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Abstract VAT Validation vs Citi

If you need a Finance API that's easy to integrate, go with Abstract VAT Validation.

Abstract VAT Validation

Validate VAT numbers and calculate VAT rates

Citi

All Citigroup account and statement data APIs

Abstract VAT Validation

  • Simple API key authentication
  • HTTPS supported
  • CORS enabled for frontend use

Citi

  • Simple API key authentication
  • HTTPS supported
FeatureAbstract VAT ValidationCiti
AuthenticationapiKeyapiKey
HTTPSYesYes
CORSYesUnknown

When to use which?

Abstract VAT Validation works directly from the browser with CORS enabled, making it better for frontend-only apps.