Open Finance Brasil MCP Server for LangChain 7 tools — connect in under 2 minutes
LangChain is the leading Python framework for composable LLM applications. Connect Open Finance Brasil through Vinkius and LangChain agents can call every tool natively. combine them with retrievers, memory, and output parsers for sophisticated AI pipelines.
ASK AI ABOUT THIS MCP SERVER
Vinkius supports streamable HTTP and SSE.
import asyncio
from langchain_mcp_adapters.client import MultiServerMCPClient
from langchain_openai import ChatOpenAI
from langgraph.prebuilt import create_react_agent
async def main():
# Your Vinkius token. get it at cloud.vinkius.com
async with MultiServerMCPClient({
"open-finance-brasil": {
"transport": "streamable_http",
"url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
}
}) as client:
tools = client.get_tools()
agent = create_react_agent(
ChatOpenAI(model="gpt-4o"),
tools,
)
response = await agent.ainvoke({
"messages": [{
"role": "user",
"content": "Using Open Finance Brasil, show me what tools are available.",
}]
})
print(response["messages"][-1].content)
asyncio.run(main())
* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure
About Open Finance Brasil MCP Server
Connect Open Finance Brasil to any AI agent via MCP.
How to Connect Open Finance Brasil to LangChain via MCP
Follow these steps to integrate the Open Finance Brasil MCP Server with LangChain.
Install dependencies
Run pip install langchain langchain-mcp-adapters langgraph langchain-openai
Replace the token
Replace [YOUR_TOKEN_HERE] with your Vinkius token
Run the agent
Save the code and run python agent.py
Explore tools
The agent discovers 7 tools from Open Finance Brasil via MCP
Why Use LangChain with the Open Finance Brasil MCP Server
LangChain provides unique advantages when paired with Open Finance Brasil through the Model Context Protocol.
The largest ecosystem of integrations, chains, and agents. combine Open Finance Brasil MCP tools with 500+ LangChain components
Agent architecture supports ReAct, Plan-and-Execute, and custom strategies with full MCP tool access at every step
LangSmith tracing gives you complete visibility into tool calls, latencies, and token usage for production debugging
Memory and conversation persistence let agents maintain context across Open Finance Brasil queries for multi-turn workflows
Open Finance Brasil + LangChain Use Cases
Practical scenarios where LangChain combined with the Open Finance Brasil MCP Server delivers measurable value.
RAG with live data: combine Open Finance Brasil tool results with vector store retrievals for answers grounded in both real-time and historical data
Autonomous research agents: LangChain agents query Open Finance Brasil, synthesize findings, and generate comprehensive research reports
Multi-tool orchestration: chain Open Finance Brasil tools with web scrapers, databases, and calculators in a single agent run
Production monitoring: use LangSmith to trace every Open Finance Brasil tool call, measure latency, and optimize your agent's performance
Open Finance Brasil MCP Tools for LangChain (7)
These 7 tools become available when you connect Open Finance Brasil to LangChain 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 LangChain
Common issues when connecting Open Finance Brasil to LangChain through the Vinkius, and how to resolve them.
MultiServerMCPClient not found
pip install langchain-mcp-adaptersOpen Finance Brasil + LangChain FAQ
Common questions about integrating Open Finance Brasil MCP Server with LangChain.
How does LangChain connect to MCP servers?
langchain-mcp-adapters to create an MCP client. LangChain discovers all tools and wraps them as native LangChain tools compatible with any agent type.Which LangChain agent types work with MCP?
Can I trace MCP tool calls in LangSmith?
Connect Open Finance Brasil with your favorite client
Step-by-step setup guides for every MCP-compatible client and framework:
Anthropic's native desktop app for Claude with built-in MCP support.
AI-first code editor with integrated LLM-powered coding assistance.
GitHub Copilot in VS Code with Agent mode and MCP support.
Purpose-built IDE for agentic AI coding workflows.
Autonomous AI coding agent that runs inside VS Code.
Anthropic's agentic CLI for terminal-first development.
Python SDK for building production-grade OpenAI agent workflows.
Google's framework for building production AI agents.
Type-safe agent development for Python with first-class MCP support.
TypeScript toolkit for building AI-powered web applications.
TypeScript-native agent framework for modern web stacks.
Python framework for orchestrating collaborative AI agent crews.
Leading Python framework for composable LLM applications.
Data-aware AI agent framework for structured and unstructured sources.
Microsoft's framework for multi-agent collaborative conversations.
Connect Open Finance Brasil to LangChain
Get your token, paste the configuration, and start using 7 tools in under 2 minutes. No API key management needed.