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 LlamaIndex 5 tools — connect in under 2 minutes

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

docs.llamaindex.ai/en/stable/module_guides/tools/mcp

Built by Vinkius GDPR 5 Tools Framework

LlamaIndex specializes in data-aware AI agents that connect LLMs to structured and unstructured sources. Add IBGE Economia — CNAE Activities as an MCP tool provider through Vinkius and your agents can query, analyze, and act on live data alongside your existing indexes.

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python

import asyncio
from llama_index.tools.mcp import BasicMCPClient, McpToolSpec
from llama_index.core.agent.workflow import FunctionAgent
from llama_index.llms.openai import OpenAI

async def main():
    # Your Vinkius token. get it at cloud.vinkius.com
    mcp_client = BasicMCPClient("https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp")
    mcp_tool_spec = McpToolSpec(client=mcp_client)
    tools = await mcp_tool_spec.to_tool_list_async()

    agent = FunctionAgent(
        tools=tools,
        llm=OpenAI(model="gpt-4o"),
        system_prompt=(
            "You are an assistant with access to IBGE Economia — CNAE Activities. "
            "You have 5 tools available."
        ),
    )

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

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.

LlamaIndex agents combine IBGE Economia — CNAE Activities tool responses with indexed documents for comprehensive, grounded answers. Connect 5 tools through Vinkius and query live data alongside vector stores and SQL databases in a single turn. ideal for hybrid search, data enrichment, and analytical workflows.

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 LlamaIndex 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 LlamaIndex via MCP

Follow these steps to integrate the IBGE Economia — CNAE Activities MCP Server with LlamaIndex.

Install dependencies

Run pip install llama-index-tools-mcp llama-index-llms-openai

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

Why Use LlamaIndex with the IBGE Economia — CNAE Activities MCP Server

LlamaIndex provides unique advantages when paired with IBGE Economia — CNAE Activities through the Model Context Protocol.

Data-first architecture: LlamaIndex agents combine IBGE Economia — CNAE Activities tool responses with indexed documents for comprehensive, grounded answers

Query pipeline framework lets you chain IBGE Economia — CNAE Activities tool calls with transformations, filters, and re-rankers in a typed pipeline

Multi-source reasoning: agents can query IBGE Economia — CNAE Activities, a vector store, and a SQL database in a single turn and synthesize results

Observability integrations show exactly what IBGE Economia — CNAE Activities tools were called, what data was returned, and how it influenced the final answer

IBGE Economia — CNAE Activities + LlamaIndex Use Cases

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

Hybrid search: combine IBGE Economia — CNAE Activities real-time data with embedded document indexes for answers that are both current and comprehensive

Data enrichment: query IBGE Economia — CNAE Activities to augment indexed data with live information before generating user-facing responses

Knowledge base agents: build agents that maintain and update knowledge bases by periodically querying IBGE Economia — CNAE Activities for fresh data

Analytical workflows: chain IBGE Economia — CNAE Activities queries with LlamaIndex's data connectors to build multi-source analytical reports

IBGE Economia — CNAE Activities MCP Tools for LlamaIndex (5)

These 5 tools become available when you connect IBGE Economia — CNAE Activities to LlamaIndex 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 LlamaIndex

Ready-to-use prompts you can give your LlamaIndex 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 LlamaIndex

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

BasicMCPClient not found

Install: pip install llama-index-tools-mcp

IBGE Economia — CNAE Activities + LlamaIndex FAQ

Common questions about integrating IBGE Economia — CNAE Activities MCP Server with LlamaIndex.

How does LlamaIndex connect to MCP servers?

Use the MCP client adapter to create a connection. LlamaIndex discovers all tools and wraps them as query engine tools compatible with any LlamaIndex agent.

Can I combine MCP tools with vector stores?

Yes. LlamaIndex agents can query IBGE Economia — CNAE Activities tools and vector store indexes in the same turn, combining real-time and embedded data for grounded responses.