Free Finance APIs

Binlist gives you free access to a database of Bank Identification Numbers (BINs), the first 6-8 digits of any credit or debit card number that identify the issuing bank and card type.

Econdb provides free access to global macroeconomic data including GDP, inflation, unemployment, and hundreds of other economic indicators from official sources like central banks and statistical agencies.

The U.S.

The Indian Mutual Fund API gives you free access to the complete history of all mutual funds registered in India.

Portfolio Optimizer is a free REST API that helps you analyze and optimize investment portfolios using advanced mathematical models.

Razorpay IFSC API lets you look up Indian bank branch details using an 11-character IFSC code — completely free and without authentication.

SEC EDGAR Data API provides free access to financial filings, annual reports (10-K), quarterly reports (10-Q), and ownership data for all publicly traded US companies.

The WallStreetBets API gives you real-time sentiment data extracted from Reddit's r/WallStreetBets community, showing which stocks are being discussed and whether the mood is bullish or bearish.

Yahoo Finance provides unofficial access to stock quotes, historical prices, currency exchange rates, and cryptocurrency data through community-maintained libraries and endpoints.