Best Free Finance & Stock Market APIs

Real-time and historical market data for US stocks, forex, crypto and commodities via REST and WebSocket. 25+ years of OHLCV history, watchlists and portfolio analytics.

Real-time and historical stock market quotes, forex, and crypto time series

Institutional-grade real-time market data, company fundamentals, and earnings

Global financial market data for equities, forex, indices, and crypto

Global stock quotes, market data, currency rates, and financial news

Real-time and historical financial market data API for US stocks, options, forex, and crypto.

Clean stock, crypto, and forex market data feeds and financial news

Global stock market ticker quotes, historical data, and index tracking

Open-source currency exchange rate API tracking the European Central Bank

Foreign currency exchange rates and reliable conversion endpoints

Reliable foreign exchange rates and currency conversion data

Real-time fiat currency converter supporting 150+ world currencies

Live foreign exchange rates, historic quotes, and currency conversion

Foreign exchange rates and historical currency conversion API

Company financial modeling, SEC filings, and financial ratios

Official European Commission VAT verification service. No registration required, completely free.

Zero-dependency international bank account (IBAN) and SWIFT/BIC validation service using ISO 7064 MOD 97-10.

Real-time currency and cross-rate conversion service based on official European Central Bank reference rates.

Provides a machine-readable dataset of published 409A valuation prices collected from provider sites. Data is available as JSON, CSV and markdown and includes source links, quoted amounts and retrieval dates.

Public dataset that aggregates published conveyancing fee figures across Australian sources and computes medians, ranges and state breakdowns. Data is available as machine-readable JSON, CSV and Markdown.

This API provides up-to-date information on various data points from Argentina, including historical exchange rates, financial indices, and public holidays. It enables users to access data in a RESTful manner, making it a valuable resource for developers and analysts interested in Argentine data.

Public dataset of UK conveyancing fees compiled from law firms' published pages. Provides the median fee and per-source figures with source URLs and read dates, available as JSON and CSV.

ExchangeRate-API provides a free and open-access API for real-time currency conversion and exchange rate data without the need for an API key. It supports various currency pairs and allows users to obtain current and historical exchange rates for personal or commercial use, subject to terms of attribution and rate limits.

FXMacroData delivers real-time and historical macroeconomic releases, FX reference rates, forecasts and market context through a REST API with streaming options. It includes point-in-time histories, COT positioning, commodities and precomputed factors for research and trading workflows.