gas-optimizer

Ethereum transaction fee optimizer for fast, reliable, and budget-aware transactions. Automatically calculates optimal maxFeePerGas and maxPriorityFeePerGas.

Features

• Optimize gas fees for different speeds: slow, normal, fast
• Optional max budget for gas cost
• Send transactions using private key
• Works with Ethereum testnets and mainnet
• Server-side usage only

Installation

npm install gas-optimizer

Environment Variables

Create a .env file:

RPC_URL=https://your_rpc_url
REC_ADDR=0xRecipientAddress
PRIVATE_KEY=your_private_key

CLI Usage

npx gas-optimizer

or, if installed locally:

npm run cli

This will:

1. Fetch network gas data
2. Optimize fees based on speed
3. Send a transaction with calculated fees

API Usage

import { sendOptimizedTransaction } from "gas-optimizer";
import { ethers } from "ethers";

const txResponse = await sendOptimizedTransaction(
  {
    to: "0xRecipientAddress",
    value: ethers.parseEther("0.001"),
  },
  {
    speed: "fast",
    rpcUrl: process.env.RPC_URL!,
    privateKey: process.env.PRIVATE_KEY!,
    maxBudget: 5_000_000_000_000_000n, // optional
  }
);

console.log("Transaction sent:", txResponse);

Options

| Speed | Blocks | Alpha | Priority Multiplier | Percentile | | ------ | ------ | ----- | ------------------- | ---------- | | slow | 15 | 0.2 | 0.75 | 0.7 | | normal | 10 | 0.3 | 1.0 | 0.85 | | fast | 5 | 0.5 | 1.5 | 0.95 |

License

ISC