analyzing-mempool
Monitor blockchain mempools for pending transactions, gas analysis, and MEV opportunities. Use when analyzing pending transactions, optimizing gas prices, or researching MEV. Trigger with phrases like "check mempool", "scan pending txs", "find MEV", "gas price analysis", or "pending swaps".
Installation
Details
Usage
After installing, this skill will be available to your AI coding assistant.
Verify installation:
npx agent-skills-cli listSkill Instructions
name: analyzing-mempool description: 'Monitor blockchain mempools for pending transactions, gas analysis, and MEV opportunities.
Use when analyzing pending transactions, optimizing gas prices, or researching MEV.
Trigger with phrases like "check mempool", "scan pending txs", "find MEV", "gas price analysis", or "pending swaps".
' allowed-tools: Read, Write, Edit, Grep, Glob, Bash(python:mempool) version: 1.0.0 author: Jeremy Longshore jeremy@intentsolutions.io license: MIT tags:
- crypto
- monitoring
- analyzing-mempool compatibility: Designed for Claude Code, also compatible with Codex and OpenClaw
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
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