GitHub Bitcoin Price Tracker API: Monitor BTC Value with Email Alerts

Overview

This Python-based Bitcoin Price Tracker API continuously monitors BTC/USD exchange rates using AlphaVantage data and delivers real-time email notifications every 60 seconds. Ideal for crypto traders and enthusiasts, this solution combines financial data integration with automated alert systems.

Key Features

• Minute-by-minute tracking of Bitcoin prices via AlphaVantage API
• SMTP email integration for instant price alerts
• Customizable parameters for different cryptocurrencies
• Error handling for reliable continuous operation

Technical Implementation

Required Libraries

import requests  # API data fetching
import time      # Interval timing
import smtplib   # Email delivery
import ssl       # Secure connections

Core Components

1. Email Notification System

   def send_email(crypto_symbol, current_price):
       # Configure SMTP server (Gmail example)
       email_from = "[email protected]"
       pswd = "your_password"
       email_to = "[email protected]"
       
       # Create secure SSL context
       context = ssl.create_default_context()
       
       try:
           with smtplib.SMTP_SSL("smtp.gmail.com", 465, context=context) as server:
               server.login(email_from, pswd)
               message = f"Subject: {crypto_symbol} Price Alert\n\nCurrent {crypto_symbol} price: ${current_price}"
               server.sendmail(email_from, email_to, message)
           print("Email notification sent successfully")
       except Exception as e:
           print(f"Email sending failed: {str(e)}")

2. Price Tracking Loop

   api_key = "YOUR_ALPHAVANTAGE_API_KEY"
   symbol = "BTC"
   
   while True:
       url = f"https://www.alphavantage.co/query?function=CURRENCY_EXCHANGE_RATE&from_currency={symbol}&to_currency=USD&apikey={api_key}"
       response = requests.get(url)
       data = response.json()
       
       if "Realtime Currency Exchange Rate" in data:
           current_price = data["Realtime Currency Exchange Rate"]["5. Exchange Rate"]
           print(f"Current BTC Price: ${current_price}")
           send_email(symbol, current_price)
       else:
           print("Error retrieving price data")
       
       time.sleep(60)  # 60-second interval

Security Recommendations

👉 Best practices for API key management
Always store sensitive credentials like API keys and email passwords securely:

• Use environment variables instead of hardcoding
• Implement configuration files with restricted permissions
• Consider using dedicated secret management services

Customization Options

1. Track Multiple Cryptocurrencies

   crypto_list = ["BTC", "ETH", "SOL"]
   for symbol in crypto_list:
       # Modify API call for each cryptocurrency

2. Adjust Notification Frequency

   # Change sleep duration (in seconds)
   time.sleep(300)  # 5-minute intervals

FAQ Section

Q: How do I get an AlphaVantage API key?
A: Visit AlphaVantage's website and sign up for a free account. Free tier includes 25 API requests per day.

Q: Can I use this with non-Gmail email providers?
A: Yes, but you'll need to modify SMTP server settings (e.g., "smtp.office365.com" for Outlook).

👉 Compare crypto exchange APIs
Q: Why is my script stopping after several hours?
A: This could be due to API rate limits. Consider adding error recovery logic or upgrading your API plan.

Advanced Implementation Tips

• Add price change percentage calculations
• Implement historical price tracking
• Create threshold-based alerts (e.g., notify when BTC drops below $X)
• Integrate with messaging platforms like Slack or Telegram

Remember to test your implementation thoroughly before deployment, and monitor script performance regularly for optimal results.