How to Use the IBGE Economia — CNAE Activities MCP in AutoGen

Q: How do AutoGen agents share IBGE Economia — CNAE Activities tool results during a debate?

When an agent calls getsubclassecnae via this MCP Server, the output is shared in the group chat context. Other AutoGen agents read this official Brazilian classification data to challenge or validate the proposed corporate registration.

Q: How does AutoGen handle errors from the IBGE Economia — CNAE Activities MCP Server?

If a tool like listsubclassesporclasse fails or returns no results, your AutoGen agents discuss the error in their chat. A feedback loop allows them to refine the search query and try again with a different class code.

Let your AutoGen agents debate and resolve complex Brazilian business classifications using official CNAE data.

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Setup IBGE Economia — CNAE Activities with AutoGen

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Resolve tax code disputes with AutoGen debates

The `get_subclasse_cnae` tool provides the definitive ground truth that your AutoGen agents use to settle debates over corporate tax classifications. One agent can propose a classification based on a business description, while a compliance agent uses this tool to verify if the code actually matches federal guidelines. This multi-agent debate ensures you don't misclassify high-risk activities like financial services or heavy manufacturing. By arguing the merits of different codes, the agents reference official IBGE definitions to reach a consensus.

Navigate the CNAE hierarchy via multi-agent consensus

This MCP Server allows your AutoGen team to split the work of navigating Brazil's 1,332 activity codes using `list_secoes_cnae` and `list_divisoes_cnae`. A coordinator agent maps the broad sector, while a specialized tax agent drills down into the specific divisions to find the lowest-tax classification. By dividing the labor, your agent group processes thousands of corporate registrations without getting stuck in infinite loops. They pass the filtered divisions down the line, ensuring a structured path from broad sector to specific tax code.

Verify subclass eligibility with specialized agents

The `list_subclasses_por_classe` tool lets your AutoGen agents verify if a company's secondary activities conflict with its primary tax registration. Our setup queries all subclasses under a specific code to ensure the business isn't accidentally registering under a restricted or highly taxed category. Using `list_classes_cnae`, your agents cross-reference the business activities against municipal zoning laws. This automated verification prevents compliance failures before you submit official registration paperwork to the Brazilian government.

Setup guide

Set up IBGE Economia — CNAE Activities MCP in AutoGen

Prerequisites

Python 3.10+ installed
autogen-ext[mcp] package
Active Vinkius subscription with a valid endpoint token

1

Install AutoGen with MCP
Run pip install "autogen-ext[mcp]" autogen-agentchat. The MCP extension includes mcp_server_tools for stateless tool access.
2

Fetch tools from the MCP
Call mcp_server_tools(SseServerParams(url=...)) with your Vinkius endpoint. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com.
3

Run your agent
Pass the tools to AssistantAgent and call agent.run(). The agent invokes IBGE Economia — CNAE Activities tools and returns structured results.

agent.py

from autogen_ext.tools.mcp import SseServerParams, mcp_server_tools
from autogen_agentchat.agents import AssistantAgent
from autogen_ext.models.openai import OpenAIChatCompletionClient

server_params = SseServerParams(
    url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
)

tools = await mcp_server_tools(server_params)

agent = AssistantAgent(
    name="IBGE Economia — CNAE Activities_assistant",
    model_client=OpenAIChatCompletionClient(model="gpt-4o"),
    tools=tools,
)

result = await agent.run("List recent IBGE Economia — CNAE Activities data")
print(result.messages[-1].content)

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Prerequisites

Python 3.10+ installed
autogen-ext[mcp] + autogen-agentchat
Active Vinkius subscription with a valid endpoint token

1

Install dependencies
Same packages as above. McpWorkbench is ideal when your agent needs stateful sessions across multiple tool calls.
2

Use McpWorkbench as context manager
Wrap your agent in async with McpWorkbench(...) to maintain shared state and resources. The workbench manages the full MCP session lifecycle.
3

Run with workbench
Pass workbench=workbench to your agent. State is preserved across multiple tool calls within the same session.

agent.py

from autogen_ext.tools.mcp import McpWorkbench, SseServerParams
from autogen_agentchat.agents import AssistantAgent
from autogen_ext.models.openai import OpenAIChatCompletionClient

server_params = SseServerParams(
    url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
)

async with McpWorkbench(server_params) as workbench:
    agent = AssistantAgent(
        name="IBGE Economia — CNAE Activities_assistant",
        model_client=OpenAIChatCompletionClient(model="gpt-4o"),
        workbench=workbench,
    )

    result = await agent.run("List recent IBGE Economia — CNAE Activities data")
    print(result.messages[-1].content)

Get your connection token →

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by IBGE. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Common questions about IBGE Economia — CNAE Activities MCP in AutoGen

When an agent calls `get_subclasse_cnae` via this MCP Server, the output is shared in the group chat context. Other AutoGen agents read this official Brazilian classification data to challenge or validate the proposed corporate registration.

Yes, you configure the server using StreamableHttpServerParams and pass the tools to your AutoGen agents. This setup handles the schema conversion automatically, letting your agents query the Brazilian taxonomy over HTTP.

If a tool like `list_subclasses_por_classe` fails or returns no results, your AutoGen agents discuss the error in their chat. A feedback loop allows them to refine the search query and try again with a different class code.

The MCP Server requires an active connection to the IBGE API to fetch live Brazilian economic data. However, the Vinkius platform manages this connection securely, so your AutoGen agents only need to communicate with the local endpoint.

No, the server only reads public CNAE taxonomy codes and structural classifications from the IBGE database. Your private company profiles and tax calculations remain entirely within your secure AutoGen runtime.

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