optimizing-gas-fees
Optimize blockchain gas costs by analyzing prices, patterns, and timing. Use when checking gas prices, estimating costs, or finding optimal windows. Trigger with phrases like "gas prices", "optimize gas", "transaction cost", "when to transact".
claude-codecodexopenclaw
Allowed Tools
ReadBash(python3:*)
Provided by Plugin
gas-fee-optimizer
Optimize transaction gas fees with timing and routing recommendations
Installation
This skill is included in the gas-fee-optimizer plugin:
/plugin install gas-fee-optimizer@claude-code-plugins-plusClick to copy
Instructions
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:
ETHERSCANAPIKEYfor higher rate limits - Optional: Custom RPC URLs via environment variables
Instructions
- 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
- 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
- Find the optimal transaction window with lowest expected gas:
cd ${CLAUDE_SKILL_DIR}/scripts && python3 gas_optimizer.py optimal
- 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
- Predict future gas prices for a given hour:
cd ${CLAUDE_SKILL_DIR}/scripts && python3 gas_optimizer.py predict --time 14
- Compare gas prices across multiple chains:
cd ${CLAUDE_SKILL_DIR}/scripts && python3 gas_optimizer.py compare
- 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
| Chain | Native Token | Block Time |
|---|---|---|
| Ethereum | ETH | ~12 sec |
| Polygon | MATIC | ~2 sec |
| Arbitrum | ETH | ~0.25 sec |
| Optimism | ETH | ~2 sec |
| Base | ETH | ~2 sec |
Price Tiers
| Tier | Percentile | Confirmation Time |
|---|---|---|
| Slow | 10th | 10+ blocks (~2+ min) |
| Standard | 50th | 3-5 blocks (~1 min) |
| Fast | 75th | 1-2 blocks (~30 sec) |
| Instant | 90th | Next block (~12 sec) |
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