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claude-code

Skillshub optimizing-gas-fees

install
source · Clone the upstream repo
git clone https://github.com/ComeOnOliver/skillshub
Claude Code · Install into ~/.claude/skills/
T=$(mktemp -d) && git clone --depth=1 https://github.com/ComeOnOliver/skillshub "$T" && mkdir -p ~/.claude/skills && cp -r "$T/skills/jeremylongshore/claude-code-plugins-plus-skills/optimizing-gas-fees" ~/.claude/skills/comeonoliver-skillshub-optimizing-gas-fees && rm -rf "$T"
manifest: skills/jeremylongshore/claude-code-plugins-plus-skills/optimizing-gas-fees/SKILL.md
tags
#crypto#cost-optimization#optimizing-gas
source content

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: 
    ETHERSCAN_API_KEY
    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
  2. Estimate transaction cost for known operations or custom gas limits (available operations: 
    eth_transfer
    , 
    erc20_transfer
    , 
    erc20_approve
    , 
    uniswap_v2_swap
    , 
    uniswap_v3_swap
    , 
    sushiswap_swap
    , 
    curve_swap
    , 
    nft_mint
    , 
    nft_transfer
    , 
    opensea_listing
    , 
    aave_deposit
    , 
    aave_withdraw
    , 
    compound_supply
    , 
    compound_borrow
    , 
    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
  3. Find the optimal transaction window with lowest expected gas: 
    cd ${CLAUDE_SKILL_DIR}/scripts && python3 gas_optimizer.py optimal
  4. 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
  5. Predict future gas prices for a given hour: 
    cd ${CLAUDE_SKILL_DIR}/scripts && python3 gas_optimizer.py predict --time 14
  6. Compare gas prices across multiple chains: 
    cd ${CLAUDE_SKILL_DIR}/scripts && python3 gas_optimizer.py compare
  7. 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

ChainNative TokenBlock Time
EthereumETH~12 sec
PolygonMATIC~2 sec
ArbitrumETH~0.25 sec
OptimismETH~2 sec
BaseETH~2 sec

Price Tiers

TierPercentileConfirmation Time
Slow10th10+ blocks (~2+ min)
Standard50th3-5 blocks (~1 min)
Fast75th1-2 blocks (~30 sec)
Instant90thNext block (~12 sec)

Error Handling

See 

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

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

Examples

See 

${CLAUDE_SKILL_DIR}/references/examples.md
for:

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

Resources