Polygon.io API
Financial Data & Markets
Institutional-grade financial market data API for US stocks, options, forex, and crypto with free tier
Polygon.io API Highlights
Polygon.io API is best for fintech startups, algorithmic traders, and developers building stock market dashboards and charting tools
Nigeria
Ghana
Kenyaio is a modern financial market data platform that provides real-time and historical data for US Stocks, Options, Indices, Forex, and Crypto. com), Polygon provides raw, institutional-grade market feeds direct from exchanges through developer-friendly REST APIs and low-latency WebSockets.
io, Nigerian fintech developers can build stock tracking apps, algorithmic trading strategies, and investment portfolio monitors. The free tier includes historical aggregates, technical indicators (SMA, EMA, RSI, MACD), corporate tickers, dividends, and news feeds.
Polygon.io API Core Features & Capabilities
| Feature | Status | Description & Capabilities |
|---|---|---|
| Real-time Price & Market Data | ✓ Supported | Live ticker prices, order book depths, and volume feeds for digital assets and forex pairs. |
| Historical OHLCV Data | ✓ Supported | Comprehensive historical open, high, low, close, and volume candlestick series for market analysis. |
| Token / Wallet Balance Queries | ✗ Not Supported | Inspect on-chain wallet token holdings, transaction histories, and smart contract balances. (Not supported by Polygon.io API). |
| Trading & Order Execution | ✗ Not Supported | Submit market, limit, and algorithmic buy/sell orders directly to crypto exchange order books. (Not supported by Polygon.io API). |
| DeFi / Smart Contract Integration | ✗ Not Supported | Interact directly with decentralized finance protocols, liquidity pools, and smart contracts. (Not supported by Polygon.io API). |
| NFT Data & Management | ✗ Not Supported | Query NFT metadata, token ownership, collection stats, and trigger minting workflows. (Not supported by Polygon.io API). |
| Staking & Yield Products | ✗ Not Supported | Stake digital assets and query real-time annualized percentage yields (APY). (Not supported by Polygon.io API). |
| NGN / Fiat On-Off Ramp | ✗ Not Supported | Seamlessly convert between Nigerian Naira and cryptocurrencies via bank transfer or card. (Not supported by Polygon.io API). |
- Free Basic Tier:5 API requests per minute, 2 years of historical end-of-day data across US Stocks, Forex, and Crypto
- Starter plans from $29/month for unlimited 15-minute delayed REST and WebSockets
Required Access Documents for Polygon.io API
- Polygon.io AccountRequiredRegister at polygon.io to generate your personal API key
Different Polygon.io API use cases
- US Stock Trading & Wealth Apps:Display real-time and historical stock charts and quotes in African retail investing apps.
- Automated Algorithmic Trading Bots:Backtest trading algorithms against years of historical tick-by-tick and minute-bar data.
- Financial News & Market Sentiment Widgets:Embed ticker-specific corporate news and earnings announcements into web terminals.