Download PDFMarkdown Version
ClaudeChatGPTPerplexityGeminiMicrosoft CopilotRaycastMeta AIGrokZ.aiQwenKimi
DeepSeekMistralCursorVS CodeWindsurfJetBrainsClineLovableVercel AI SDKLangChain

Use CNPJ Validator with your AI.

Connect your account once and let the AI you already use work with it, without building another integration. Verify the mathematical validity and structure of Brazilian CNPJ numbers.

Included with plan

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

Waiting for input…

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

ChatGPTClaudeCursorPerplexityGeminiMicrosoft CopilotRaycastMeta AI

Complete set · 3 capabilities

The complete CNPJ Validator capability set.

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

Capability set01 / 01

01-03

3 capabilities in this set.

Part of 3 available through CNPJ Validator.

  1. 01

    Analyze cnpj structure

    Deconstructs a CNPJ into its constituent parts

  2. 02

    Validate cnpj format

    Validates a CNPJ string using checksum algorithm

  3. 03

    Batch validate cnpjs

    Performs high-volume validation on a list of identifiers

Observed, not estimated

633ms average. Fast in production.

CNPJ Validator is checked daily against the live service.

Daily averagePeak 837ms
Aug 20Today
Fastest day
477ms
Slowest day
837ms
14-day trend
Slowing+21%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 3 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 CNPJ Validator, so you can see the experience inside your AI.

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

CNPJ Validator Connector

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

Connector linkhttps://edge.vinkius.com/vk_preview_h5b23zF0Z9FsG4JVtouuZu9rJr0WPyPK7WWuZJWt/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — CNPJ Validator capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "cnpj-validator-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_h5b23zF0Z9FsG4JVtouuZu9rJr0WPyPK7WWuZJWt/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 CNPJ Validator owners ask.

  • 01

    Does this capability require an internet connection to the Brazilian Federal Revenue?

    No. The validate_cnpj_format and other capabilities use a local checksum algorithm (weighted summation) to verify the mathematical validity of the CNPJ without making external API calls to federal databases.

  • 02

    Can I validate multiple CNPJs at once?

    Yes, you can use the batch_validate_cnpjs capability to process an array of CNPJ strings in a single operation and receive summary statistics.

  • 03

    What information is returned when analyzing a CNPJ?

    By using analyze_cnpj_structure, you will receive the root identifier, branch identifier, check digits, and the inferred Brazilian state (UF) based on regional mapping rules.

Explore

More in Finance

Suggestions