Best AI agents for smart contract security (2026)
AI auditors and agents that review smart contracts for exploitable bugs before and after deployment, plus tools that help build and check Web3 code. We list 6 tools for smart contract security below, each with a link-checked page, pricing as the maker states it and alternatives.
Updated
6 tools: 1 open source, 5 pricing on the maker's site.
OpenZeppelin MCP
OpenZeppelin's official MCP servers that let agents generate secure smart contracts from audited OpenZeppelin libraries for Solidity, Cairo, Stellar and more.
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Almanax
AI security engineer that finds vulnerabilities in applications and smart contracts and reviews pull requests; acquired by depthfirst (June 2026).
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ChainGPT
Suite of crypto AI tools: chatbot, smart-contract generator and auditor.
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Nora
Deep-reasoning AI coding agent for building and securing Web3 apps and smart contracts.
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Octane
Agentic security analysis that finds exploitable vulnerabilities in mission-critical code, including DeFi smart contracts.
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Sherlock AI
Sherlock's AI auditor for smart-contract vulnerabilities.
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Popular with: Crypto traders · Security engineers
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