for s in swaps[:5]: print(f"Swap by s['sender']: s['amount0_out'] tokens out") Hardcoding a single pair address is fine for testing. A real explorer would query a factory contract to discover all pairs dynamically. Step 4: Making It Useful – Real-Time Monitoring A script that runs once is a toy. A script that runs forever is a tool.
DEX_ABI = '''[ "anonymous": false, "inputs": [ "indexed": true, "name": "sender", "type": "address", "indexed": false, "name": "amount0In", "type": "uint256", "indexed": false, "name": "amount1In", "type": "uint256", "indexed": false, "name": "amount0Out", "type": "uint256", "indexed": false, "name": "amount1Out", "type": "uint256", "indexed": true, "name": "to", "type": "address" ], "name": "Swap", "type": "event" ]''' For a production script, you’d include the full factory and pair ABIs. But this is enough to get started. Here’s a function that fetches the last 100 blocks and extracts every swap event from a specific DEX router: dex explorer script
The data is out there – go explore it. Have you built your own DEX explorer? Found a clever way to detect sandwich attacks or new pool creations? Share your approach in the comments below. A script that runs forever is a tool