Top 76 Finance APIs For Developers
Finance
SEC EDGAR Data
API to access annual reports of public US companies.
SiftingIO
Market data for stocks, forex, crypto, commodities and DEX.
- Ad
Learn moreSerpApi - Search API
SerpApi's Search API makes it easy and fast to scrape Google and other search engines.
SmartAPI
Gain access to set of <SmartAPI> and create end-to-end broking services.
StockData
Real-Time, Intraday & Historical Market Data, News and Sentiment API.
Stripe
Payment processing, subscriptions, and financial management.
Sugra API
One API across markets, economics, commodities, climate, government, and global news. 1,400+ endpoints, 146 primary sources, LLM-ready JSON.
Svensk Skatte-API
Swedish tax calculations: ISK, VAT, income tax, employer contributions.
TradeWatch
Real time financial market data.
Tradier
US equity/option market data (delayed, intraday, historical).
Twelve Data
Stock market data (real-time & historical).
Validate IBAN API
This API lets you quickly validate IBAN bank codes.
Validate Swift/BIC
Validates BIC/SWIFT code.
ValueRay
Technical, quantitative and sentiment data for stocks and ETFs, optimized for AI/LLM.
WallstreetBets
WallstreetBets Stock Comments Sentiment Analysis.
WealthTools | Personal Finance API
Free REST API for personal finance calculations — mortgage payments, investment growth projections, debt payoff timelines, and net worth tracking.
xChangeApi
Exchange rates & real time market data.
YNAB
Budgeting & Planning.
Zoho Books
Online accounting software, built for your business.
Guides
All guides- The State of Public APIs 2026: Data From 1,580 APIsWe measured all 1,580 public APIs in our directory. How many need a key, OAuth or nothing, which work from a browser, what is growing, and how many are down.
- REST API Naming Conventions: What 72 APIs DoWe read the OpenAPI specs of 72 public APIs and counted 3,852 endpoint paths. The naming conventions real APIs follow, where they disagree, and what to copy.
- API Rate Limiting: Handle 429s, Then Set Your OwnHow API rate limiting works from both sides: reading limit headers, backing off correctly from a 429 against real public APIs, and setting limits on your own.