🐝 Introducing the PeakeCoin Market API — Trade Smarter with Custom JSON

As PeakeCoin continues to evolve on the Hive blockchain, we're proud to unveil a powerful new utility: the PeakeCoin Market API. Designed for developers, bots, and blockchain automation tools, this API enables seamless integration with Hive Engine trading pairs — all revolving around PeakeCoin (PEK).

This blog post walks you through what the API does, what endpoints are available, and includes the full source code — open for community review and contribution.

🚀 Features

• List supported trading pairs
• Fetch live order books
• Retrieve trading history
• Generate Hive Engine-compatible custom JSON for orders
• Pull best price data using price_fetcher.get_best_price()

📡pek_api.py

from flask import Flask, request, jsonify
from flask_cors import CORS
from price_fetcher import get_best_price
import requests

app = Flask(__name__)
CORS(app)

SUPPORTED_PAIRS = [
    ("PEK", "SWAP.HIVE"),
    ("PEK", "SWAP.BTC"),
    ("PEK", "SWAP.LTC"),
    ("PEK", "SWAP.ETH"),
    ("PEK", "SWAP.DOGE"),
    ("PEK", "SWAP.MATIC"),
    ("PEK", "SWAP.HBD"),
]

HIVE_ENGINE_MARKET_API = "https://api.hive-engine.com/rpc/contracts"

@app.route('/api/pairs')
def api_pairs():
    return jsonify({
        "pairs": [
            {"base": base, "quote": quote} for base, quote in SUPPORTED_PAIRS
        ]
    })

@app.route('/api/orderbook')
def api_orderbook():
    base = request.args.get('base', 'PEK').upper()
    quote = request.args.get('quote', 'SWAP.HIVE').upper()
    payload = {
        "jsonrpc": "2.0",
        "id": 1,
        "method": "getOrderBook",
        "params": {
            "symbol": f"{base}:{quote}",
            "limit": 50
        }
    }
    try:
        r = requests.post(HIVE_ENGINE_MARKET_API, json=payload, timeout=10)
        data = r.json()
        return jsonify(data)
    except Exception as e:
        return jsonify({'error': str(e)}), 500

@app.route('/api/history')
def api_history():
    base = request.args.get('base', 'PEK').upper()
    quote = request.args.get('quote', 'SWAP.HIVE').upper()
    payload = {
        "jsonrpc": "2.0",
        "id": 1,
        "method": "find",
        "params": {
            "contract": "market",
            "table": "trades",
            "query": {"symbol": f"{base}:{quote}"},
            "limit": 50,
            "sort": "desc"
        }
    }
    try:
        r = requests.post(HIVE_ENGINE_MARKET_API, json=payload, timeout=10)
        data = r.json()
        return jsonify({'result': data.get('result', [])})
    except Exception as e:
        return jsonify({'error': str(e)}), 500

@app.route('/api/order', methods=['POST'])
def api_order():
    data = request.json
    username = data.get('username')
    base = data.get('base', 'PEK').upper()
    quote = data.get('quote', 'SWAP.HIVE').upper()
    amount = str(data.get('amount'))
    price = str(data.get('price'))
    side = data.get('side', 'sell').lower()  # 'buy' or 'sell'
    custom_json = {
        "contractName": "market",
        "contractAction": side,
        "contractPayload": {
            "symbol": base,
            "quantity": amount,
            "price": price
        }
    }
    return jsonify({"custom_json": custom_json})

@app.route('/api/price')
def api_price():
    base = request.args.get('base', 'PEK').upper()
    quote = request.args.get('quote', 'SWAP.HIVE').upper()
    price = get_best_price(base, quote)
    if not price:
        return jsonify({'error': f'Could not fetch price for {base}/{quote}'}), 400
    return jsonify({'base': base, 'quote': quote, 'price': price})

if __name__ == '__main__':
    app.run(port=5000)

🌐 API Endpoints

GET /api/pairs

Returns a list of supported trading pairs.

GET /api/orderbook?base=PEK&quote=SWAP.HIVE

Returns the top 50 orders from the Hive Engine order book.

GET /api/history?base=PEK&quote=SWAP.HIVE

Fetches the most recent trades for a given trading pair.

POST /api/order

Accepts a JSON payload and returns a custom_json object compatible with Hive Engine's market contract.

Example Request Payload:

{
  "username": "your-hive-username",
  "base": "PEK",
  "quote": "SWAP.HIVE",
  "amount": "1.000",
  "price": "0.050",
  "side": "buy"
}