Free tool · Web3 & Solidity
Free smart contract check
Paste your Solidity contract and get a security and gas review in about 30 seconds. Issues are ranked from critical to informational, each with a concrete fix.
Good to know
What does the smart contract check look for?
It scans Solidity for common red flags (old compilers without overflow protection, tx.origin authorisation, unprotected admin functions, low-level calls that enable reentrancy, weak on-chain randomness, delegatecall and selfdestruct), then an AI reviewer looks for logic, access-control, reentrancy, oracle and gas issues specific to your code.
Is this a smart contract audit?
No. It's a fast first look that catches many common mistakes. Contracts that will hold real value need a careful manual review and an independent audit before mainnet; we can help with both.
Is my code stored?
No. Your code is sent to our AI provider to produce the review and isn't saved by us. Don't paste private keys, seed phrases or secrets.