MythX Is Gone. Your Smart Contracts Still Need Auditing.

MythX was a ConsenSys Diligence product — one of the first companies to offer subscription-based, SaaS-delivered smart contract security analysis. At its peak, it had multiple tiers (free, Developer at ~$9.99/mo, Professional at ~$49.99/mo, Enterprise) and deep integrations with the Solidity developer toolchain.

ConsenSys, the parent company, experienced significant financial pressure from 2022 onward — multiple rounds of layoffs and a strategic refocus on their core products (MetaMask, Infura). By 2026, MythX was no longer a priority. The service was sunset on March 31, 2026.

ConsenSys pointed former MythX users to Diligence Fuzzing — their property testing / fuzzer tool (formerly Harvey). While Diligence Fuzzing is a capable tool for developers who want to write fuzz tests, it is not an audit replacement: it requires you to write test harnesses, understand fuzzing methodology, and interpret raw outputs without AI assistance.

The subscription-based, zero-setup, SaaS audit experience that MythX provided has had no direct replacement — until now.

Based on how MythX was used, former customers typically wanted:

• Zero-setup security scanning — paste the contract, get a report. No local installation, no Truffle configuration, no fuzz harnesses to write.
• CI/CD integration — catch vulnerabilities before code reaches main. MythX had a Truffle plugin and a CI API that teams wired into GitHub Actions.
• Subscription pricing — a predictable monthly cost rather than per-audit invoices from audit firms.
• Human-readable results — though MythX's output was more technical than conversational, developers wanted to understand what to fix, not just what was flagged.

SmartContractAuditor.ai addresses the first three directly today. CI/CD integration via GitHub Action is on the near-term roadmap.

MythX's core technology was symbolic execution and fuzzing — powerful for finding deterministic bugs, but with key limitations: slow scan times, EVM-only output, and no remediation guidance. Every finding was a low-level SWC-category flag that developers then had to interpret and manually research how to fix.

SmartContractAuditor.ai uses large language model analysis on top of traditional pattern detection. This means:

• 60-second scans instead of 10–30 minute deep scans
• Plain English explanation for every finding — what the vulnerability is, why it matters, and exactly how to fix it with a code example
• Multi-language support — Solidity, Vyper, and Rust/Anchor, not just EVM bytecode
• Fix verification — re-scan after applying fixes to confirm the vulnerability is resolved
• PDF report generation — shareable audit reports for investors, partners, or internal sign-off

The tradeoff: symbolic execution finds certain classes of bugs with mathematical certainty. AI analysis covers a broader range of vulnerability types with high confidence, but results should still be reviewed before high-value deployments.

1. Sign up free — go to smartcontractauditor.ai/dashboard. No credit card required. You get 3 free scans immediately.
2. Paste your contract — copy the Solidity, Vyper, or Rust code you previously analyzed in MythX. Paste it into the analysis panel.
3. Review findings — you'll get a categorized report (Critical / High / Medium / Low) with plain English explanations for each finding, plus the specific line numbers affected.
4. Apply fixes and re-scan — fix the flagged issues in your IDE, then paste the updated code back in to verify the vulnerabilities are resolved.
5. Download your PDF report — upgrade to Pro ($100/mo) to generate a professional PDF audit report for documentation or investor sharing.

If you had MythX Pro ($49.99/mo), SmartContractAuditor.ai Pro at $100/mo gives you 150 scans/month with AI explanations and PDF reports — covering everything MythX Professional covered and more.