Data Validation

Reference data your agents won't hallucinate: time zones, public holidays and business days, sunrise and moon phases, unit conversion, country, currency and language facts, airports, US ZIP codes, NAICS codes, daily ECB exchange rates, and validators for IBAN, email, phone and card numbers. One key, every endpoint, JSON only, with an MCP server for agents. Operated by APIDirectory.

Validate EN 16931 e-invoices: XRechnung, ZUGFeRD, Factur-X, Peppol BIS

Validates Turkish national ID, tax number, IBAN, phone, plate and parses addresses

Checks whether an email address or domain belongs to a disposable email provider

Email validation via format checks, MX lookup, SMTP probing and catch-all detection, returning JSON for automated workflows