Use when testing PRPM CLI commands locally - provides build, environment setup, execution workflow, contract testing to verify documented behavior matches implementation, and comprehensive cross-format conversion testing against local registry.
Use when implementing complex multi-step tasks, fixing critical bugs, or when quality and completeness matter more than speed - ensures comprehensive implementation without shortcuts through systematic analysis, implementation, and verification phases.
Use when encountering TypeScript any types, type errors, or lax type checking - eliminates type holes and enforces strict type safety through proper interfaces, type guards, and module augmentation.
Creating agents.md files with plain markdown format (NO frontmatter) - use when creating agents.md packages for PRPM or generating project context files.
Expert guidance for testing and validating GitHub Actions workflows before deployment - catches cache errors, path issues, monorepo dependencies, and service container problems that local testing misses.
Use Karen for brutally honest repository reviews with market-aware Karen Scores. Analyzes entire codebases for over-engineering, completion honesty, and whether the project actually solves a real problem.