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SKILL verified MIT Self-run

Skill 12 Gas Optimization

skill-vaquarkhan-web3-agent-skills-skill-12-gas-optimization · by vaquarkhan

Optimizes transaction gas via EIP-1559 fee prediction, nonce management, private transaction submission, and EIP-4844 blob fee handling. Use when estimating fees, fixing stuck transactions, or submitting MEV-sensitive txs.

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Install

$ agentstack add skill-vaquarkhan-web3-agent-skills-skill-12-gas-optimization

✓ scanned · ✓ verified — works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

  • ✓ Prompt-injection patterns
  • ✓ Secret / credential exfiltration
  • ✓ Dangerous shell & filesystem operations
  • ✓ Untrusted network calls
  • ✓ Known-malicious package signatures

What it can access

  • ✓ Network access No
  • ✓ Filesystem access No
  • ✓ Shell / process execution No
  • ✓ Environment & secrets No
  • ✓ Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

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About

Gas Optimization

When to Use

  • Estimating transaction costs before execution
  • Managing nonces for sequential or parallel txs
  • Submitting private transactions (Flashbots, MEV-Share)
  • Handling EIP-4844 blob transactions (L2 data availability)
  • Recovering stuck transactions (speed up / cancel)

Prerequisites

  • MCP: blockchain-rpc-server
  • Skill-15 for private tx routing on mainnet swaps

EIP-1559 Fee Strategy

maxPriorityFeePerGas = baseFee * 0.1 (min 1 gwei on Ethereum)
maxFeePerGas = baseFee * 2 + maxPriorityFeePerGas
  1. Fetch eth_feeHistory for last 10 blocks
  2. Use 75th percentile of priority fees
  3. On L2s (Arbitrum, Base, Optimism): use L1 data fee + L2 execution fee

Nonce Management

  • Query eth_getTransactionCount with pending tag
  • Use nonce manager for parallel txs (increment locally, track pending)
  • Cancel: send 0 ETH self-transfer with same nonce, +20% gas
  • Speed up: resubmit with same nonce, +15% maxFeePerGas

Private Transactions

| Network | Method | |---------|--------| | Ethereum | Flashbots Protect RPC, MEV-Share | | Polygon | Fastlane private RPC | | Base/Arbitrum | Sequencer private orderflow (limited) |

Use private submission for swaps, liquidations, and any MEV-exposed operation.

Blob Fees (EIP-4844)

For rollup batch submissions or blob-carrying txs:

blobGasPrice = getBlobBaseFee()
totalBlobCost = blobGasUsed * blobGasPrice

Monitor excessBlobGas in block header for fee spikes.

L2 Gas Notes

| Chain | Gas Token | Notes | |-------|-----------|-------| | Arbitrum | ETH | L1 calldata cost dominates | | Optimism | ETH | L1 fee + L2 fee split | | Base | ETH | OP Stack, similar to Optimism | | Polygon | POL | Low base fees, occasional spikes |

References

  • references/fee-oracles.md — RPC methods and fallback APIs

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

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Versions

  • v0.1.0 Imported from the upstream source.

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