Best Free Financial Data APIs of 2026 - Page 2

The Financial Data API provides a wide range of financial information, including end-of-day and intraday stock market data, company financial statements, insider and institutional trading data, and sustainability metrics. Offering over 20 years of historical data, the API supports more than 17,000 stocks, 20,000 funds, 2,000 ETFs, 13,000 OTC securities, and 200,000 derivatives. It’s an essential resource for financial analysts, portfolio managers, and investors looking for comprehensive and up-to-date market information.

FlashAlpha serves as a comprehensive options analytics API tailored for quantitative developers and systematic traders. Through a single API request, users receive real-time data on gamma exposure (GEX), volatility surfaces, dealer exposure, implied volatility rank, and all 15 Greeks for over 6,000 US equities and ETFs, with updates occurring every 15 seconds. Unlike traditional raw data providers, FlashAlpha streamlines the analytics process by pre-computing the entire layer, which significantly reduces the burden of data engineering. It stands out as the sole options analytics platform equipped with a native MCP server, enabling AI agents like Claude and Cursor to directly query live options data. A free tier is offered without requiring a credit card, and users can expect their first API call to be completed in under a minute. This efficient service enhances the decision-making capabilities of traders by providing essential options insights with remarkable speed and ease.

Hub-Equity transforms the XBRL and iXBRL submissions from publicly traded companies to the SEC in the United States and under ESEF regulations in Europe into uniform income statements, balance sheets, and cash flow statements for over 12,500 issuers. Both US-GAAP and IFRS filers utilize a unified schema, enabling direct line-by-line comparisons between American and European firms. Each data point is linked back to its original filing and the corresponding fiscal period, while restatements are displayed alongside the original and modified values, highlighting the filing that prompted the change. Users can access the platform in three distinct ways: through a web interface featuring company pages, a screener, cross-issuer comparisons, and the option for Excel or JSON exports; via a REST API and Python SDK, which can be installed with `pip install hub-equity` and is thoroughly documented at docs.hub-equity.com; or through an MCP server that supports AI agents like Claude, Cursor, and Continue, allowing for the extraction of any figure along with its source filing, historical time series, and restatements. All subscription plans receive identical data and verification checks, with pricing based on throughput and available tools rather than data quality, making it accessible for all users. The Free plan is particularly appealing as it requires no credit card and never expires, encouraging long-term exploration of its capabilities.

Many companies recognize the benefits of digitally optimizing their payments processes, but they often hesitate to fully embrace the necessary changes due to concerns over trust and flexibility with existing systems. Dwolla offers a modern API that simplifies how businesses pay and get paid via bank transfers. With a secure and API-first approach, Dwolla’s technology unlocks a broad range of account-to-account payment types and flows. Whether businesses are looking to enable same day or real time payment experiences, Dwolla’s configurable solution can be configured to to fit your business’ needs.

Lukka is a digital asset data and software company that provides enterprise-grade tools for crypto reporting, analytics, compliance, and financial operations. It is designed for institutions that need accurate, standardized, and auditable data across complex blockchain and crypto asset environments. The platform serves funds, fund service providers, traditional financial institutions, banks, crypto businesses, accounting firms, government agencies, and regulators. Lukka helps organizations streamline middle- and back-office operations by organizing crypto asset data for reporting, valuation, tax, NAV, and compliance workflows. Its product suite includes Enterprise Data Management SaaS, Reference Data, Pricing and Market Data, Benchmarks, Quantitative Risk and Analytics Data, and Blockchain Analytics and Compliance. These solutions help companies standardize more than one million crypto assets, access institutional pricing data, and investigate blockchain activity. Lukka’s infrastructure is built to support audit-ready processes and high data reliability for financial institutions. The company also emphasizes risk frameworks and trust standards through its Trust Center. By combining data quality, software, and blockchain intelligence, Lukka helps businesses manage digital assets with more confidence and operational control.

Equibles is an advanced platform that harnesses AI technology to provide comprehensive US stock-market data tailored for both investors and developers. It offers a wide array of resources including full-text search for SEC filings, transcripts from earnings calls, details on 13F institutional holdings, insider trading information, congressional trades, short interest metrics, and squeeze scores, along with macroeconomic data from FRED, CFTC, and CBOE, as well as valuation multiples and an efficient stock screener. All of this information is made accessible through an AI research assistant named ALVIS, a hosted Model Context Protocol (MCP) server, and a public REST API that is meticulously documented using OpenAPI standards. Users can benefit from a free tier that allows up to 100 API calls per day without requiring a credit card, making it an attractive option for those looking to explore stock data. Additionally, the platform's ease of use and powerful tools empower users to make informed investment decisions.

Worthune serves as a comprehensive catalog of financial planning models that are accessible via a REST API, managed through an MCP server, and available in the form of embeddable calculators. Each model adheres to a versioned public specification and undergoes rigorous Concordance testing; this necessitates that an independent second implementation, crafted in a language distinct from the original specification, must align with the production engine across 250 specific cases per model, achieving an accuracy of one part in a billion prior to any release. Continuous integration processes ensure that every modification triggers the harness, where any discrepancies halt the release process. Furthermore, each response includes the specification version, the government constants utilized, their primary sources, and check dates, along with a SHA-256 decision record that can be stored and recomputed later to validate the origin of the figures presented. Designed with developers in mind, Worthune enhances financial mathematics for applications in fintech, wealthtech, and banking sectors; it is particularly valuable for teams needing to demonstrate compliance to reviewers concerning the origins of financial data, as well as for AI agents that require reliable and deterministic financial computations instead of mere predictive outputs. This unique approach not only fosters trust but also ensures precision and accountability in financial modeling.

FinancialReports is an advanced financial database platform that helps professionals access and analyze over 2.7 million filings from top European companies. It offers a robust suite of tools, including real-time filing tracking, AI-driven analysis, and the ability to monitor insider trades and IPOs. Users can create personalized watchlists, calculate ROI, and gain a competitive edge in the financial markets. The platform is particularly useful for investors and financial analysts seeking detailed insights into market indices, stock exchanges, and corporate disclosures.