Crypto.com Exchange V1 API Documentation

Introduction

Welcome to the official API documentation for the Crypto.com Exchange. This guide provides a comprehensive breakdown of the API endpoints, WebSocket streams, and their usage for developers.

General Information

Endpoint URLs

• REST API Root URL: https://api.crypto.com
• WebSocket Root URL: wss://ws.crypto.com/kline-api/ws

All requests must be made via HTTPS protocol. For POST and DELETE requests, the Content-Type header must be application/x-www-form-urlencoded.

Generating API Keys

1. Navigate to 【User Center】 → 【API】 in the web interface

2. Generate a new API key pair consisting of:

   • API Key
   • Secret Key
3. Optional: Specify IP whitelist restrictions

👉 Get started with API integration

Authentication

Request Signing

Authenticated endpoints require SHA-256 signing with these parameters:

1. Sort parameters alphabetically
2. Concatenate namevalue pairs for non-empty parameters
3. Hash the resulting string with your Secret Key

Example Signature Generation:

sign = sha256("api_key" + "your_api_key" + "time" + "timestamp" + "your_secret_key")

Rate Limits

Market Data APIs

1. List Available Market Symbols

Endpoint: /v1/symbols
Method: GET
Response:

{
  "data": [
    {
      "symbol": "ethbtc",
      "base_coin": "eth",
      "price_precision": 8
    }
  ]
}

2. Get Order Book Depth

Endpoint: /v1/depth
Parameters:

• symbol (required)
• type (step0, step1, step2)

User Account APIs

1. Check Account Balance

Endpoint: /v1/account
Method: POST
Required Parameters:

• api_key
• time
• sign

2. Create New Order

Endpoint: /v1/order
Order Types:

• Limit orders (type=1)
• Market orders (type=2)

👉 Explore advanced order types

WebSocket API

Subscription Channels

Example Subscription:

{"event":"sub","params":{"channel":"market_btcusdt_ticker"}}

FAQ Section

Q: How do I handle API rate limits?

A: Implement request throttling and monitor response headers for rate limit information.

Q: Why is my order signature failing?

A: Verify your timestamp is in milliseconds and parameters are sorted alphabetically before signing.

Q: What's the difference between REST and WebSocket APIs?

A: WebSocket APIs provide real-time data with lower latency, while REST APIs are better for occasional requests.

Q: How often should I refresh my API keys?

A: We recommend rotating keys every 90 days for security.

Code Examples

Python: REST API Request

import requests
import hashlib
import time

params = {
    "api_key": API_KEY,
    "time": int(time.time() * 1000)
}
sign = hashlib.sha256(f"api_key{params['api_key']}time{params['time']}{SECRET_KEY}".encode()).hexdigest()
params["sign"] = sign

response = requests.post("https://api.crypto.com/v1/account", data=params)

JavaScript: WebSocket Connection

const ws = new WebSocket('wss://ws.crypto.com/kline-api/ws');
ws.onmessage = (event) => {
    console.log(JSON.parse(event.data));
};

Best Practices

1. Error Handling: Always check response codes and implement retry logic
2. Security: Never expose Secret Keys in client-side code
3. Performance: Use WebSocket connections for real-time data
4. Monitoring: Track API usage metrics and error rates

For complete implementation details, refer to the official documentation.

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