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HEX Data Extractor

A Chrome extension that automatically captures transaction data when airdrop claims fail due to insufficient funds. Built by Zun.

🎯 What This Does

When you try to claim an airdrop but your wallet doesn't have enough gas, the transaction fails. This extension captures the transaction details so you can claim it later from a funded wallet.

Captured Data:

  • Airdrop Contract Address - The contract you're claiming from
  • Claim Hex Data - The encoded function call data
  • Claim Value (WEI) - The value to send with the transaction

📦 Installation

Step 1: Download

  1. ⬇️ Click here to download the extension
  2. Extract the downloaded zip file to a folder on your computer

Step 2: Install in Chrome

  1. Copy and paste this in your browser address bar: chrome://extensions/
  2. Enable Developer mode (toggle in top-right corner)
  3. Click Load unpacked
  4. Select the extracted folder
  5. The extension icon will appear in your toolbar

🎮 How to Use

  1. Install the extension (see above)
  2. Refresh the airdrop website where you're having the issue
  3. Perform the claim transaction as normal - it will fail due to insufficient funds
  4. Click the extension icon - you'll see a red badge indicating captured data
  5. Copy the values (Contract Address, Hex Data, Value)
  6. Use the data to execute the transaction from a funded wallet

📊 Example

When a transaction fails with:

insufficient funds for gas * price + value: have 0 want 1022146507666098

The extension captures:

  • Airdrop Contract Address: 0xd59070d4d230ee196998b9cf88f6706b43e5f88a
  • Claim Hex Data: 0xed810bc6000000...
  • Claim Value (WEI): 0x3a1a3077f72b2

🔒 Privacy

  • ✅ All data stored locally in your browser
  • ✅ No external servers or tracking
  • ✅ Only captures failed "insufficient funds" transactions
  • ✅ Open source

🐛 Troubleshooting

Not detecting transactions?

  • Refresh the website after installing the extension
  • Make sure the extension is enabled in chrome://extensions/

No badge appearing?

  • The badge only appears when transactions are captured
  • Make sure you're getting an "insufficient funds" error

Built by Zun