Overview
BitMEX is a derivatives exchange specializing in perpetual swaps and futures contracts for Bitcoin and other cryptocurrencies. Its REST API exposes real-time market data including instrument details, order book depth, and recent trade history with no authentication required for public endpoints. The authenticated trading API supports order management and position tracking for leveraged products.
Beginner Tip
Use the testnet at https://testnet.bitmex.com/api/v1/ to safely experiment with order placement before touching real funds — testnet accounts can be funded with fake Bitcoin. For read-only market data you do not need an API key at all.
Available Data
Example 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
symbol Unique identifier for the instrument, e.g., XBTUSD. lastPrice Price of the last matched trade. bidPrice Best bid price currently in the order book. askPrice Best ask price currently in the order book. volume24h Number of contracts traded in the last 24 hours. fundingRate Current funding rate for perpetual swap instruments. Implementation Example
const url = "https://www.bitmex.com/app/apiOverview";
// 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
Matrix Score Breakdown
Partially tested on Apr 5, 2026
Technical Specifications
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