Finance APIs deliver stock prices, market data, banking information, and financial analytics. Build trading dashboards, portfolio trackers, or fintech applications with real-time financial data.
| Name | Description | Auth | HTTPS | CORS | Status |
|---|---|---|---|---|---|
| Aletheia | Insider trading data, earnings call analysis, financial statements, and more | apikey | Yes | yes | unknown |
| Alpaca | Realtime and historical market data on all US equities and ETFs | apikey | Yes | yes | unknown |
| apilayer marketstack | Real-Time, Intraday & Historical Market Data API | apikey | Yes | unknown | unknown |
| Banco do Brasil | All Banco do Brasil financial transaction APIs | oauth | Yes | yes | unknown |
| Bank Data API | Instant IBAN and SWIFT number validation across the globe | apikey | Yes | unknown | unknown |
| Billplz | Payment platform | apikey | Yes | unknown | unknown |
| Boleto.Cloud | A api to generate boletos in Brazil | apikey | Yes | unknown | unknown |
| Citi | All Citigroup account and statement data APIs | apikey | Yes | unknown | unknown |
| Econdb | Global macroeconomic data | none | Yes | yes | unknown |
| Fed Treasury | U.S. Department of the Treasury Data | none | Yes | unknown | unknown |
| Financial Modeling Prep | Realtime and historical stock data | apikey | Yes | unknown | unknown |
| Finnhub | Real-Time RESTful APIs and Websocket for Stocks, Currencies, and Crypto | apikey | Yes | unknown | unknown |
| FRED | Economic data from the Federal Reserve Bank of St. Louis | apikey | Yes | yes | unknown |
| Front Accounting APIs | Front accounting is multilingual and multicurrency software for small businesses | oauth | Yes | yes | unknown |
| Hotstoks | Stock market data powered by SQL | apikey | Yes | yes | unknown |
| IEX Cloud | Realtime & Historical Stock and Market Data | apikey | Yes | yes | unknown |
| IG | Spreadbetting and CFD Market Data | apikey | Yes | unknown | unknown |
| Indian Mutual Fund | Get complete history of India Mutual Funds Data | none | Yes | unknown | unknown |
| Klarna | Klarna payment and shopping service | apikey | Yes | unknown | unknown |
| Marketstack | Real-Time, Intraday & Historical Market Data API | apikey | Yes | unknown | unknown |
| MercadoPago | Mercado Pago API reference - all the information you need to develop your integrations | apikey | Yes | unknown | unknown |
| Moov | The Moov API makes it simple for platforms to send, receive, and store money | apikey | Yes | unknown | unknown |
| Nordigen | Connect to bank accounts using official bank APIs and get raw transaction data | apikey | Yes | unknown | unknown |
| OpenFIGI | Equity, index, futures, options symbology from Bloomberg LP | apikey | Yes | yes | unknown |
| Razorpay IFSC | Indian Financial Systems Code (Bank Branch Codes) | none | Yes | unknown | unknown |
| Real Time Finance | Websocket API to access realtime stock data | apikey | No | unknown | unknown |
| SEC EDGAR Data | API to access annual reports of public US companies | none | Yes | yes | unknown |
| SmartAPI | Gain access to set of <SmartAPI> and create end-to-end broking services | apikey | Yes | unknown | unknown |
| StockData | Real-Time, Intraday & Historical Market Data, News and Sentiment API | apikey | Yes | yes | unknown |
| Tax Data API | Instant VAT number and tax validation across the globe | apikey | Yes | unknown | unknown |
| Tradier | US equity/option market data (delayed, intraday, historical) | oauth | Yes | yes | unknown |
| VAT Validation | Validate VAT numbers and calculate VAT rates | apikey | Yes | yes | unknown |
| WallstreetBets | WallstreetBets Stock Comments Sentiment Analysis | none | Yes | unknown | unknown |
| Yahoo Finance | Real time low latency Yahoo Finance API for stock market, crypto currencies, and currency exchange | apikey | Yes | yes | unknown |
| YNAB | Budgeting & Planning | oauth | Yes | yes | unknown |
| Zoho Books | Online accounting software, built for your business | oauth | Yes | unknown | unknown |
6 of these APIs require no authentication — you can start making requests immediately without signing up for an account. Just pick one from the table above, check its documentation, and send your first request.
25 APIs in this category require a free API key. This usually means creating a free account on the provider's website and copying your key from the dashboard. The process typically takes less than a minute.
Not sure where to start? Look for APIs marked as "alive" in the status column — these were recently verified as working. For browser-based projects, check that the API supports CORS.
Yes, all APIs listed on API Bouncer have a free tier. Some are completely open (no sign-up needed), while others require a free account to get an API key. Free tiers typically have rate limits — check each API's documentation for specifics.
It depends on your needs. Consider: Do you need authentication or prefer no-auth? Does your project need CORS support for browser access? How many requests will you make? Start with a no-auth API to prototype quickly, then switch to a more feature-rich option if needed.
We run periodic health checks on all listed APIs. The "Status" column shows whether each API was responding at our last check. APIs marked as "alive" were recently verified. You can also test any API yourself using curl or our guides on testing APIs.
Most free APIs allow commercial use, but terms vary by provider. Always check the specific API's terms of service. Some APIs have separate free and commercial tiers with different rate limits.
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