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.
Last verified: November 12, 2026
| Name | Description | Auth | HTTPS | CORS | Uptime (30 days) |
|---|---|---|---|---|---|
| Aletheia | Insider trading data, earnings call analysis, financial statements, and more | apikey | Yes | yes | 100% (5 checks) |
| Alpaca | Realtime and historical market data on all US equities and ETFs | apikey | Yes | yes | 80.0% (5 checks) |
| AlphaAI | AI-enriched financial & insider-trading news, scored for relevance | apikey | Yes | unknown | 100% (5 checks) |
| apilayer marketstack | Real-Time, Intraday & Historical Market Data API | apikey | Yes | unknown | 100% (5 checks) |
| Banco do Brasil | All Banco do Brasil financial transaction APIs | oauth | Yes | yes | 100% (5 checks) |
| Bank Data API | Instant IBAN and SWIFT number validation across the globe | apikey | Yes | unknown | 100% (5 checks) |
| Banking Access Index | Which US business banking providers accept founders by country of residence, with sources | none | Yes | yes | 100% (5 checks) |
| Bargo Congress Trades | U.S. House and Senate STOCK Act trade disclosures as JSON: ticker, member, chamber, transaction type, amount range and filing dates. Free key raises rate limits. | none | Yes | yes | 100% (5 checks) |
| Billplz | Payment platform | apikey | Yes | unknown | 100% (5 checks) |
| Boleto.Cloud | A api to generate boletos in Brazil | apikey | Yes | unknown | 100% (5 checks) |
| Brainy Prices | UAE living costs: KHDA fees, DLD rents, fuel, utilities, telecom and relocation, with dated sources | none | Yes | yes | 100% (5 checks) |
| Bureau of Economic Analysis | US GDP, personal income, trade and industry accounts from the Bureau of Economic Analysis. Free key on sign-up. | apikey | Yes | unknown | 100% (3 checks) |
| CardBinCheck | Card BIN/IIN lookup: network, issuer, country and card type for the first 6-8 digits | none | Yes | yes | 100% (5 checks) |
| Citi | All Citigroup account and statement data APIs | apikey | Yes | unknown | 100% (5 checks) |
| Clear Street | Trade US stocks and options, with market data, fundamentals and account data | apikey | Yes | no | 100% (5 checks) |
| contix | Spain: IBAN validation with bank and BIC, EU VAT number check (VIES), Modelo 303 VAT sums | none | Yes | yes | 100% (5 checks) |
| DolarAPI | Real-time exchange rates for Latin American currencies | none | Yes | yes | 100% (5 checks) |
| Drillr | Fundamentals, filings, earnings, ownership and events for US, China and Japan equities | apikey | Yes | no | 100% (5 checks) |
| Duceus | European insider (PDMR) transactions and major shareholding notifications from national registers, normalized into one JSON schema with links to each filing | apikey | Yes | no | 100% (4 checks) |
| Earnings Feed | SEC filings, insider transactions, institutional holdings | apikey | Yes | no | 100% (5 checks) |
| Econdb | Global macroeconomic data | none | Yes | yes | 100% (5 checks) |
| Edgrapi | Clean SEC EDGAR company financials, ratios, filings and 10-K/10-Q sections as normalized JSON | apikey | Yes | unknown | 100% (5 checks) |
| EstimateTax | US federal, state and local income tax calculation for 2026, with the source of every figure | none | Yes | yes | 100% (5 checks) |
| FarmDash | DeFi intelligence, protocol risk, yield simulation plus 84 MCP agent tools, free Scout tier | apikey | Yes | yes | 100% (5 checks) |
| Fed Treasury | U.S. Department of the Treasury Data | none | Yes | unknown | 100% (5 checks) |
| Filingrail | SEC EDGAR filings, XBRL financials, Form 4 insider trades, 8-K events and 13F holdings | apikey | Yes | unknown | 100% (5 checks) |
| Finance Clearly Tax Rates | Current UK and US tax rates, allowances and thresholds | none | Yes | yes | 100% (5 checks) |
| Financial Data | Stock market and financial data | apikey | Yes | unknown | 100% (5 checks) |
| Financial Modeling Prep | Realtime and historical stock data | apikey | Yes | unknown | 100% (5 checks) |
| FinBridge | Official-source financials, segments, valuation, peers and prices for KR, US, JP, TW companies | apikey | Yes | yes | 100% (5 checks) |
| FinFeedAPI | Developer-first market data API | apikey | Yes | unknown | 100% (5 checks) |
| Finnhub | Real-Time RESTful APIs and Websocket for Stocks, Currencies, and Crypto | apikey | Yes | unknown | 100% (5 checks) |
| FinSignals | Sentiment, direction & quality classification for Reddit financial social posts | apikey | Yes | yes | 100% (5 checks) |
| FloorGuard | Sourced prop firm daily-loss and max-drawdown rules, plus a drawdown-room check | none | Yes | yes | 100% (5 checks) |
| FRED | Economic data from the Federal Reserve Bank of St. Louis | apikey | Yes | yes | 100% (5 checks) |
| Front Accounting APIs | Front accounting is multilingual and multicurrency software for small businesses | oauth | Yes | yes | 100% (5 checks) |
| FundBiz | UK specialty business finance lender terms, typical rates and decision times | none | Yes | yes | 100% (5 checks) |
| Futures Clock | Trading hours and session windows for 65 futures products on 16 global exchanges | none | Yes | yes | 100% (5 checks) |
| FXMacroData | Real-time forex macroeconomic API for all major currency pairs sourced from central bank announcements | apikey | Yes | yes | 100% (5 checks) |
| FXNewsBias | AI-scored news sentiment for the 8 major forex currencies, refreshed every 3 hours | apikey | Yes | yes | 100% (5 checks) |
| GoCardless Bank Account Data (formerly Nordigen) | Connect to bank accounts using official bank APIs and get raw transaction data | apikey | Yes | unknown | 80.0% (5 checks) |
| Goldprice.dev | Cross-validated gold, silver & copper spot, futures & 30-year history in 13 currencies | none | Yes | unknown | 100% (5 checks) |
| Grizzly Bulls | U.S. GDP, CPI, unemployment, and payroll history | none | Yes | yes | 100% (4 checks) |
| Halal Terminal | Shariah-compliant stock and ETF screening across 5 methodologies, zakat and purification | apikey | Yes | yes | 100% (5 checks) |
| Helious | US Treasury auction results with the tail and bidder split, plus scored economic releases | none | Yes | yes | 100% (5 checks) |
| Hotstoks | Stock market data powered by SQL | apikey | Yes | yes | 100% (5 checks) |
| IBAN Analyzer | Resolve an IBAN to its bank name, BIC, city and address for 60+ countries | none | Yes | yes | 100% (5 checks) |
| IBANforge | IBAN validation and BIC/SWIFT lookup for 75+ countries with 121K+ bank entries | none | Yes | yes | 100% (5 checks) |
| IG | Spreadbetting and CFD Market Data | apikey | Yes | unknown | 100% (5 checks) |
| IIN API | IIN API allows you to accurately identify the issuing bank, card type, country of origin, and other details from a credit or debit card number. This is essential for fraud prevention, payment processing, and customer verification. | apikey | Yes | yes | 100% (5 checks) |
| IMF Data | International Monetary Fund macroeconomic data (GDP, inflation, balance of payments, exchange rates) for every member country, via SDMX. | none | Yes | unknown | 100% (3 checks) |
| India GST HSN & SAC | Indian GST HSN and SAC classification code lookup and search | none | Yes | yes | 100% (5 checks) |
| Indian Mutual Fund | Get complete history of India Mutual Funds Data | none | Yes | unknown | 100% (5 checks) |
| Invoice & Payment ID Validator | Validate IBAN, BIC, EU VAT (live VIES), UK VAT and EIN, with a pay/review/hold payee check | apikey | Yes | unknown | 100% (5 checks) |
| KeepRule | Investment principles and quotes from Buffett, Munger, and other masters | none | Yes | yes | 60.0% (5 checks) |
| Kite Connect | Stock market investment and trading platform | apikey | Yes | no | 100% (5 checks) |
| Klarna | Klarna payment and shopping service | apikey | Yes | unknown | 80.0% (5 checks) |
| LiquiLens | Public-record bank and lender failure-risk evidence | none | Yes | yes | 100% (5 checks) |
| Live SEC Form 4 Insider Trades | Latest SEC Form 4 insider trading filings from EDGAR, by ticker or market-wide | apikey | Yes | unknown | 100% (5 checks) |
| Marketstack | Real-Time, Intraday & Historical Market Data API | apikey | Yes | unknown | 100% (5 checks) |
| matchwire.win | Matched prediction-market games across Kalshi, Polymarket US/Intl and Predict.fun | apikey | Yes | no | 100% (5 checks) |
| MercadoPago | Mercado Pago API reference - all the information you need to develop your integrations | apikey | Yes | unknown | 100% (5 checks) |
| Metal Sentinel | Live and historical precious and base metal prices in 180+ currencies | apikey | Yes | unknown | 100% (5 checks) |
| MetalCharts | Live and historical gold, silver, platinum and base metal prices, COMEX inventory, CFTC positioning and Shanghai premiums | apikey | Yes | no | 100% (4 checks) |
| Metals-API | Real-time and historical gold, silver, platinum, LBMA and LME base metals prices | apikey | Yes | yes | 100% (5 checks) |
| Moov | The Moov API makes it simple for platforms to send, receive, and store money | apikey | Yes | unknown | 100% (5 checks) |
| MortgageCalculator | 16 mortgage calculators: payment, refinance, APR, rent vs. buy, points and amortization schedules | none | Yes | yes | 100% (4 checks) |
| Nigeria PAYE | Nigerian income tax (PAYE) and take-home pay under the Nigeria Tax Act 2025 | none | Yes | yes | 100% (5 checks) |
| Nordigen | Connect to bank accounts using official bank APIs and get raw transaction data | apikey | Yes | unknown | 0% (4 checks) |
| NORTH7 Agent | Trading signals, market analysis and geopolitical intelligence | apikey | Yes | yes | 100% (5 checks) |
| OilPriceAPI | Crude oil, natural gas, refined product and marine fuel prices, each with its source timestamp | apikey | Yes | yes | 100% (5 checks) |
| OpenFIGI | Equity, index, futures, options symbology from Bloomberg LP | apikey | Yes | yes | 100% (5 checks) |
| ParityVend | Globalize your business by auto-adapting pricing for each visitor with Purchasing Power Parity | apikey | Yes | yes | 100% (5 checks) |
| Pink Agentic AI Payments | Approval layer for AI agent payments: per-agent budgets, rules, single-use credentials, sandbox | apikey | Yes | yes | 100% (5 checks) |
| Plaid | Connect with user's bank accounts and access transaction data | apikey | Yes | unknown | 100% (5 checks) |
| PolyKal Fees | Kalshi & Polymarket trading fee rates and formulas as verified JSON | none | Yes | yes | 100% (5 checks) |
| Polymarket | Prediction market data including markets, prices, and order book | apikey | Yes | yes | 100% (5 checks) |
| QuiVad | Net short positions disclosed to 23 market regulators, fund by fund, since 2010 | none | Yes | yes | 100% (5 checks) |
| Quotelinks | Free SEC EDGAR financial statements, filings and company profiles by ticker or CIK, plus ECB exchange rates since 1999 | none | Yes | yes | 100% (1 check) |
| Razorpay IFSC | Indian Financial Systems Code (Bank Branch Codes) | none | Yes | unknown | 100% (5 checks) |
| Real Time Finance | Websocket API to access realtime stock data | apikey | No | unknown | 100% (5 checks) |
| Realie Property Data API | Realie's property data is directly sourced from local municipalities and contains over 100 data fields. Realie covers the entire USA with 180 million parcels. | apikey | Yes | no | 100% (5 checks) |
| ReceiptEdit Sales Tax API | Free sales-tax lookup API covering all US states + zip-level city/county rates. No signup, no rate limit. Also supports Canadian GST/HST/PST and Indian GST slabs. Ideal for building expense-reimbursement flows, invoicing SaaS demos, receipt OCR pipelines, or seeding accounting tools. Full docs at https://receiptedit.com/developers | none | Yes | yes | 100% (5 checks) |
| RentCast | Retrieve real-time property and rental data for real estate in the United States | apikey | Yes | yes | 100% (5 checks) |
| Salary API | The REST API returns structured JSON responses containing salary ranges, hourly rates, compensation benchmarks, required skills, market demand, and regional employment insights | apikey | Yes | yes | 100% (5 checks) |
| Sales Tax Calculator | Computes exact sales tax amounts and breakdowns for checkout and billing | apikey | Yes | yes | 100% (5 checks) |
| Sanctions Screening | Fuzzy name screening against OFAC, UN, EU and UK sanctions lists plus PEPs, with list versions | apikey | Yes | no | 100% (4 checks) |
| SEC EDGAR Data | API to access annual reports of public US companies | none | Yes | yes | 100% (5 checks) |
| Segmara | IPO calendars, filing stages and estimated lockup dates | user-agent | Yes | yes | 100% (5 checks) |
| Seiche | Free public funding, FX and capital-market evidence with source clocks | none | Yes | yes | 100% (5 checks) |
| SiftingIO | Real-time and historical market data for US stocks, ETFs, forex, commodities and crypto over REST and WebSocket. Free plan is for non-commercial use. | apikey | Yes | unknown | 100% (5 checks) |
| SmartAPI | Gain access to set of <SmartAPI> and create end-to-end broking services | apikey | Yes | unknown | 100% (5 checks) |
| Stanza VAT Validator | Validate EU and UK VAT numbers with country formats, checksums, and VIES status | apikey | Yes | no | 100% (5 checks) |
| StockData | Real-Time, Intraday & Historical Market Data, News and Sentiment API | apikey | Yes | yes | 100% (5 checks) |
| StockFit | SEC filings, financial statements, earnings, ETF holdings and ownership data | apikey | Yes | yes | 100% (5 checks) |
| Stripe | Payment processing, subscriptions, and financial management | apikey | Yes | unknown | 100% (5 checks) |
| Sugra | One API for market data, economics, commodities, climate, and global news. LLM-ready JSON | apikey | Yes | yes | 100% (5 checks) |
| Svensk Skatte-API | Swedish tax calculations: ISK, VAT, income tax, employer contributions | apikey | Yes | unknown | 0% (5 checks) |
| Tax Data API | Instant VAT number and tax validation across the globe | apikey | Yes | unknown | 100% (5 checks) |
| TickerInside | Holdings of every US ETF, which ETFs hold a stock, and overlap between funds, each dated | none | Yes | yes | 100% (5 checks) |
| TILLA | Crypto, US stocks, FX, macro and spot ETF flows on one UTC clock, with 280,675 derived indicators | apikey | Yes | yes | 0% (1 check) |
| Top 5 Stocks | Daily AI-ranked stock and crypto watchlists | none | Yes | unknown | 100% (5 checks) |
| Tradier | US equity/option market data (delayed, intraday, historical) | oauth | Yes | yes | 100% (5 checks) |
| Tradoshi | Rankings of trading schools and prop firms, every criterion with its source | none | Yes | yes | 100% (4 checks) |
| Undertow | Public market-depth and sized exit estimates, not executable quotes | none | Yes | yes | 100% (5 checks) |
| US Freelancer Tax | 2026 US self-employment tax, quarterly estimates, QBI, mileage and home office deductions | none | Yes | yes | 100% (4 checks) |
| US Mortgage Calculator | Mortgage payment, amortization, affordability and 50-state property tax data | none | Yes | yes | 100% (5 checks) |
| USTariffRates | US HTS lookup and origin-specific tariff breakdowns with source context | apikey | Yes | unknown | 100% (5 checks) |
| Validate IBAN API | This API lets you quickly validate IBAN bank codes | apikey | Yes | yes | 100% (5 checks) |
| Validate Swift/BIC | Validates BIC/SWIFT code | apikey | Yes | yes | 100% (5 checks) |
| ValueRay | Technical, quantitative and sentiment data for stocks and ETFs, optimized for AI/LLM | none | Yes | yes | 100% (5 checks) |
| VAT Validation | Validate VAT numbers and calculate VAT rates | apikey | Yes | yes | 100% (5 checks) |
| WallstreetBets | WallstreetBets Stock Comments Sentiment Analysis | none | Yes | unknown | 100% (5 checks) |
| Wealthnow | Real-time and historical stock and crypto prices, fundamentals, SEC filings, insider and 13F data | apikey | Yes | no | 100% (4 checks) |
| xChangeApi | Exchange rates & real time market data | apikey | Yes | yes | 100% (5 checks) |
| XFINLAB | Market events, sentiment, technical analysis and macro data for stocks | apikey | Yes | unknown | 100% (5 checks) |
| XOOMAR | US market data from SEC, FINRA, CFTC and the Fed: filings, insiders, earnings dates, short interest | none | Yes | yes | 100% (5 checks) |
| YNAB | Budgeting & Planning | oauth | Yes | yes | 100% (5 checks) |
| Zelothorn | Plain-English explanations of US public companies with SEC filings and earnings data | none | Yes | yes | 100% (5 checks) |
| Zoho Books | Online accounting software, built for your business | oauth | Yes | unknown | 100% (5 checks) |
42 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.
72 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? Check the uptime column: it shows how often each API's documentation responded to our daily checks over the last 30 days, and the dot shows whether it responded at the latest check. 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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