Finnhub

API

Real-time RESTful & Websocket APIs for Stocks, Currencies, and Crypto

Overview

Finnhub provides RESTful endpoints for stock quotes, candlestick charts, company news, crypto prices, and currency exchange rates, plus Websocket streams for real-time market updates. Responses are in JSON format. Key use cases include building financial analytics platforms, algorithmic trading bots, portfolio trackers, or integrating market data into investment tools. It covers global assets across stocks, forex, and digital currencies with historical and real-time data.

Example Integration (JavaScript)

script.js JS


fetch('https://finnhub.io/docs/api')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful API
Websocket Support
Real-time Market Data
JSON Responses
Global Asset Coverage
Historical Data Access

Frequently Asked Questions

? Is Finnhub free to use?

Yes, Finnhub offers a free tier with limited rate limits; paid plans are available for higher usage and advanced features.

? Does it require an API Key?

Yes, all Finnhub API requests require an API key, which can be obtained for free by signing up on their website.

? What is the response format?

Finnhub API responses are primarily in JSON format for both REST endpoints and Websocket streams.

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Tool Info

Pricing Freemium

Category Finance

Platform Public API

Pros

⊕ Easy to integrate
⊕ Comprehensive data coverage
⊕ Real-time Websocket streams
⊕ Well-documented
⊕ Supports multiple asset classes

Cons

⊖ Rate-limited free tier
⊖ Requires API key for all access
⊖ Advanced features locked behind paid plans
⊖ No SLA for free users