Aether Layer: EU VAT number validation (VIES) for VS Code

com.aether-layer/eu-vat-validate

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

client:VS Code transport:streamable-http tools:2

Install Aether Layer: EU VAT number validation (VIES) in VS Code

.vscode/mcp.json

{
  "servers": {
    "eu-vat-validate": {
      "type": "http",
      "url": "https://aether-layer.com/api/mcp?src=mcpreg"
    }
  }
}

Requires agent mode. MCP: Open User Configuration puts the same block in every workspace. VS Code docs