premortem - Stress-test high-stakes features before implementation
Analyzes a feature through security, reliability, and user/business lenses, then prioritizes failure scenarios and designs mitigations.
Tags
Updated: 2026-09-28Capabilities
Typical Inputs
Typical Outputs
What this skill does
- Clarify feature scope
- Explore the codebase
- Generate security scenarios
- Generate reliability scenarios
- Analyze business risks
- Rank failure scenarios
- Prioritize with users
- Design concrete mitigations
- Verify mitigation plans
- Create implementation tasks
Inputs
- Feature or change description
- Codebase files
- User scenario priorities
Outputs
- Feature summary
- Failure scenario rankings
- Mitigation plans
- Implementation tasks
Requirements
- Codebase access
- Read, Grep, and Glob tools
- Bash git access
- Task agent support
- AskUserQuestion support
- Three concurrent Explore agents