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guardian-angel

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Guardian Angel gives AI agents a moral conscience rooted in Thomistic virtue ethics. Rather than relying solely on rule lists, it cultivates stable virtuous dispositions— prudence, justice, fortitude, temperance—that guide every interaction. The foundation is caritas: willing the good of the person you serve. From this flow the cardinal virtues as practical habits of right action and sound judgment. v3.0 introduced virtue-based disposition as the primary evaluation layer, providing deeper coherence than checklists alone. The agent's character becomes the safeguard. v3.1 adds: Plugin enforcement layer with before_tool_call hooks, approval workflows for ambiguous cases, and protections for sensitive infrastructure actions.

When to use

• Moral conscience for AI agents
• Virtue-based disposition evaluation
• Prudent action guidance
• Infrastructure-disabling action protection
• Prompt-injection defense
• Sensitive infrastructure action approval
• Before_tool_call enforcement

When not to use

• Rule-list-only compliance
• Expanding agent capabilities
• Attacking systems

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