Aether Layer: EU VAT number validation (VIES) for Gemini CLI

com.aether-layer/eu-vat-validate

Validates EU VAT numbers: local format/checksum for 27 states + XI, then VIES (cached 24 h).

client:Gemini CLI transport:streamable-http tools:2

Install Aether Layer: EU VAT number validation (VIES) in Gemini CLI

~/.gemini/settings.json · windows: %USERPROFILE%\.gemini\settings.json

{
  "mcpServers": {
    "eu-vat-validate": {
      "httpUrl": "https://aether-layer.com/api/mcp?src=mcpreg"
    }
  }
}

Gemini expands $VAR and ${VAR} inside env values, so a secret can live in your shell rather than this file. Gemini CLI docs