Pine Script Part 8: Full Automatic Bot & API Integration

This chapter covers the complete automation pipeline used by real algo traders.

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1. Full Automation Flow

1. Strategy → Signal
2. Alert → Trigger
3. Webhook → JSON message
4. Bot → Processes JSON
5. Bot → Sends order via exchange API
6. Exchange → Executes order

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2. Webhook JSON

{
  "signal": "LONG",
  "symbol": "BTCUSDT",
  "price": "{{close}}",
  "time": "{{timenow}}"
}

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3. Python Bot (Core)

from flask import Flask, request
import requests, hmac, hashlib, time

app = Flask(__name__)

API_KEY = "YOUR_API_KEY"
SECRET_KEY = "YOUR_SECRET_KEY"

BASE_URL = "https://api.mexc.com"

def sign(q):
    return hmac.new(SECRET_KEY.encode(), q.encode(), hashlib.sha256).hexdigest()

def send_order(side, symbol, amount):
    ts = int(time.time()*1000)
    q = f"symbol={symbol}&side={side}&type=MARKET&quantity={amount}&timestamp={ts}"
    sig = sign(q)
    url = f"{BASE_URL}/api/v3/order?{q}&signature={sig}"
    h = {"X-MEXC-APIKEY": API_KEY}
    return requests.post(url, headers=h).json()

@app.route('/webhook', methods=['POST'])
def webhook():
    d = request.json
    signal = d["signal"]
    symbol = d["symbol"]
    price = float(d["price"])
    amt = 50/price

    if signal == "LONG": send_order("BUY", symbol, amt)
    if signal == "SHORT": send_order("SELL", symbol, amt)

    return {"ok": True}

app.run(port=5000)

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4. Server Setup

sudo apt update
sudo apt install python3 python3-pip
pip install flask requests
python bot.py

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5. API Security

• Disable withdrawals
• Restrict IP
• Allow trade only
• Never expose keys

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6. Order Types

• MARKET
• LIMIT
• STOP LOSS
• TAKE PROFIT

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7. alert() JSON

msg = '{"signal":"LONG","symbol":"BTCUSDT","price":' + str.tostring(close) + '}'
alert(msg, alert.freq_once_per_bar_close)

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8. Logging

import logging
logging.basicConfig(filename="bot.log", level=logging.INFO)

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9. Advanced Bot Features

• Retry
• Websockets
• Multi-symbol
• Position monitoring
• Portfolio allocation

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10. Premium Benefits

https://sancoqhub.com/go/tradingview

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11. Conclusion

You now understand the full automation structure.
Next chapter: Part 9 – Multi-Strategy & Portfolio Algo Systems