vatnode/vatnode-mcp

Official Model Context Protocol server for **vatnode** — VAT validation and EU tax data for AI agents.
Lets AI assistants (Claude Desktop, Cursor, ChatGPT, Continue, Cline, …) look up VAT rates, check VAT number formats, and validate VAT IDs against the EU VIES service without leaving the chat.
- **Free, offline** — VAT rates and format checks for 45 European countries, no account needed
- **Live validation** — verify EU VAT numbers against VIES, get the registered company + the VIES consultation number (requires a free vatnode API key; the consultation number is produced once you set your own VAT as requester in dashboard Settings)
- **Five focused tools** — well-described for accurate agent tool selection
- Pure stdio, zero hosted dependencies, runs locally via npx
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Tools
| Tool | Free | Description |
|---|---|---|
| get_country_vat_rates | ✅ | Standard / reduced / super-reduced / parking rates + VAT number format for a country |
| list_eu_vat_rates | ✅ | All 27 EU member states (plus XI for Northern Ireland) at once |
| check_vat_format | ✅ | Offline syntactic check of a VAT number against the country regex |
| list_supported_countries | ✅ | All 45 supported countries and which ones support full VIES validation |
| validate_vat_number | 🔑 | Live VIES validation — returns validity, company name, address, registration date, and (when a requester VAT is set in dashboard Settings) the VIES consultation number |
Free tools work fully offline — data is bundled via eu-vat-rates-data and updated daily from the European Commission TEDB.
validate_vat_number requires a vatnode API key. The free tier includes a monthly request quota — get one in 30 seconds.
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Install
Claude Desktop
Add to your claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/claude_desktop_config.json):
Restart Claude Desktop. The vatnode tools will appear in the tool picker.
You can omit VATNODE_API_KEY if you only need the free tools (rates, format checks).
Cursor
Settings → MCP → Add new server:
ChatGPT (custom connectors / Apps SDK)
Configure as an stdio MCP server with the same npx -y vatnode-mcp command. See the Apps SDK docs.
Continue / Cline / other clients
Any MCP-compatible client can connect — point it at npx -y vatnode-mcp and (optionally) pass VATNODE_API_KEY via environment.
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Get an API key
validate_vat_number requires a vatnode account. The platform also offers things the MCP doesn't expose:
- Webhooks for VAT status changes (monitor a customer's VAT continuously)
- Bulk validation
- National-database fallback when VIES is down
- VIES consultation numbers (a timestamped record that the check was made against VIES)
- Per-key rate limiting + dashboard analytics
**Sign up free →**
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Example session
> **You:** What's the VAT rate in Finland and Germany?