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mcp/harbor
Grok

VAT Validator MCP for Grok

io.github.ojaskord/vat-validator-mcp

Validate EU, UK, AU VAT numbers for AI agents. EU ViDA e-invoicing compliance.

client:Grok transport:streamable-http runtime:npm tools:2

Install VAT Validator MCP in Grok

.mcp.json (in your project root) 

{
  "mcpServers": {
    "vat-validator-mcp": {
      "type": "http",
      "url": "https://vat-validator-mcp-production.up.railway.app"
    }
  }
}

Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs

What Grok can do once it is connected

VAT Validator MCP in other clients

VAT Validator MCP MCP server