfaces automatically.

Does Pydantic AI validate MCP tool responses?

Yes. When you define result types as Pydantic models, every tool response is validated against the schema. Invalid data raises a clear error instead of silently corrupting your pipeline.

Can I switch LLM providers without changing MCP code?

Absolutely. Pydantic AI abstracts the model layer. your Open Finance Brasil MCP integration works identically with OpenAI, Anthropic, Google, or any supported provider.