Optimizing Gas Fees

Overview

Gas fee optimization skill that:

• Fetches real-time gas prices from multiple sources
• Estimates transaction costs in ETH and USD
• Analyzes historical patterns to find optimal timing
• Predicts future gas prices
• Compares gas across multiple chains

Prerequisites

• Python 3.8+ with requests library
• Network access to RPC endpoints
• Optional: ETHERSCANAPIKEY for higher rate limits
• Optional: Custom RPC URLs via environment variables

Instructions

1. Check current gas prices (optionally for a specific chain):

   cd ${CLAUDE_SKILL_DIR}/scripts && python3 gas_optimizer.py current
   cd ${CLAUDE_SKILL_DIR}/scripts && python3 gas_optimizer.py current --chain polygon

1. Estimate transaction cost for known operations or custom gas limits (available operations: ethtransfer, erc20transfer, erc20approve, uniswapv2swap, uniswapv3swap, sushiswapswap, curveswap, nftmint, nfttransfer, opensealisting, aavedeposit, aavewithdraw, compoundsupply, compoundborrow, bridge_deposit):

   cd ${CLAUDE_SKILL_DIR}/scripts && python3 gas_optimizer.py estimate --operation uniswap_v2_swap --all-tiers
   cd ${CLAUDE_SKILL_DIR}/scripts && python3 gas_optimizer.py estimate --gas-limit 150000 --tier fast  # 150000 = configured value

1. Find the optimal transaction window with lowest expected gas:

   cd ${CLAUDE_SKILL_DIR}/scripts && python3 gas_optimizer.py optimal

1. View gas patterns (hourly or daily):

   cd ${CLAUDE_SKILL_DIR}/scripts && python3 gas_optimizer.py patterns
   cd ${CLAUDE_SKILL_DIR}/scripts && python3 gas_optimizer.py patterns --daily

1. Predict future gas prices for a given hour:

   cd ${CLAUDE_SKILL_DIR}/scripts && python3 gas_optimizer.py predict --time 14

1. Compare gas prices across multiple chains:

   cd ${CLAUDE_SKILL_DIR}/scripts && python3 gas_optimizer.py compare

1. View base fee history for recent blocks:

   cd ${CLAUDE_SKILL_DIR}/scripts && python3 gas_optimizer.py history --blocks 50

Output

• Current: Base fee, priority fee, and tier prices (slow/standard/fast/instant)
• Estimate: Gas cost in native token and USD for each tier
• Patterns: Historical hourly/daily patterns with low-gas markers
• Optimal: Recommended transaction window with expected savings
• Predict: Gas forecast for specific time with confidence
• Compare: Side-by-side gas prices across chains

Supported Chains

Price Tiers

Error Handling

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

• RPC connection issues
• API rate limiting
• Price feed errors
• Pattern analysis errors

Examples

See ${CLAUDESKILLDIR}/references/examples.md for:

• Quick start commands
• Cost estimation scenarios
• Multi-chain comparison
• Practical workflows

Resources

• EIP-1559 - Fee market specification
• Etherscan Gas Tracker - Reference oracle
• L2Fees - L2 cost comparison