An astronaut overseeing a futuristic data hub
Download PDFMarkdown Version

Connect isvat to ChatGPT, Claude and Gemini

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. Verify tax IDs through natural conversation without manual lookups.

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

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.

A futuristic MCP client docking bay
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 · 3 capabilities

We ship only the actions that matter.

Capability set01 / 01

01-03

3 capabilities in this set.

Part of 3 available through isvat.

  1. 01

    Check API status

    This capability checks if the isvat API is currently online and operational.

  2. 02

    Validate eu vat

    Use this to verify if a specific European VAT number is valid.

  3. 03

    Validate multiple vat

    This capability validates a batch of European VAT numbers at the same time.

Real work

What teams actually run

01

Financial Due Diligence

Your agent verifies the tax legitimacy of potential business partners during audits.

02

Invoicing Automation

The agent checks VAT numbers before invoices are sent to ensure compliance.

03

Lead List Cleaning

Sales teams use the agent to validate tax IDs in a batch for new European prospects.

04

Compliance Monitoring

Accountants use the agent to maintain an accurate record of verified tax IDs.

Automate a task

Put isvat 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

isvat 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.

ClaudeClaudeChatGPTChatGPTGeminiGeminiPerplexityPerplexityGrokGrokMicrosoft CopilotMicrosoft CopilotCursorCursorVS CodeVS CodeWindsurfWindsurfJetBrainsJetBrainsClineClineLangChainLangChainVercel AI SDKVercel AI SDKLovableLovableZ.aiZ.aiRaycastRaycastQwen CodeQwen CodeKimi CodeKimi CodeLe ChatLe Chat

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

You don't need a client to put isvat 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

890ms average. Fast in production.

isvat is checked daily against the live service.

Daily averagePeak 1084ms
Oct 3Today
Fastest day
634ms
Slowest day
1084ms
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. 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 isvat, so you can see the experience inside your AI.

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

isvat Connector

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

Connector linkhttps://edge.vinkius.com/vk_preview_W2NhBrGAIxd5ffyKLEpY2J1ENAhlAkdwD4MLqDAR/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 — isvat capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "isvat-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_W2NhBrGAIxd5ffyKLEpY2J1ENAhlAkdwD4MLqDAR/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 isvat in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work isvat owners hand off.

This MCP is built for professionals handling European financial data and tax compliance.

  • 01

    Accountants

    They hand off VAT compliance monitoring and status retrieval to their AI agent.

  • 02

    Sales Operations

    They use the agent to verify tax IDs for new lead lists without manual searching.

  • 03

    Financial Analysts

    They delegate rapid corporate tax data audits to their AI client.

FAQ

Questions isvat owners ask.

  • 01

    Do I need an API key for isvat?

    No, isvat is a public and free service, so no API key is required to use this MCP.

  • 02

    Which AI clients can I use with this MCP?

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

  • 03

    Can I check more than one VAT number at a time?

    Yes, the validate_multiple_vat capability allows your agent to verify multiple European VAT numbers in a single request.

  • 04

    How do I know if the service is working?

    You can use the check_api_status capability to confirm the isvat API is operational.

  • 05

    Is this MCP hosted by Vinkius?

    Yes, Vinkius hosts and manages the MCP so it is ready to use immediately after you connect.

  • 06

    Is an API Key required for isvat?

    No. isvat is a free and public service. This server works out of the box without any static credentials required.

  • 07

    Which countries are supported?

    isvat supports VAT validation for all countries within the European Union (EU).

  • 08

    Does the agent retrieve company addresses?

    The isvat API primarily returns a boolean validation status. For detailed company metadata, including names and addresses, consider using the VATNode or BrasilAPI servers.

Explore

More in Finance Accounting

Suggestions

Connect isvat to Claude, Cursor, ChatGPT & more