• CLEAN DATA
  • BATCHED
  • VALIDATED
  • HUMAN

How to format Brazilian ID numbers with your AI

Connect this MCP to your AI client to clean up messy tax ID data. Once connected, your agent handles the masking for you.

Ask AI about this page

Short answer

How can I format CPF and CNPJ numbers using AI?

Your AI uses the format_batch tool to apply standard Brazilian masks to raw digit strings. You'll get a clean list of formatted CPF and CNPJ numbers. This breakdown shows how it works.

The results you get.

Clean, readable data.

The AI processes your raw data and delivers these specific outcomes.

CLEAN DATA

Standardized ID masks

The AI applies the correct punctuation to every CPF and CNPJ string. You get valid, human-readable formats instead of long digit strings.

BATCHED

Bulk processing

The tool handles large lists of numbers at once. You don't have to format IDs one by one.

VALIDATED

Type identification

The agent distinguishes between CPF and CNPJ patterns. It ensures the right mask is applied to the right ID type.

HUMAN

Review required

The AI handles the math and the masks, but you should still check the final list for any data entry errors.

The workflow

What your AI does when the data arrives.

The AI takes your unformatted text and runs it through a specific formatting logic.

  1. Ingest raw strings

    Your agent reads the raw, unformatted numbers from your provided source.

    format_batch

  2. Identify ID types

    The AI looks at the length and structure of each string to tell if it is a CPF or a CNPJ.

    format_batch

  3. Apply masks

    The tool inserts the dots, dashes, and slashes required for Brazilian standards.

    format_batch

  4. Output formatted list

    The agent presents the final, masked list back to you in your chat window.

    format_batch

Try it

Copy these to start.

Use these prompts to trigger the formatting task immediately.

Starting points

Replace the bracketed text with your actual data source, like a specific spreadsheet or a text block.

CPF/CNPJ Batch Processor Connector

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

Connector linkhttps://edge.vinkius.com/vk_preview_lFNyu8UlZFkhP0wRgSvyc2AGW6mslkNnLO6XUQ8S/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 — CPF/CNPJ Batch Processor capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "cpfcnpj-batch-processor-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_lFNyu8UlZFkhP0wRgSvyc2AGW6mslkNnLO6XUQ8S/mcp"
    }
  }
}
Copy into chat04

  • Format this list of CPF numbers from my Google Sheet: [paste link or data]

  • Clean up these CNPJ strings in my current text file using the batch processor.

  • Take the raw digits in this CSV and turn them into formatted Brazilian IDs.

  • Format all the IDs in this chat history into standard CPF and CNPJ masks.

  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Start here

Connect CPF/CNPJ Batch Processor once, then ask.

Just click the button to link the MCP to your client. Your credentials stay encrypted and the setup is instant.

Connect CPF/CNPJ Batch Processor to your AI

FAQ

Common questions

  • 01

    Can the AI validate if a CPF is real?

    No. This tool only applies formatting masks to existing digit strings. It does not perform checksum validation to see if the ID is legally valid.

  • 02

    Will it change my original files?

    No. The AI only reads the data you provide and generates a new, formatted version in your chat. It cannot write back to or overwrite your original files.

  • 03

    Does it work for both CPF and CNPJ?

    Yes. The tool identifies the difference between the two and applies the correct mask for each.

  • 04

    Can I format one number at a time?

    Yes. While it is built for batches, you can give it a single string and it will format it correctly.

  • 05

    Do I need to tell it which mask to use?

    No. The AI detects the number type automatically and applies the standard Brazilian mask.

  • More questions about CPF/CNPJ Batch Processor? The Connector page answers them. See everything the CPF/CNPJ Batch Processor Connector can do

Connect CPF/CNPJ Batch Processor to Claude, Cursor, ChatGPT & more