Why do I need CNAE codes?

**CNAE is mandatory** for every business operating in Brazil. It determines your tax regime (Simples Nacional, Lucro Presumido), eligible activities for MEI registration, CNPJ registration, municipal licensing, and regulatory compliance.

IBGE Economia — CNAE Activities MCP Server for Pydantic AI 5 tools — connect in under 2 minutes

Name: IBGE Economia — CNAE Activities
Availability: InStock
Author: Vinkius

ai.pydantic.dev/mcp

Built by Vinkius GDPR 5 Tools SDK

Pydantic AI brings type-safe agent development to Python with first-class MCP support. Connect IBGE Economia — CNAE Activities 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 IBGE Economia — CNAE Activities "
            "(5 tools)."
        ),
    )

    result = await agent.run(
        "What tools are available in IBGE Economia — CNAE Activities?"
    )
    print(result.data)

asyncio.run(main())

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About IBGE Economia — CNAE Activities MCP Server

Give your AI agent mastery over the CNAE — Brazil's official classification of every economic activity, used for tax registration, business licensing, regulatory compliance, and market research.

Pydantic AI validates every IBGE Economia — CNAE Activities tool response against typed schemas, catching data inconsistencies at build time. Connect 5 tools through Vinkius and switch between OpenAI, Anthropic, or Gemini without changing your integration code. full type safety, structured output guarantees, and dependency injection for testable agents.

What you can do

21 Sections (A-U) — Top-level economic sectors: Agriculture, Mining, Manufacturing, IT, Finance, Health, etc.
87 Divisions — Drill into specific industries within each sector
285 Groups & 672 Classes — Granular business activity classification
1,332 Subclasses — The most specific activity code used on CNPJ (Brazilian business registration)

The IBGE Economia — CNAE Activities MCP Server exposes 5 tools through the Vinkius. Connect it to Pydantic AI in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect IBGE Economia — CNAE Activities to Pydantic AI via MCP

Follow these steps to integrate the IBGE Economia — CNAE Activities 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 5 tools from IBGE Economia — CNAE Activities with type-safe schemas

Why Use Pydantic AI with the IBGE Economia — CNAE Activities MCP Server

Pydantic AI provides unique advantages when paired with IBGE Economia — CNAE Activities 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 IBGE Economia — CNAE Activities integration code

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

Dependency injection system cleanly separates your IBGE Economia — CNAE Activities connection logic from agent behavior for testable, maintainable code

IBGE Economia — CNAE Activities + Pydantic AI Use Cases

Practical scenarios where Pydantic AI combined with the IBGE Economia — CNAE Activities MCP Server delivers measurable value.

Type-safe data pipelines: query IBGE Economia — CNAE Activities with guaranteed response schemas, feeding validated data into downstream processing

API orchestration: chain multiple IBGE Economia — CNAE Activities tool calls with Pydantic validation at each step to ensure data integrity end-to-end

Production monitoring: build validated alert agents that query IBGE Economia — CNAE Activities and output structured, schema-compliant notifications

Testing and QA: use Pydantic AI's dependency injection to mock IBGE Economia — CNAE Activities responses and write comprehensive agent tests

IBGE Economia — CNAE Activities MCP Tools for Pydantic AI (5)

These 5 tools become available when you connect IBGE Economia — CNAE Activities to Pydantic AI via MCP:

get_subclasse_cnae

Get CNAE subclass details

list_classes_cnae

g., 62 for IT activities). List CNAE classes within a division

list_divisoes_cnae

g., A for Agriculture, C for Manufacturing). List CNAE divisions within a section

list_secoes_cnae

List all 21 CNAE economic sections (A-U)

list_subclasses_por_classe

g., 62015). List all subclasses within a CNAE class

Example Prompts for IBGE Economia — CNAE Activities in Pydantic AI

Ready-to-use prompts you can give your Pydantic AI agent to start working with IBGE Economia — CNAE Activities immediately.

"What CNAE code should I use for a software development company?"

"What economic sectors exist under section C (Manufacturing)?"

"What is CNAE subclass 4711-3/01?"

Troubleshooting IBGE Economia — CNAE Activities MCP Server with Pydantic AI

Common issues when connecting IBGE Economia — CNAE Activities to Pydantic AI through the Vinkius, and how to resolve them.

MCPServerHTTP not found

Update: pip install --upgrade pydantic-ai

IBGE Economia — CNAE Activities + Pydantic AI FAQ

Common questions about integrating IBGE Economia — CNAE Activities 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 IBGE Economia — CNAE Activities MCP integration works identically with OpenAI, Anthropic, Google, or any supported provider.