Top 44 Finance APIs For Developers - Public APIs

Abstract VAT Validation - Validate VAT numbers and calculate VAT rates
Aletheia - Insider trading data, earnings call analysis, financial statements, and more
Alpaca - Realtime and historical market data on all US equities and ETFs
Alpha Vantage - Realtime and historical stock data
Atom Finance - Atom Finance provides access to market, earnings and news data
Banco do Brasil - All Banco do Brasil financial transaction APIs
Billplz - Payment platform
Binlist - Public access to a database of IIN/BIN information
Boleto.Cloud - A api to generate boletos in Brazil
Citi - All Citigroup account and statement data APIs
Econdb - Global macroeconomic data
Fed Treasury - U.S. Department of the Treasury Data
Finage - Finage is a stock, currency, cryptocurrency, indices, and ETFs real-time & historical data provider
Financial Modeling Prep - Realtime and historical stock data
Finnhub - Real-Time RESTful APIs and Websocket for Stocks, Currencies, and Crypto
FRED - Economic data from the Federal Reserve Bank of St. Louis
Front Accounting APIs - Front accounting is multilingual and multicurrency software for small businesses
IEX Cloud - Realtime & Historical Stock and Market Data
IG - Spreadbetting and CFD Market Data
Indian Mutual Fund - Get complete history of India Mutual Funds Data
Intrinio - A wide selection of financial data feeds
Kite Connect - Stock market investment and trading platform
Klarna - Klarna payment and shopping service
MercadoPago - Mercado Pago API reference - all the information you need to develop your integrations
Mono - Connect with users’ bank accounts and access transaction data in Africa
Moov - The Moov API makes it simple for platforms to send, receive, and store money
Nordigen - Connect to bank accounts using official bank APIs and get raw transaction data
OpenFIGI - Equity, index, futures, options symbology from Bloomberg LP
Plaid - Connect with user's bank accounts and access transaction data
Polygon - Historical stock market data
Portfolio Optimizer - Portfolio analysis and optimization
Razorpay IFSC - Indian Financial Systems Code (Bank Branch Codes)
Real Time Finance - Websocket API to access realtime stock data
Repetiti - Repetiti 3d Printer Management Service
SEC EDGAR Data - API to access annual reports of public US companies
SmartAPI - Gain access to set of <SmartAPI> and create end-to-end broking services
StockData - Real-Time, Intraday & Historical Market Data, News and Sentiment API
Styvio - Realtime and historical stock data and current stock sentiment
Tradier - US equity/option market data (delayed, intraday, historical)
Twelve Data - Stock market data (real-time & historical)
Validate Swift/BIC - Validates BIC/SWIFT code.
WallstreetBets - WallstreetBets Stock Comments Sentiment Analysis
YNAB - Budgeting & Planning
Zoho Books - Online accounting software, built for your business