ystar-defuse is an open-source CLI tool that provides AI-powered protection against delayed prompt injection attacks. It is designed for AI developers and security engineers to enhance the security and governance of AI agent systems at runtime.
ystar-defuse is a Security & compliance platforms product. It focuses on protecting AI systems from delayed prompt injection attacks using runtime analysis. It is built as an open-source project for AI developers and security engineers. ystar-defuse is open source under the MIT license. ystar-defuse is available on the web and the command line.
Behind ystar-defuse is liuhaotian2024-prog, and the product first shipped in 2026. Development happens publicly on GitHub with 2 commits in the last 90 days. PulseGate's similarity index finds few close equivalents — ystar-defuse occupies a relatively distinct niche. Key capabilities include prompt injection protection, AI security, and runtime governance.
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