How to Access Real-Time ETH Trading Data via API

OKCoin API Overview

OKCoin provides a robust suite of developer tools to integrate trading functionalities seamlessly into applications. Users can create API keys with varying permissions to automate trading, withdrawals, and market data retrieval.

Key features accessible via API:

Fetch real-time market prices
Retrieve order book depth
Check available/frozen balances
Monitor open orders
Execute buy/sell orders
Batch order cancellations
Fast withdrawals to verified addresses

API Integration Methods

Choose the optimal approach based on your technical requirements:

1. REST API

Ideal for spot trading and withdrawals, REST offers:

URL-based resource access
Standard HTTP methods (GET/POST)
Clear request-response structure

👉 Best practices for REST API integration

2. WebSocket API

Recommended for real-time market data due to:

Persistent bidirectional connections
Low-latency push updates
Efficient bandwidth usage

Market Data Endpoints (REST API)

Ticker Endpoint

GET /api/v1/ticker.do

Supported Symbols:

Parameter	Currency Pair
btc_usd	Bitcoin/USD
eth_usd	Ethereum/USD
ltc_usd	Litecoin/USD
etc_usd	Ethereum Classic/USD
bch_usd	Bitcoin Cash/USD

Example Request:

GET https://www.okcoin.com/api/v1/ticker.do?symbol=eth_usd

Sample Response:

{
  "date": "1657824000",
  "ticker": {
    "buy": "1780.42",
    "high": "1825.60",
    "last": "1782.15",
    "low": "1750.30",
    "sell": "1781.97",
    "vol": "45218.39199642"
  }
}

Field Descriptions:

buy: Best bid price
sell: Best ask price
last: Last executed trade
high/low: 24-hour price range
vol: 24-hour trading volume

WebSocket Streaming

For continuous market updates:

Establish WebSocket connection
Subscribe to ETH channels:
- eth_usd.ticker
- eth_usd.depth
Receive push notifications

👉 WebSocket implementation guide

FAQ Section

Q1: How frequently can I call the REST API?
A: OKCoin allows up to 60 requests per second. Implement caching for high-frequency needs.

Q2: Is historical ETH price data available?
A: Use the /api/v1/kline.do endpoint with timeframe parameters (1min/1hour/1day etc.)

Q3: How secure are API transactions?
A: All requests require HMAC-SHA256 signatures. Enable IP whitelisting for added security.

Q4: Can I test trades without real funds?
A: Yes - use the sandbox environment at https://www.okcoin.com/sandbox/

Q5: What's the minimum ETH order size?
A: 0.001 ETH for spot trading via API.

Best Practices

Rate Management: Implement request throttling
Error Handling: Check for error_code in responses
Data Verification: Cross-validate with WebSocket streams
Security: Rotate API keys quarterly

For advanced trading strategies, explore OKCoin's Futures API documentation.