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Step 1: Understand the Basics

The CoinCap API uses RESTful architecture and delivers data in JSON format. All requests are made using the GET method, ensuring compatibility with most development environments.

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Base URL:

All API endpoints are accessed via: 
https://api.coincap.io/v2/

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Step 2: Setup Your API Key (Optional)

While CoinCap API supports unauthenticated usage, requesting an API key unlocks higher rate limits and additional features.

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Without API Key:

200 requests per minute Access to 11 years of historical data

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With API Key:

500 requests per minute Enhanced access to historical data

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Request API Key

title To obtain your API key, request your API key here. Once received, use it as a Bearer Token in your headers: 
Authorization: Bearer YOUR_API_KEY

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Step 3: Send Your First Request

Now that you’re ready, try a basic API call to fetch the latest cryptocurrency data: 
GET https://api.coincap.io/v2/assets
This request will return a list of cryptocurrencies, including names, symbols, prices, and market data.

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Step 4: Explore the Endpoints

The CoinCap API provides a range of endpoints for data retrieval, including:
  • Assets: Comprehensive data on cryptocurrencies
  • Markets: Information about trading pairs across exchanges
  • Exchanges: Details of supported exchanges
  • Rates: Exchange rates for popular fiat and crypto currencies
Check out the API Reference section for detailed endpoint documentation.

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Need Help?

We’re here to support your journey! Submit feedback, report issues, or share suggestions via our support portal. Start building today and unlock the power of real-time cryptocurrency data with CoinCap API 2.0!