Standard Data APIs.
Reference data APIs serve the lists everyone copies into a constants file and never updates — countries, currencies, languages, timezones, ISO codes. Query them instead of shipping a stale table that breaks the day a code changes.
Also called reference data APIs, lookup APIs or ISO code APIs54 services in this categoryStandard Data APIs
54 servicesValidate UK Postcodes API
Validate a UK postcode from your code and get a true or false back in one request. Built for checkout, signup and address cleanup. Free tier, no card.
ApyHubVerifiedHosted on ApyHubCountry Information API
Look up any country by its two-letter code and get its name, currency, calling codes, and full list of states or regions with ISO 3166-2 codes. Free tier.
ApyHubVerifiedHosted on ApyHubLanguage Detection API
Automatically detect the language of any text. Get the language name, ISO 639-1 and 639-3 codes, script and a confidence score as JSON. Try it free.
ApyHubVerifiedHosted on ApyHubCurrencies Dictionary API
Get every world currency as JSON with its ISO 4217 code, English name and symbol. Ready for currency pickers, checkout and validation. Try it free.
ApyHubVerifiedHosted on ApyHubCountries Dictionary API
Get every country as JSON: two- and three-letter ISO codes, flag emoji, currency, & calling codes. Build country dropdowns & phone inputs in minutes. Free tier.
ApyHubVerifiedHosted on ApyHubMulti-Currency Converter API
Multi-currency converter API: send one source currency and a list of targets, get every exchange rate in one JSON response. Free tier, no card.
ApyHubVerifiedHosted on ApyHubWhich Standard Data API do you need?
The question you arrived with, and the endpoint that answers it.