If you were using MythX before March 31st, you already know. ConsenSys quietly sunset the entire MythX suite. One day it was there, the next your CI pipeline was just... failing silently. They pointed people toward Diligence Fuzzing, which is a great property-testing tool but it's not an audit tool. Writing fuzz harnesses isn't the same as pasting a contract and getting a vulnerability report back.
I've been building in Web3 security tooling for a while, and I kept running into the same wall: traditional audits cost $10K–$150K and take weeks, open-source scanners like Slither are powerful but raw, and the affordable SaaS middle ground basically disappeared when MythX went dark.
So I spent several months building SmartContractAuditor.ai an AI-powered audit tool that fills that gap.
What it does:
Paste your Solidity, Vyper, or Rust contract and get a categorized report in under 60 seconds
Findings are split into Critical / High / Medium / Low severity
Each finding includes a plain-English explanation of why it's dangerous and how to fix it (not just "SWC-107 detected" with a link to a spec)
Fix verification apply the fix, re-paste, confirm it's gone
PDF report export for sharing with your team or investors
It catches the stuff that causes real losses reentrancy, access control issues, oracle manipulation patterns, flash loan attack surfaces, tx.origin misuse, signature replay, unchecked external calls.
It's free to try 3 scans, no signup required. Just go to the site and paste a contract.
I'm not posting this as a finished, polished product launch. I'm posting because I want feedback from people who actually write smart contracts.
Specifically:
What does the output miss that Slither/Mythril would catch?
Is the severity categorization reasonable, or is it over/under-flagging?
What would make this actually fit into your dev workflow?
Is there a specific vulnerability class you'd want it to prioritize?
If you've been looking for something to replace MythX in your pipeline, give it a shot and tell me what you think either in the comments here or on the site itself. The tool is at smartcontractauditor.ai no account needed for the first 3 scans.