From $2 · Base Instant Smart Contract Audit Two tiers — a $2 static pre-check (reentrancy, access control, integer overflow) or a $20 AI deep audit across Solidity / Rust / Move. Severity-ranked findings in minutes, paid in USDC. Run an audit → Case Study · Critical Reentrancy Critical Found Before Deploy A real contract, a real critical reentrancy vector — flagged before it went live. See the full detection process and severity-ranked report. Read the case study → Case Study · High Signature Replay — the Bug Behind Bridge Hacks A signed message not bound to contract address or chain can be replayed cross-contract — the pattern behind multiple bridge hacks. See the full detection. Read the case study → Case Study · Critical Storage Collision in Proxies A proxy storing its implementation in slot 0 collides with the implementation's storage — a single collision turns an upgrade into a takeover. Read the case study → Case Study · Critical Owner Takeover via Missing Access Control A public owner-change function with no onlyOwner — or an owner never initialized in the constructor. The #1 way contracts get taken over. Read the case study → Case Study · Critical Unsafe Calls and Privilege Leaks approveAndCallcode — approval plus arbitrary execution lets a malicious spender drain the freshly-approved allowance. Also unvalidated low-level calls. Read the case study → Case Study · High tx.origin Authorization — the Phishing Flaw require(tx.origin == owner) lets a phished user's authority be inherited by any intermediate contract — including voting and payments. Read the case study → Case Study · Medium Integer Overflow — the Arithmetic Bomb Unchecked arithmetic wraps balances around — a 255+1 becomes 0, and subtraction-before-check underflows to a huge balance. The #1 bug of early DeFi. Read the case study → Case Study · Critical delegatecall — Foreign Code, Your Storage delegatecall runs code in your contract's storage context — one unchecked call lets foreign code overwrite owner and drain funds. Read the case study → Case Study · High selfdestruct — the Kill Switch selfdestruct bricks the contract and force-sends its balance. One reachable call without the right guard = irreversible destruction. Read the case study →