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mcp/harbor
Claude Code

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

com.aether-layer/eu-vat-validate

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

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

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

run in your project directory 

claude mcp add --transport http eu-vat-validate https://aether-layer.com/api/mcp?src=mcpreg

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

What Claude Code can do once it is connected

Aether Layer: EU VAT number validation (VIES) in other clients

Aether Layer: EU VAT number validation (VIES) MCP server