Category
Finance APIs
96 APIs, 33 of them with no auth listed. Each one links to its own page with auth, HTTPS, CORS and the official docs.
APIs96
No auth listed34%33 of 96
HTTPS99%
CORS enabled53%
Docs link reachable94%at the last weekly check
Quick starts
No key, HTTPS and CORS, and the docs link answered at the last check: call these from a web page in minutes.
Brainy PricesUAE living costs: KHDA fees, DLD rents, fuel, utilities, telecom and relocation, with dated sources
CardBinCheckCard BIN/IIN lookup: network, issuer, country and card type for the first 6-8 digits
contixSpain: IBAN validation with bank and BIC, EU VAT number check (VIES), Modelo 303 VAT sums
EcondbGlobal macroeconomic data
EstimateTaxUS federal, state and local income tax calculation for 2026, with the source of every figure
Finance Clearly Tax RatesCurrent UK and US tax rates, allowances and thresholds
All Finance APIs
AletheiaInsider trading data, earnings call analysis, financial statements, and moreapiKeyCORS
AlpacaRealtime and historical market data on all US equities and ETFsapiKeyCORS
Alpha VantageRealtime and historical stock dataapiKey
ArkleonPoint-in-time SEC EDGAR fundamentals over /v1apiKey- Banco do BrasilAll Banco do Brasil financial transaction APIsOAuthCORS
Bank DataInstant IBAN and SWIFT number validation across the globeapiKey- Banking Access IndexWhich US business banking providers accept founders by country of residence, with sourcesNo authCORS
BillplzPayment platformapiKey
BinlistPublic access to a database of IIN/BIN informationNo auth
Boleto.CloudA api to generate boletos in BrazilapiKey- Brainy PricesUAE living costs: KHDA fees, DLD rents, fuel, utilities, telecom and relocation, with dated sourcesNo authCORS
- BriefTapeReal-time AI-summarized SEC filings, Fed, FDA and BLS data, ticker-taggedapiKeyCORS
- CardBinCheckCard BIN/IIN lookup: network, issuer, country and card type for the first 6-8 digitsNo authCORS
CitiAll Citigroup account and statement data APIsapiKey
- CongressInvestsReal-time U.S. congressional stock trade disclosures from Senate EFD and House ClerkapiKeyCORS
- contixSpain: IBAN validation with bank and BIC, EU VAT number check (VIES), Modelo 303 VAT sumsNo authCORS
Degenscan Intel MacroU.S. Treasury auctions, stablecoin supply, Brazil crypto-dollar premium vs BCB PTAX; free trial keyapiKey
Dino.marketsMatched Kalshi and Polymarket prediction-market data, cross-venue spreadsapiKeyLink down
DrillrFundamentals, filings, earnings, ownership and events for US, China and Japan equitiesapiKey- EcondbGlobal macroeconomic dataNo authCORS
EconPulseLive economic data — CPI, PPI, energy, treasury rates, BTC premiumapiKeyCORS
EOD Historical DataReal-time and historical stock market data with 150+ exchangesapiKeyCORS- EstimateTaxUS federal, state and local income tax calculation for 2026, with the source of every figureNo authCORS
FarmDashDeFi intelligence, protocol risk, yield simulation plus 84 MCP agent tools, free Scout tierapiKeyCORS
Fed TreasuryU.S. Department of the Treasury DataNo auth- FilingrailSEC EDGAR filings, XBRL financials, Form 4 insider trades, 8-K events and 13F holdingsapiKey
FinageFinage is a stock, currency, cryptocurrency, indices, and ETFs real-time & historical data providerapiKey- Finance Clearly Tax RatesCurrent UK and US tax rates, allowances and thresholdsNo authCORS
- Financial Modeling PrepRealtime and historical stock dataapiKey
FinBridgeOfficial-source financials, segments, valuation, peers and prices for KR, US, JP, TW companiesapiKeyCORS
FinnhubReal-Time RESTful APIs and Websocket for Stocks, Currencies, and CryptoapiKey- FloorGuardSourced prop firm daily-loss and max-drawdown rules, plus a drawdown-room checkNo authCORS
FREDEconomic data from the Federal Reserve Bank of St. LouisapiKeyCORS
Front Accounting APIsFront accounting is multilingual and multicurrency software for small businessesOAuthCORS- Futures ClockTrading hours and session windows for 65 futures products on 16 global exchangesNo authCORS
FXNewsBiasAI-scored news sentiment for the 8 major forex currencies, refreshed every 3 hoursapiKeyCORS
Goldprice.devCross-validated gold, silver & copper spot, futures & 30-year history in 13 currenciesNo auth- Halal TerminalShariah-compliant stock and ETF screening across 5 methodologies, zakat and purificationapiKeyCORS
HeliousUS Treasury auction results with the tail and bidder split, plus scored economic releasesNo authCORS
HeliumNews with media bias scoring, balanced news synthesis, live market data, AI options pricingNo authCORS
HotstoksStock market data powered by SQLapiKeyCORS
IBAN AnalyzerResolve an IBAN to its bank name, BIC, city and address for 60+ countriesNo authCORS- IBANforgeIBAN validation and BIC/SWIFT lookup for 89 countries with 121k+ BIC entriesapiKey
- IEX CloudRealtime & Historical Stock and Market DataapiKeyCORSLink down
IGSpreadbetting and CFD Market DataapiKey- India GST HSN & SACIndian GST HSN and SAC classification code lookup and searchNo authCORS
- Indian Mutual FundGet complete history of India Mutual Funds DataNo auth
IntrinioA wide selection of financial data feedsapiKey
KlarnaKlarna payment and shopping serviceapiKey- KmalServico Gold Price DatasetCurrent gold price per gram at 6 purities for 188 countries, JSON, no authNo authLink down
- LiquiLensPublic-record bank and lender failure-risk evidenceNo authCORS
- Live SEC Form 4 Insider TradesLatest SEC Form 4 insider trading filings from EDGAR, by ticker or market-wideapiKey
MarketstackReal-Time, Intraday & Historical Market Data APIapiKey
matchwire.winMatched prediction-market games across Kalshi, Polymarket US/Intl and Predict.funapiKey- MercadoPagoMercado Pago API reference - all the information you need to develop your integrationsapiKey
- MonoConnect with users’ bank accounts and access transaction data in AfricaapiKey
MoovThe Moov API makes it simple for platforms to send, receive, and store moneyapiKey- Nigeria PAYENigerian income tax (PAYE) and take-home pay under the Nigeria Tax Act 2025No authCORS
- NordigenConnect to bank accounts using official bank APIs and get raw transaction dataapiKeyLink down
NORTH7 AgentTrading signals, market analysis and geopolitical intelligenceapiKeyCORS
OpenFIGIEquity, index, futures, options symbology from Bloomberg LPapiKeyCORS
Pink Agentic AI PaymentsApproval layer for AI agent payments: per-agent budgets, rules, single-use credentials, sandboxapiKeyCORS- PIT Financial StatePoint-in-time quarterly revenue for 20 U.S. issuersapiKeyLink down
PlaidConnect with user's bank accounts and access transaction dataapiKey
PolygonHistorical stock market dataapiKey
PolyKal FeesKalshi & Polymarket trading fee rates and formulas as verified JSONNo authCORS
Portfolio OptimizerPortfolio analysis and optimizationNo authCORS
Razorpay IFSCIndian Financial Systems Code (Bank Branch Codes)No auth
Real Time FinanceWebsocket API to access realtime stock dataapiKey
Sales Tax CalculatorComputes exact sales tax amounts and breakdowns for checkout and billingapiKeyCORS
SEC EDGAR DataAPI to access annual reports of public US companiesNo authCORS
SegmaraIPO calendars, filing stages and estimated lockup datesUser-AgentCORS
SeicheFree public funding, FX and capital-market evidence with source clocksNo authCORS- SmartAPIGain access to set of and create end-to-end broking servicesapiKey
Stanza VAT ValidatorValidate EU and UK VAT numbers with country formats, checksums, and VIES statusapiKey
StockDataReal-Time, Intraday & Historical Market Data, News and Sentiment APIapiKeyCORS- StockFitSEC filings, financial statements, earnings, ETF holdings and ownership dataapiKeyCORS
- StyvioRealtime and historical stock data and current stock sentimentapiKey
SugraOne API for market data, economics, commodities, climate, and global news. LLM-ready JSONapiKeyCORS
Tax DataInstant VAT number and tax validation across the globeapiKey
TickerInsideHoldings of every US ETF, which ETFs hold a stock, and overlap between funds, each datedNo authCORS
TickerLayerReal-time and historical market data for stocks, forex, crypto and moreapiKey
Top 5 StocksDaily AI-ranked stock and crypto watchlistsNo auth
TradierUS equity/option market data (delayed, intraday, historical)OAuthCORS
Twelve DataStock market data (real-time & historical)apiKey- UndertowPublic market-depth and sized exit estimates, not executable quotesNo authCORS
US Mortgage CalculatorMortgage payment, amortization, affordability and 50-state property tax dataNo authCORS
VAT ValidationValidate VAT numbers and calculate VAT ratesapiKeyCORS- VoxOddsPolymarket and Kalshi odds, all-in executable quotes, EV checks and audited forecast scoresNo auth
WallstreetBetsWallstreetBets Stock Comments Sentiment AnalysisNo auth
XFINLABMarket events, sentiment, technical analysis and macro data for stocksapiKey
XOOMARUS market data from SEC, FINRA, CFTC and the Fed: filings, insiders, earnings dates, short interestNo authCORS- Yahoo FinanceReal time low latency Yahoo Finance API for stock market, crypto currencies, and currency exchangeapiKeyCORSLink down
YNABBudgeting & PlanningOAuthCORS
ZelothornPlain-English explanations of US public companies with SEC filings and earnings dataNo authCORS
Zoho BooksOnline accounting software, built for your businessOAuth