VAT Validator MCP for ChatGPT

io.github.ojaskord/vat-validator-mcp

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

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

Install VAT Validator MCP in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://vat-validator-mcp-production.up.railway.app

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs