AI smart contract auditor
Guardix is an AI auditor for Solidity on EVM chains. It audits one repo at one commit for a flat $200 and returns a report in 1–3 hours.
What an AI auditor checks, and what it doesn't
It checks known vulnerability classes, logic bugs, and access-control and accounting issues. Every finding comes with a severity, a description, and the exact code location.
It doesn't judge whether your token economics make sense, and it doesn't replace a human review before a high-value launch. If you want that comparison, see AI vs manual smart contract audits.
Guardix vs other AI audit tools (as of Oct 2026)
| Guardix | Nethermind AuditAgent | SolidityScan | Free AI skills | |
|---|---|---|---|---|
| Price | Guardix $200 flat per audit | Nethermind AuditAgent $0.05 per billable line of code | SolidityScan From $29.99 per report; $199.99 or $499.99 per month | Free AI skills Free (you pay for your own model) |
| Public benchmark | Guardix EVMBench: 104 of 117* | Nethermind AuditAgent EVMBench: 67% recall, 120 vulnerabilities* | SolidityScan Not public | Free AI skills Not public |
| Time | Guardix 1–3 hours | Nethermind AuditAgent Usually under an hour, up to a few hours | SolidityScan Up to 5 minutes per scan | Free AI skills Depends on setup |
| Re-audit | Guardix Same $200 | Nethermind AuditAgent Billed again per line | SolidityScan Billed again per report (unlimited on Pro) | Free AI skills Free |
*Both results are self-reported on different versions of EVMBench, so they aren't directly comparable.
False positives
This is the most common complaint about AI auditors, and it's a fair one. Every Guardix finding points to the exact code and explains why it's a problem, so you can confirm or dismiss it in minutes instead of guessing. If a run fails, you get a re-run or full credit.
Is a cheap AI audit a catch?
No. On EVMBench, Guardix detected 104 of 117 known vulnerabilities (88.9%) across all 40 official audits. The best use is as a pre-audit: fix what it finds, then send cleaner code to your paid auditors.
Run it your way
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In the web app at guardix.io.
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From the terminal with the Guardix CLI.
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Inside Claude Code with the plugin:
/plugin marketplace add guardixdev/guardix
FAQ
- What is an AI smart contract auditor?
- A tool that reads your contract code and reports security issues automatically, without a human auditor in the loop.
- How accurate is an AI audit tool?
- On EVMBench, Guardix found 104 of 117 known vulnerabilities. Check any tool's public benchmark before you trust it.
- How much does it cost?
- $200 per audit, covering one repo at one commit. There's no subscription.
- Which languages does it support?
- Solidity on EVM chains.
- Can I use it before a manual audit?
- Yes, that's the main use. See pre-audit .