Analyzing Mempool

Contents

Overview | Prerequisites | Instructions | Output | Error Handling | Examples | Resources

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

• Install Python 3.8+ with requests library

• Configure Ethereum RPC URL (default: public endpoint, or set ETH_RPC_URL )

• Verify internet access for RPC calls

Instructions

Step 1: Navigate to Scripts Directory

cd ${CLAUDE_SKILL_DIR}/scripts

Step 2: Choose a Command

• View pending transactions: python mempool_analyzer.py pending

• Analyze gas prices: python mempool_analyzer.py gas

• Detect pending DEX swaps: python mempool_analyzer.py swaps

• Scan MEV opportunities: python mempool_analyzer.py mev

• Get mempool summary: python mempool_analyzer.py summary

• Watch specific contract: python mempool_analyzer.py watch 0x7a250d...

Alternatively, customize with flags:

python mempool_analyzer.py pending --limit 100 # Limit results python mempool_analyzer.py --chain polygon gas # Use different chain python mempool_analyzer.py --chain arbitrum pending # Or use Arbitrum

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 (--format json )

Error Handling

See ${CLAUDE_SKILL_DIR}/references/errors.md for:

• RPC connection issues and timeout recovery

• Mempool access limitations per chain

• Transaction decoding errors and fallbacks

• Gas analysis edge cases

Examples

Example 1: Check gas before sending transaction:

python mempool_analyzer.py gas

Use "Fast" for quick confirmation

Example 2: Monitor for large pending swaps:

python mempool_analyzer.py swaps --limit 200 # 200: max results to scan

Example 3: Research MEV opportunities:

python mempool_analyzer.py mev -v

See ${CLAUDE_SKILL_DIR}/references/examples.md for more usage patterns.

Resources

• ${CLAUDE_SKILL_DIR}/references/implementation.md

• Gas analysis, MEV detection, multi-chain details

• Ethereum JSON-RPC - RPC specification

• Flashbots - MEV research and infrastructure

• DEX Subgraphs - Pool and swap data

• Supports: Ethereum, Polygon, Arbitrum, Optimism, Base