analyzing-mempool

# Analyzing Mempool ## Overview Monitor Ethereum mempool for pending transactions, analyze gas prices, detect DEX swaps, and identify potential MEV opportunities. Useful for traders, MEV researchers, and protocol developers. ## Prerequisites Before using this skill, ensure you have: - Python 3.8+ with requests library - Ethereum RPC URL (default: public endpoint, or set ETH_RPC_URL) - Internet access for RPC calls ## Instructions ### Step 1: Navigate to Scripts Directory ```bash cd {baseDir}/scripts ``` ### Step 2: Choose Your Command **View Pending Transactions:** ```bash python mempool_analyzer.py pending python mempool_analyzer.py pending --limit 100 ``` **Gas Price Analysis:** ```bash python mempool_analyzer.py gas # Shows distribution, recommendations for slow/standard/fast/instant ``` **Pending DEX Swaps:** ```bash python mempool_analyzer.py swaps # Detects Uniswap, SushiSwap, 1inch pending swaps ``` **MEV Opportunity Scan:** ```bash python mempool_analyzer.py mev # Detects sandwich, arbitrage, liquidation opportunities ``` **Mempool Summary:** ```bash python mempool_analyzer.py summary # Quick overview of pending count, gas, opportunities ``` **Watch Specific Contract:** ```bash python mempool_analyzer.py watch 0x7a250d... # Monitor pending transactions to specific contract ``` ### Step 3: Interpret Results **Gas Recommendations:** - Slow (10th percentile): May take 10+ blocks - Standard (50th percentile): 2-5 blocks - Fast (75th percentile): 1-2 blocks - Instant (90th percentile): Next block likely **MEV Warnings:** - MEV detection is for educational purposes - Real MEV extraction requires specialized infrastructure - Use this for research and understanding mempool dynamics ## Output - Pending transaction lists with gas prices and types - Gas price distribution and recommendations - Detected DEX swaps with amounts and DEX identification - MEV opportunity analysis with estimated profits - JSON output for programmatic use ## Error Handling See `{baseDir}/references/errors.md` for: - RPC connection issues - Mempool access limitations - Transaction decoding errors - Gas analysis fallbacks ## Examples **Check gas before sending transaction:** ```bash python mempool_analyzer.py gas # Use "Fast" for quick confirmation ``` **Monitor for large pending swaps:** ```bash python mempool_analyzer.py swaps --limit 200 ``` **Research MEV opportunities:** ```bash python mempool_analyzer.py mev -v ``` **Use different chain:** ```bash python mempool_analyzer.py --chain polygon gas python mempool_analyzer.py --chain arbitrum pending ``` See `{baseDir}/references/examples.md` for more usage patterns. ## Resources - [Ethereum JSON-RPC](https://ethereum.org/en/developers/docs/apis/json-rpc/) - RPC specification - [Flashbots](https://flashbots.net) - MEV research and infrastructure - [DEX Subgraphs](https://thegraph.com) - Pool and swap data - Supports: Ethereum, Polygon, Arbitrum, Optimism, Base