CNAE is the official Brazilian classification of economic activities. It is used for business licensing, tax registration, and market research.

How many activity codes are available?

The taxonomy includes 1,332 subclasses, which are the most specific codes used for business registration.

Which AI clients can use this MCP?

You can use this with any MCP-compatible client, including Claude, Cursor, Windsurf, and VS Code.

Does this MCP provide real-time data?

Yes, the MCP provides access to the official IBGE economic taxonomy data.

Can I use this for tax registration purposes?

Yes, the codes provided are the official ones used for CNPJ registration and tax compliance in Brazil.

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.

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Connect Ibge Economia Cnae Activities to ChatGPT and Claude

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Navigate Brazil's entire economic taxonomy with your agent.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 5 capabilities

We ship only the actions that matter.

Capability set01 / 02

01-03

3 capabilities in this set.

Part of 5 available through IBGE.

01
Get subclasse cnae
This capability retrieves specific details for a single CNAE subclass. Use it to get the exact definition of a granular activity code.
02
List classes cnae
This capability lists all CNAE classes within a specific division. It helps your agent narrow down industry categories.
03
List divisoes cnae
This capability pulls all divisions belonging to a specific section. It is the first step in navigating the economic hierarchy.

Capability set02 / 02

04-05

2 capabilities in this set.

Part of 5 available through IBGE.

04
List secoes cnae
This capability returns the 21 top-level economic sections from A to U. It provides the broadest overview of the taxonomy.
05
List subclasses por classe
This capability lists every subclass contained within a specific CNAE class. It is useful for finding the most specific registration codes.

Real work

What teams actually run

Automated Business Onboarding

An agent identifies the correct CNAE code for a new client based on their business description.

Market Segmentation

A researcher uses the agent to group companies into specific economic divisions for analysis.

Tax Compliance Auditing

An agent checks if a company's registered activity matches its actual operations using official codes.

Regulatory Mapping

A developer builds a capability that maps business types to specific licensing requirements via CNAE classes.

Automate a task

Put IBGE to work on one thing.

Step-by-step automations your AI runs through this Connector: the workflow, the prompts to start with, and the exact capabilities behind each move.

One connector, every AI

IBGE works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

Building your own app? The connector is yours to use.

You don't need a client to put IBGE to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

893ms average. Fast in production.

IBGE is checked daily against the live service.

Daily averagePeak 1146ms

Oct 3Today

Fastest day: 740ms
Slowest day: 1146ms
14-day trend: Slowing+37%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 5 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of IBGE, so you can see the experience inside your AI.

It does not authenticate your account with IBGE. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

IBGE Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_osdkqCkvGlycNC4F6BxyyfaGZKpA2XGxpToAjx24/mcp

Claude Desktop

Follow the steps below to connect in seconds.

1In Claude Desktop, open Settings → Connectors.
2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
3Click Add and start a new chat — IBGE capabilities are ready to use.

Configuration · claude_desktop_config.jsonCopy

{
  "mcpServers": {
    "ibge-economia-cnae-activities-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_osdkqCkvGlycNC4F6BxyyfaGZKpA2XGxpToAjx24/mcp"
    }
  }
}

Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? Set up IBGE in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work IBGE owners hand off.

This MCP is built for professionals working within the Brazilian regulatory and economic environment.

01
Accountants
They hand off the task of finding correct tax classification codes to their agent.
02
Fintech Developers
They use the agent to automate business verification during user onboarding.
03
Market Analysts
They delegate the mapping of industry sectors and divisions to their agent.
04
Compliance Officers
They use the agent to ensure business activities match official regulatory standards.

FAQ

Questions IBGE owners ask.

01
What is the CNAE?
CNAE is the official Brazilian classification of economic activities. It is used for business licensing, tax registration, and market research.
02
How many activity codes are available?
The taxonomy includes 1,332 subclasses, which are the most specific codes used for business registration.
03
Which AI clients can use this MCP?
You can use this with any MCP-compatible client, including Claude, Cursor, Windsurf, and VS Code.
04
Does this MCP provide real-time data?
Yes, the MCP provides access to the official IBGE economic taxonomy data.
05
Can I use this for tax registration purposes?
Yes, the codes provided are the official ones used for CNPJ registration and tax compliance in Brazil.
06
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.

Explore

More in Data Analytics

Connect IBGE to Claude, Cursor, ChatGPT & more

Your AI does the work. We keep it safe and sound.

Each Connector runs inside its own sealed environment.

One switch stops every agent. Instantly.

Spending limits that pause instead of surprise.

We ship only the actions that matter.

01-03

Get subclasse cnae

List classes cnae

List divisoes cnae

04-05

List secoes cnae

List subclasses por classe

What teams actually run

Automated Business Onboarding

Market Segmentation

Tax Compliance Auditing

Regulatory Mapping

Building your own app? The connector is yours to use.

IBGE Connector

Claude Desktop

Accountants

Fintech Developers

Market Analysts

Compliance Officers

What is the CNAE?

How many activity codes are available?

Which AI clients can use this MCP?

Does this MCP provide real-time data?

Can I use this for tax registration purposes?

Why do I need CNAE codes?

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