Blockhertz AI Smart Contract Auditor is a free security analysis tool for blockchain developers. Paste any Solidity, Rust, Move, or Vyper smart contract and receive a complete security report in under 60 seconds. Results include a risk score from 0 to 100, findings categorized by severity (Critical, High, Medium, Low), and specific fix recommendations for each vulnerability detected. Available free at blockhertz.com/tools/ai-auditor.

Built by blockchain developers · Used by Web3 teams worldwide · Free to try

Smart Contract Auditor

Audit your smart contract instantly

AI-powered security analysis. Free pre-audit before expensive manual review. Powered by Blockhertz.

Or paste an address in @blockhertz_audit_bot on Telegram →

< 60 seconds

Per audit

Free forever

No signup

Max 30,000 chars

50 more characters needed

Your audit report will appear here

Paste a contract on the left and click Audit Contract to begin

Reentrancy
Access Control
Integer Overflow
Gas Inefficiency

What This Tool Checks

+

Checks

  • ✅Reentrancy vulnerabilities
  • ✅Access control failures
  • ✅Integer overflow/underflow
  • ✅Oracle manipulation vectors
  • ✅Unprotected initializers
  • ✅Unchecked return values
  • ✅Front-running vectors
  • ✅Gas inefficiencies
  • ✅Missing input validation
  • ✅Delegatecall risks

Does not check

  • ⚠️This tool is not a professional security audit
  • ⚠️Does not replace human review
  • ⚠️Cannot verify business logic correctness
  • ⚠️Does not check off-chain components
  • ⚠️Does not provide legal or compliance certification
  • ⚠️Results require human verification before production deployment

AI-assisted analysis only. For production deployments, engage a professional audit firm. See our audit-readiness checklist →

AI Smart Contract Auditor | Blockhertz