Finance & Economic Data APIs
Exchange rates, market data, filings and economic indicators. 7 listed: 5 completely free, 4 usable without an API key.
Frankfurter
Open-source exchange rates API based on European Central Bank reference rates.
ECB Data Portal API
Official European Central Bank statistics, including exchange rates.
FRED API
Hundreds of thousands of US and international economic time series.
World Bank Indicators API
Development indicators for every country, from GDP to education.
Alpha Vantage
Stock, forex, crypto and technical-indicator data.
CoinGecko API
Crypto prices, market caps and exchange data.
SEC EDGAR APIs
US public company filings and XBRL financial data.
Comparing finance & economic data APIs
| API | Auth | Pricing model | Docs |
|---|---|---|---|
| Frankfurter | No key | Free | frankfurter.dev |
| ECB Data Portal API | No key | Free | data.ecb.europa.eu |
| FRED API | API key | Free | fred.stlouisfed.org |
| World Bank Indicators API | No key | Free | datahelpdesk.worldbank.org |
| Alpha Vantage | API key | Free tier | alphavantage.co |
| CoinGecko API | API key | Free tier | docs.coingecko.com |
| SEC EDGAR APIs | No key | Free | sec.gov |
Not sure which to pick? Read our 12-point API checklist and guide to API pricing models.