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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Use IBGE with your AI.

Connect your account once and let the AI you already use work with it, without building another integration. Navigate Brazil's entire economic taxonomy: 1,332 CNAE activity codes across 21 sectors, 87 divisions, 285 groups. the definitive resource for business classif

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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.

Complete set · 5 capabilities

The complete IBGE capability set.

These are the exact actions your AI can choose when you ask it to work with IBGE.

Capability set01 / 02

01-03

3 capabilities in this set.

Part of 5 available through IBGE.

01
Get subclasse cnae
Get CNAE subclass details
02
List classes cnae
G., 62 for IT activities). List CNAE classes within a division
03
List divisoes cnae
G., A for Agriculture, C for Manufacturing). List CNAE divisions within a section

Capability set02 / 02

04-05

2 capabilities in this set.

Part of 5 available through IBGE.

04
List secoes cnae
List all 21 CNAE economic sections (A-U)
05
List subclasses por classe
G., 62015). List all subclasses within a CNAE class

Observed, not estimated

826ms average. Fast in production.

IBGE is checked daily against the live service.

Daily averagePeak 958ms

Aug 20Today

Fastest day: 676ms
Slowest day: 958ms
14-day trend: Stable-4%

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

FAQ

Questions IBGE owners ask.

01
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

Use IBGE with your AI.

The complete IBGE capability set.

01-03

Get subclasse cnae

List classes cnae

List divisoes cnae