Official KoSIT EN 16931 & XRechnung XML validator issuing signed Ed25519 VCs. Zero retention.
Streamable HTTP
https://agent-gateway-i3gust564q-ey.a.run.app/mcpclaude mcp add --transport http en16931-validator https://agent-gateway-i3gust564q-ey.a.run.app/mcpThis server publishes no installable package.