Microsoft open-sources Rampart and Clarity: Bringing AI agent security earlier in the development lifecycle
Microsoft released two open-source AI agent security tools, Rampart and Clarity, on May 21, 2026. All three sources confirm that the goal is to shift security checks earlier and support agentic AI security engineering. On specific uses, the sources consistently mention red-team testing and helping developers build safer agents, but phrases such as “assisting incident response” and “handling ongoing breaches” appear in only one source and cannot be confirmed from the provided material.