Download Coinbase API Data Using Python

This tutorial demonstrates how to download historical OHLC (Open, High, Low, Close) market data from Coinbase using Python. The script leverages the Pandas, requests, and json libraries to fetch and save data as a CSV file.

Step-by-Step Guide

Prerequisites

Python 3.x installed
Required libraries:
```
pip install pandas requests
```

Python Script

import pandas as pd
import requests
import json

def download_coinbase_data(pair, filename):
    url = f"https://api.pro.coinbase.com/products/{pair}/candles?granularity=86400"
    response = requests.get(url)
    data = json.loads(response.text)
    df = pd.DataFrame(data, columns=["time", "low", "high", "open", "close", "volume"])
    df['time'] = pd.to_datetime(df['time'], unit='s')
    df.to_csv(filename, index=False)
    print(f"Data saved to {filename}")

# Example usage:  
download_coinbase_data("BTC-USD", "Coinbase_BTCUSD_dailydata.csv")

Key Features

Customizable: Adjust the pair parameter (e.g., ETH-USD, LTC-USD) and granularity (e.g., 3600 for hourly data).
Output: Generates a CSV file named Coinbase_[PAIR]_dailydata.csv.

Enhancements

Database Integration: Modify the script to store data in SQLite/PostgreSQL.
Automation: Schedule daily downloads using cron or Windows Task Scheduler.
Error Handling: Add retries for API rate limits or network issues.

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FAQs

1. Is the Coinbase API free to use?

Yes, but rate limits apply. Check Coinbase’s API documentation for details.

2. Can I download minute-level data?

Absolutely! Adjust the granularity parameter (e.g., 60 for 1-minute candles).

3. How do I handle API authentication?

This example uses public endpoints. For private data, include API keys with proper encryption.

Best Practices

Data Validation: Verify timestamps and missing values.
Legal Compliance: Adhere to Coinbase’s Market Data Terms.

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Final Notes

This script is for educational purposes. Cryptocurrency trading involves risks—only invest capital you can afford to lose.

Disclaimer: This content is not financial advice. Past performance does not guarantee future results.