Validate VAT numbers and calculate VAT rates for EU businesses
apiKey
✓
✓
Aletheia
Access insider trading data, earnings call analysis, and financial statements
apiKey
✓
✓
Alpaca
Realtime and historical market data on US equities and ETFs
apiKey
✓
✓
Alpha Vantage
Realtime and historical stock and forex market data
apiKey
✓
?
apilayer marketstack
Real-time, intraday, and historical stock market data API
apiKey
✓
?
Banco do Brasil
Access financial data and transactions for Banco do Brasil accounts
OAuth
✓
✓
Billplz
Online payment platform for billing and invoice management
apiKey
✓
?
Binlist
Lookup for IIN/BIN data to identify card issuer information
No
✓
?
Boleto.Cloud
Generate Boletos for payments in Brazil programmatically
apiKey
✓
?
Citi
Access Citigroup banking data, accounts, and transactions
apiKey
✓
?
Econdb
Access global macroeconomic and market data via a simple REST API
No
✓
✓
Fed Treasury
US Department of the Treasury fiscal and financial data
No
✓
?
Finage
Realtime and historical data for stocks, crypto, indices, and ETFs
apiKey
✓
?
Financial Modeling Prep
Realtime and historical stock data and financial statements
apiKey
✓
?
Finnhub
Realtime APIs and WebSocket for stocks, forex, and cryptocurrencies
apiKey
✓
?
FRED
Economic data from the Federal Reserve Bank of St. Louis
apiKey
✓
✓
Front Accounting APIs
Multilingual and multicurrency accounting API for small businesses
OAuth
✓
✓
Hotstoks
Stock market data powered by SQL for custom analytics
apiKey
✓
✓
IEX Cloud
Realtime and historical US stock and market data API
apiKey
✓
✓
IG
Access spread betting and CFD market data
apiKey
✓
?
Indian Mutual Fund
Get complete history and NAV of Indian mutual funds
No
✓
?
Intrinio
Access a wide range of financial data feeds and analytics
apiKey
✓
?
Klarna
Payments and financing solutions for e-commerce integration
apiKey
✓
?
MercadoPago
Integrate with Mercado Pago for online payments in Latin America
apiKey
✓
?
Mono
Connect with users’ bank accounts and access transaction data in Africa
apiKey
✓
?
Moov
Simplify money movement: send, receive, and store funds via API
apiKey
✓
?
Nordigen
Access bank account and transaction data using PSD2-compliant APIs
apiKey
✓
?
OpenFIGI
Retrieve equity, index, futures, and options symbology from Bloomberg
apiKey
✓
✓
Plaid
Connect with users’ bank accounts and access financial transactions securely
apiKey
✓
?
Polygon
Comprehensive stock, forex, and crypto market data API
apiKey
✓
?
Portfolio Optimizer
Analyze and optimize investment portfolios with risk metrics
No
✓
✓
Razorpay IFSC
Retrieve IFSC (Indian Financial System Code) and bank branch data
No
✓
?
Real Time Finance
Access realtime stock data via WebSocket API
apiKey
✗
?
SEC EDGAR Data
Access annual and quarterly reports from public US companies
No
✓
✓
SmartAPI
Create end-to-end brokerage services and trading apps
apiKey
✓
?
StockData
Realtime, intraday, and historical market data, news, and sentiment analysis
apiKey
✓
✓
Styvio
Realtime and historical stock data with sentiment insights
apiKey
✓
?
Tradier
US equity and options market data via REST and WebSocket APIs
OAuth
✓
✓
Twelve Data
Realtime and historical stock, forex, and crypto market data API
apiKey
✓
?
WallstreetBets
Sentiment analysis of WallstreetBets Reddit stock discussions
No
✓
?
Yahoo Finance
Realtime and historical stock, forex, and crypto market data
apiKey
✓
✓
YNAB
Budgeting and personal finance management API
OAuth
✓
✓
Zoho Books
Online accounting software for businesses with API integration
OAuth
✓
?
Best Finance APIs for Developers
A finance API allows developers to retrieve stock prices, market indices, earnings data, company financials, and investment metrics programmatically. These APIs are the foundation of fintech apps, trading dashboards, and personal finance tools.
CodeHelper's curated finance API collection includes APIs covering equities, ETFs, options, company fundamentals, and macroeconomic indicators.
What to look for in a finance API
Data latency: Real-time trading apps require live data feeds, while portfolio trackers can often use 15-minute delayed data available on free tiers.
Historical depth: For backtesting investment strategies, APIs with 10+ years of daily OHLCV data are essential.
Fundamental data: P/E ratios, earnings, and balance sheets enable more sophisticated investment analysis applications.
How to use this API directory
Browse the curated list of APIs below.
Click any API to visit its documentation.
Check the Auth column to understand what credentials you need.
Whether you are building a stock screener or a personal finance tracker, this free curated API directory saves you hours of research.