How to Track Ethereum Transaction Status with FastAPI API

#fastapi #cryptocurrency #python #webdev

Tracking Ethereum transaction status can be tricky, especially when you want reliable, real-time updates. Using the Crypto API Service, you can easily check if a transaction is pending, confirmed, or failed.

In this tutorial, we’ll create a Python async script to query the transaction status of an Ethereum transaction using the API.

1️⃣ Setup

Python 3.11+
Install dependencies:

pip install httpx asyncio

RapidAPI key (subscribe to Crypto API Service)

2️⃣ Example Python Script

Create check_eth_tx.py:

# check_eth_tx.py
import asyncio
import httpx
import logging

logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)

API_URL = "https://api.aigoretech.cloud/api/v1/crypto/tx_status"
API_KEY = "YOUR_RAPIDAPI_KEY"  # replace with your RapidAPI key

async def get_tx_status(tx_hash: str):
    """Async function to fetch Ethereum transaction status"""
    async with httpx.AsyncClient() as client:
        try:
            resp = await client.get(
                API_URL,
                params={"chain": "eth", "tx_hash": tx_hash},
                headers={"X-RapidAPI-Key": API_KEY}
            )
            resp.raise_for_status()
            data = resp.json()
            logger.info(f"Transaction data: {data}")
            return data
        except httpx.HTTPError as e:
            logger.error(f"Failed to fetch transaction: {e}")
            return None

async def main():
    tx_hash = "0x123abc...your_tx_hash_here"
    tx_data = await get_tx_status(tx_hash)
    if tx_data:
        print(f"Transaction Hash: {tx_data['tx_hash']}")
        print(f"Status: {tx_data['status']}")
        print(f"Message: {tx_data.get('message', '')}")

if __name__ == "__main__":
    asyncio.run(main())

3️⃣ Example Output

{
  "status": "confirmed",
  "tx_hash": "0x123abc...your_tx_hash_here",
  "message": "Transaction successfully processed"
}

Console output:

Transaction Hash: 0x123abc...your_tx_hash_here
Status: confirmed
Message: Transaction successfully processed

4️⃣ How to Run

Save script as check_eth_tx.py
Replace YOUR_RAPIDAPI_KEY with your RapidAPI key
Run:

python check_eth_tx.py

Check console to see the status of your Ethereum transaction

5️⃣ Closing

With this script, you can quickly check Ethereum transaction status without running your own node or relying on multiple providers.

This is perfect for wallets, dApps, or monitoring tools. Explore more endpoints like balance or token transfers using the Crypto API Service on RapidAPI.

Suggested Tags

python, fastapi, crypto, ethereum, api, tutorial

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