• VALIDATION
  • METADATA
  • AUDIT
  • HUMAN

How to verify international VAT numbers with your AI

Connect VATNode to your AI client once. From then on, your agent handles the validation and company lookups for you.

Ask AI about this page

Short answer

How can I use AI to check VAT numbers?

Your AI uses VATNode to check if a VAT number is valid and then pulls the associated company metadata. You get a clear confirmation of the business identity.

The outcomes

What you get from your agent

Your AI processes the request and delivers one of these results.

VALIDATION

Confirmed VAT status

The AI checks the number against official records. You get a clear yes or no on whether the number is active.

METADATA

Company details

The AI pulls the registered name and address. This ensures the business you are dealing with matches the tax ID.

AUDIT

Verification logs

Your agent can summarize the results of multiple checks. This creates a record of the business identities you've verified.

HUMAN

Manual review needed

If a number is invalid or the data is missing, the AI flags it. You decide how to handle the failed verification.

The workflow

What your AI does when a VAT number arrives.

The AI handles the heavy lifting of querying tax databases.

  1. Check validity

    The AI sends the number to the tax authority database to see if it exists and is active.

    validate_vat_number

  2. Fetch company info

    Once the number is confirmed, the AI grabs the official business registration data.

    get_company_by_vat

  3. Compare data

    The AI compares the retrieved company name against the name you provided to catch mismatches.

    get_company_by_vat

  4. Report findings

    The agent presents a summary of the tax status and the company's registered details.

    validate_vat_number

Try it

Copy these to start.

Use these prompts to trigger the verification process.

Starting points

Replace the bracketed text with your actual data, like a specific VAT number or a spreadsheet reference.

VATNode Connector

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

Connector linkhttps://edge.vinkius.com/vk_preview_rVgCaYN6IqoFGb8gbWGWGQwKFiAb9VZIzTfpWWVP/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 — VATNode capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "vatnode-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_rVgCaYN6IqoFGb8gbWGWGQwKFiAb9VZIzTfpWWVP/mcp"
    }
  }
}
Copy into chat04

  • Verify if the VAT number DE123456789 is currently valid.

  • Check the VAT number FR987654321 and tell me the registered company name.

  • Look up the company details for VAT number GB123456789 from my customer list.

  • Validate this list of VAT numbers from my spreadsheet and flag any that are invalid.

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

Start here

Connect VATNode once, then ask.

One connection is all it takes. Your credentials stay encrypted, and you can immediately start using these tools in your preferred AI client.

Connect VATNode to your AI

FAQ

How this task behaves

  • 01

    Can the AI change a company's registered VAT status?

    No. The AI can only read and verify data from official records; it cannot modify any tax information.

  • 02

    Does the AI automatically approve invoices based on these checks?

    No. The AI provides the verification data, but you must perform the final approval yourself.

  • 03

    What happens if a VAT number is invalid?

    The AI will tell you the number is invalid and will not be able to retrieve company metadata for it.

  • 04

    Can I verify VAT numbers from any country?

    Yes, as long as the number is part of the supported international tax databases accessible through the tools.

  • 05

    Does the AI store the company data it finds?

    No. The AI only retrieves the data to answer your specific request in the current session.

  • More questions about VATNode? The Connector page answers them. See everything the VATNode Connector can do

Connect VATNode to Claude, Cursor, ChatGPT & more