WorldCoinIndex API

Cryptocurrency / API Key Intermediate HTTPS
Varies by plan (check documentation)

Overview

WorldCoinIndex provides cryptocurrency price data and market information for a large number of coins and tokens. It offers endpoints for retrieving current prices, market caps, and historical data. An API key is required to access the data.

💡

Beginner Tip

Register for a free API key at worldcoinindex.com to start fetching cryptocurrency prices. The API uses simple query parameters, making it straightforward to build a basic price tracker.

Available Data

coin price in USD/EUR
market capitalization
24h price change
trading volume
circulating supply
Use case: Integrate cryptocurrencies prices data into web and mobile applications

Example Response

JSON Response
{
  "id": "bitcoin",
  "symbol": "btc",
  "current_price": 65432.1,
  "market_cap": 1280000000000,
  "price_change_24h": 1250.5,
  "price_change_percentage_24h": 1.95,
  "total_volume": 28500000000
}

Field Reference

Markets List of market data objects for the requested coins
Markets[].Name Name of the cryptocurrency
Markets[].Label Coin label identifier used in API requests
Markets[].Price_usd Current price of the coin in USD
Markets[].Volume_24h_usd 24-hour trading volume in USD
Markets[].Timestamp Unix timestamp of when the price data was last updated

Implementation Example

const url = "https://www.worldcoinindex.com/apiservice";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
  headers: {
  "X-API-Key": "YOUR_API_KEY"
  }
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

401 Unauthorized or invalid key response API key is missing or incorrect
Register at worldcoinindex.com to obtain a free API key and include it as the key query parameter
Unknown coin label error Using an unsupported or misspelled coin label
Refer to the WorldCoinIndex coin list to find the correct label format (e.g., btcusd for Bitcoin to USD)
Empty Markets array in response The requested coin or fiat combination is not supported
Check the supported fiat currencies and coins in the API documentation and use a supported combination

Matrix Score Breakdown

🌐 Reachability 30/30
⚡ Speed 5/20
🔒 Security 15/15
🛠 Developer XP 12/20
✓ Reliability 10/15

Partially tested on Apr 5, 2026

Technical Specifications

Auth API Key
HTTPS REQUIRED
CORS UNKNOWN
Category Cryptocurrency
Difficulty Intermediate
Verified: 2026-04-04

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