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TestMachine, attack simulation for smart contracts that reports exploitable bugs

1•john_testmach•1h ago
Hey HN,

We built TestMachine after watching teams drown in AI reports full of theoretical vulnerabilities that never get fixed because nobody knows which ones actually matter.

We built two tools. Azimuth runs real attack simulations against your smart contracts and only surfaces vulnerabilities where the attack actually succeeds. No more triage hell on False Positives. Token Custody watches on-chain token behavior continuously after launch and alerts you when risk profiles shift — useful because tokens often behave differently days or weeks post-deploy when upgrades or integrations kick in.

The interesting technical piece is that we execute simulations using reinforcement learning in a forked chain environment, so we can replay real-world state against your contracts rather than running static analysis guesses.

Coinbase and many auditors use it. Happy to answer questions about the approach. Would love feedback from anyone doing smart contract security. Or go check it out (we just added a free trial)

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