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๐Ÿ›ก๏ธ Web38 min readยทAugust 11, 2026

Smart Contract Audit Checklist: What You Must Know Before Launch

CodixSol Team

CodixSol Team

Web3 Security

Deploying a smart contract without an audit is like launching a product without QA. Here's our comprehensive checklist of what every audit should cover.

Smart contract vulnerabilities have cost the Web3 ecosystem billions of dollars. A thorough audit before deployment is not optional โ€” it's essential.

Why Smart Contract Audits Matter

Once deployed, smart contracts are immutable. A bug cannot be patched without migrating the entire contract. High-profile hacks like the DAO hack and Ronin Bridge breach all stemmed from overlooked vulnerabilities.

Our 10-Point Audit Checklist

  • **Reentrancy Attacks** โ€” Can external calls re-enter the function before state updates?
  • **Integer Overflow/Underflow** โ€” Are arithmetic operations safely bounded?
  • **Access Control** โ€” Are admin functions properly restricted?
  • **Front-Running** โ€” Can MEV bots exploit transaction ordering?
  • **Logic Errors** โ€” Does the business logic match the whitepaper exactly?
  • **Gas Optimization** โ€” Are there loops or patterns that could cause out-of-gas errors?
  • **Oracle Manipulation** โ€” Are price feeds from a single, manipulatable source?
  • **Denial of Service** โ€” Can an attacker permanently block contract functions?
  • **Signature Replay** โ€” Are signed messages protected against reuse?
  • **Upgrade Safety** โ€” If using proxies, are storage layouts collision-free?

    • What Happens After the Audit?

    At CodixSol, we provide a detailed PDF report, a severity-classified issue list, and guidance on remediating every finding. We don't just flag problems โ€” we help you fix them.

    Ready for your audit? [Get a free quote](/smart-contract-audit).

    Tags:#Web3#Smart Contracts#Security#Audit

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