CoinCap

API

Free RESTful API for real-time cryptocurrency prices and market data

Overview

CoinCap API provides real-time and historical cryptocurrency market data via RESTful endpoints. Key endpoints include /assets (list of cryptos with prices, market cap, volume), /assets/{id} (detailed asset stats), /markets (exchange trading pairs), and /rates (fiat-crypto conversions). Responses are JSON-formatted. Ideal for building price trackers, integrating market data into financial apps, creating portfolio dashboards, or analyzing trends. It supports CORS and requires no API key for basic usage, simplifying developer integration.

Example Integration (JavaScript)

script.js JS


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

Key Features

RESTful
JSON support
No authentication required
Real-time market data
Historical data access
CORS enabled

Frequently Asked Questions

? Is CoinCap free to use?

Yes, CoinCap API is free for basic usage with no API key required. Higher volume or advanced features may need a paid subscription.

? Does it require an API Key?

No, basic access to CoinCap API endpoints does not require an API key. Some advanced or high-volume use cases might need authentication.

? What is the response format?

All CoinCap API responses are in JSON format, which is widely supported and easy to parse across applications.

Top Alternatives

CoinGecko API Search Google

CryptoCompare API Search Google

Binance Public API Search Google

Tool Info

Pricing Free

Category Cryptocurrency

Platform Public API

Pros

⊕ Easy to integrate (no API key needed)
⊕ Comprehensive real-time and historical data
⊕ Well-documented endpoints
⊕ Free for basic usage

Cons

⊖ Rate-limited for high-volume requests
⊖ Advanced features may require a paid plan
⊖ No official service level agreement (SLA)