Sui Decompile

Fetch on-chain Sui Move contract source code and let your agent explain how smart contracts work. Scrape from Suivision/Suiscan explorers, analyze DeFi protocols, and understand any contract on Sui.

Sui Decompile Skill

Fetch decompiled source code for on-chain Sui Move packages via block explorers.

GitHub: https://github.com/EasonC13-agent/sui-skills/tree/main/sui-decompile

Suivision (Preferred)

May have official verified source code when available.

URL: https://suivision.xyz/package/{package_id}?tab=Code

Browser workflow:

1. browser action=open profile=openclaw targetUrl="https://suivision.xyz/package/{package_id}?tab=Code"
2. Click module tabs on the left if multiple modules exist
3. Extract code:

() => {
  const rows = document.querySelectorAll('table tr');
  const lines = [];
  rows.forEach(r => {
    const cells = r.querySelectorAll('td');
    if (cells.length >= 2) lines.push(cells[1].textContent);
  });
  return lines.join('\n');
}

Suiscan (Alternative)

URL: https://suiscan.xyz/mainnet/object/{package_id}/contracts

Browser workflow:

1. browser action=open profile=openclaw targetUrl="https://suiscan.xyz/mainnet/object/{package_id}/contracts"
2. Click "Source" tab (default may show Bytecode)
3. Click module tabs if multiple modules
4. Extract code:

() => {
  const rows = document.querySelectorAll('table tr');
  const lines = [];
  rows.forEach(r => {
    const cells = r.querySelectorAll('td');
    if (cells.length >= 2) lines.push(cells[1].textContent);
  });
  return lines.join('\n') || 'not found';
}

Multiple Modules

Packages like DeepBook (0xdee9) have multiple modules:

1. List module tabs from sidebar
2. Click each tab, extract code
3. Save to separate .move files

Examples

Package	Suivision	Suiscan
Sui Framework	suivision.xyz/package/0x2?tab=Code	suiscan.xyz/mainnet/object/0x2/contracts
DeepBook	suivision.xyz/package/0xdee9?tab=Code	suiscan.xyz/mainnet/object/0xdee9/contracts

Use with Other Skills

This skill works great with the Sui development skill suite:

• sui-move: Write and deploy Move smart contracts. Use sui-decompile to study existing contracts, then use sui-move to write your own.
• sui-coverage: Analyze test coverage. Decompile a contract, write tests for it, then check coverage.

Typical workflow:

1. sui-decompile - Study how a DeFi protocol works
2. sui-move - Write your own contract based on learned patterns
3. sui-coverage - Ensure your code is well-tested

Server/Headless Setup

For running on servers without display (CI/CD, VPS, etc.), use Puppeteer with a virtual display to avoid headless detection:

# Install xvfb (virtual framebuffer)
sudo apt-get install xvfb

# Run with virtual display (avoids headless detection)
xvfb-run --auto-servernum node scraper.js

Puppeteer example:

const puppeteer = require('puppeteer');

async function fetchContractSource(packageId) {
  const browser = await puppeteer.launch({
    headless: false,  // Use 'new' headless or false with xvfb
    args: ['--no-sandbox', '--disable-setuid-sandbox']
  });
  
  const page = await browser.newPage();
  await page.goto(`https://suivision.xyz/package/${packageId}?tab=Code`);
  await page.waitForSelector('table tr');
  
  const code = await page.evaluate(() => {
    const rows = document.querySelectorAll('table tr');
    const lines = [];
    rows.forEach(r => {
      const cells = r.querySelectorAll('td');
      if (cells.length >= 2) lines.push(cells[1].textContent);
    });
    return lines.join('\n');
  });
  
  await browser.close();
  return code;
}

Why xvfb? Some sites detect headless browsers. Running with xvfb-run creates a virtual display, making the browser behave like a real desktop browser.

Notes

• Suivision may show official verified source (MovebitAudit)
• Suiscan shows Revela decompiled code
• Decompiled code may not compile directly
• Close browser tabs after use!

Related Skills

This skill is part of the Sui development skill suite:

Skill	Description
sui-decompile	Fetch and read on-chain contract source code
sui-move	Write and deploy Move smart contracts
sui-coverage	Analyze test coverage with security analysis
sui-agent-wallet	Build and test DApps frontend

Workflow:

sui-decompile → sui-move → sui-coverage → sui-agent-wallet
    Study        Write      Test & Audit   Build DApps

All skills: https://github.com/EasonC13-agent/sui-skills