Free tool / Smart-contract security
Free smart-contract security scan.
Paste your Solidity code below. We check 20 vulnerability patterns in under 60 seconds — reentrancy, access control, integer overflow, flash-loan vectors, and more.
No signup · no credit card · runs on hardware we own
Reentrancy detectionExternal calls before state changes
Access controlMissing modifiers, unprotected functions
Integer overflowUnchecked arithmetic in older Solidity
Flash-loan vectorsPrice manipulation, oracle dependencies
Scanning... this takes about 30-60 seconds.