Gas Optimizer Skill

Optimize transaction costs and gas usage for AI agents. Track gas spending, find optimal transaction timing, and minimize fees across EVM chains.

Triggers

Use this skill when user mentions:

• "optimize gas"
• "reduce transaction costs"
• "gas tracking"
• "transaction fees"
• "when to send tx"
• "gas price"
• "minimize fees"
• "gas analytics"

Scripts

gas-tracker.js

Track and analyze gas spending across wallets and chains.

node scripts/gas-tracker.js --wallet 0x123... --chain ethereum --days 30
node scripts/gas-tracker.js --analyze --export csv

gas-predictor.js

Predict optimal gas prices and transaction timing.

node scripts/gas-predictor.js --chain ethereum --priority medium
node scripts/gas-predictor.js --predict-window 2h --target-gwei 20

fee-optimizer.js

Optimize pending transactions and batch operations.

node scripts/fee-optimizer.js --optimize-pending
node scripts/fee-optimizer.js --batch-estimate file1.json file2.json

Features

• Multi-chain gas tracking - Ethereum, Base, Arbitrum, Polygon, Optimism
• Historical analysis - Cost patterns, peak/off-peak identification
• Smart timing - Predict when gas will drop below threshold
• Batch optimization - Group transactions to minimize total fees
• Emergency estimation - Fast gas price for urgent transactions
• Cost reporting - Daily/weekly/monthly spend analytics
• Chain comparison - Compare costs across L2s for similar operations

Configuration

Add to OpenClaw config:

{
  "gasOptimizer": {
    "defaultChain": "ethereum",
    "trackWallets": ["0x123...", "0x456..."],
    "alertThresholds": {
      "dailySpend": 0.1,
      "singleTx": 0.05
    },
    "optimization": {
      "targetGwei": 15,
      "maxWaitMinutes": 30,
      "batchWindow": 300
    }
  }
}

Environment Variables

# RPC endpoints for gas data
ETHEREUM_RPC_URL=https://eth-mainnet.g.alchemy.com/v2/YOUR_KEY
BASE_RPC_URL=https://base-mainnet.g.alchemy.com/v2/YOUR_KEY
ARBITRUM_RPC_URL=https://arb-mainnet.g.alchemy.com/v2/YOUR_KEY

# Gas tracking APIs
ETHERSCAN_API_KEY=your_key
BASESCAN_API_KEY=your_key
POLYGONSCAN_API_KEY=your_key

# Alert destinations
TELEGRAM_BOT_TOKEN=your_token
TELEGRAM_CHAT_ID=your_chat_id

Usage Examples

Track wallet gas spending:

node scripts/gas-tracker.js --wallet 0x9A2A75fE7FA8EE6552Cf871e5eC2156B958f581A --chain ethereum --days 7

Get optimal gas price:

node scripts/gas-predictor.js --chain ethereum --priority medium
# Output: { "gasPrice": "25", "confidence": 85, "eta": "3-5 min" }

Analyze transaction batch:

node scripts/fee-optimizer.js --batch-estimate txs.json
# Output: { "individual": 0.045, "batched": 0.028, "savings": 37.8 }

Monitor gas prices:

node scripts/gas-predictor.js --monitor --alert-below 20 --chain ethereum
# Sends alert when gas drops below 20 gwei

Error Handling

All scripts include:

• RPC failure fallback to multiple providers
• Rate limiting protection
• Transaction simulation before sending
• Gas limit estimation with 20% buffer
• Failed transaction analysis and retry logic

Dependencies

• Pure Node.js (v18+)
• ethers.js v6 for blockchain interaction
• node-fetch for API calls
• No external databases required

Output Formats

All scripts support:

• JSON (default)
• CSV export
• Human-readable summary
• Telegram-formatted alerts

Chain Support

Security

• Read-only by default (no private keys needed for tracking)
• All transaction simulations use tenderly/safe mode
• Rate limiting to prevent API abuse
• Input validation for all addresses and amounts
• No automatic transaction sending without explicit confirmation