Validate EU VAT numbers with honest results and 100 free lookups
Connects to the EU VIES VAT validation service to verify VAT numbers for EU member states. Returns a clear valid, invalid, or unavailable result without guessing. Useful for businesses verifying customer tax IDs during checkout or compliance.
Try asking Muse: "Check if a customer's German VAT number is valid before processing their order"
Source: Found in the official MCP Registry (io.github.Lucrumist/vies-smoother) · First listed September 25, 2026
Each bar is one check, every 15 minutes. Green means it answered. Last checked 5 h ago.
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Sensitive: this app deals with your money. Only connect it if you are comfortable with Muse reading that information.
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Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
https://vantane.com/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
VIES Smoother is a remote MCP server, so any assistant that can add a custom connector by link can use it. Same link, same tools.
In ChatGPT, open Settings, then Connectors (called Apps & Connectors on some accounts).
Under Advanced settings, switch on Developer mode. That is what lets you add a connector by link.
Choose Create, give it a name, paste the link as the MCP server URL, and save. If it needs a sign-in, ChatGPT asks for it here.
Start a chat, open the tools menu, pick the connector, and ask. ChatGPT asks before it runs a tool the first time.
Custom connectors need a paid ChatGPT plan, and on Team, Enterprise and Edu accounts only an admin can add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in ChatGPT
In Claude, open Settings, then Connectors.
Choose Add custom connector, give it a name, and paste the link.
If it needs a sign-in, Claude sends you to it. Then turn the connector on in a chat from the tools menu and ask.
Custom connectors are available on paid Claude plans; on Team and Enterprise accounts an admin may need to add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in Claude
https://vantane.com/mcpResponse time at the last check: 1438ms. Worked in 97.3% of checks over 30 days.
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
validate_vatValidate a single EU VAT number. Costs 1 credit unless upstream is unavailable and there's no cache (then it's free and honest about it). Args: country_code: 2-letter EU member state code (e.g. DE, FR, EL, XI). vat_number: The VAT number without the country prefix. validate_vat_batchValidate up to 50 EU VAT numbers in one call. 1 credit per item that gets a real answer (unavailable_upstream items are free). Args: items: list of {"country_code": str, "vat_number": str}, max 50. https://vantane.com/mcpNot in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use VIES Smoother to help me. It is a free service with an MCP server at https://vantane.com/mcp. It needs an API key from vantane.com; ask me to enter it through your secure credential prompt. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
At the last check (November 13, 2026, 10:00 UTC) the endpoint was working, answering in 1438ms. Over the last 7 days it answered 100% of health checks. It is checked every 15 minutes.
It was screened on September 25, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
It exposes 2 tools, including validate_vat, validate_vat_batch. For example, you could ask Muse: "Check if a customer's German VAT number is valid before processing their order"
This listing was added from public sources (Found in the official MCP Registry (io.github.Lucrumist/vies-smoother)). If you build VIES Smoother, claim it to correct the details and get your badge.
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