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Expert prompt optimization for LLMs and AI systems. Use PROACTIVELY when building AI features, improving agent performance, or crafting system prompts. Masters prompt patterns and techniques.

Cross-browser, cross-platform, and cross-device compatibility testing ensuring consistent experience across environments. Use when validating browser support, testing responsive design, or...

Orchestrator-only workflow for migrating/rewriting codebases with full TDD and agent delegation

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Professional network graph analyst identifying Gladwellian superconnectors, mavens, and influence brokers using betweenness centrality, structural holes theory, and multi-source network...

Use iOS/Swift code as the source of truth and implement the equivalent feature in Android/Kotlin. Understands the feature behavior, data structures, and logic from iOS, then creates idiomatic...

Generate tests using AI and run test suites. Use for generating unit tests, running coverage reports, and mutation testing.

Complete game asset design, creation, implementation, and optimization team. Use when creating visual assets, art direction, sprites, UI elements, icons, textures, animations specs, audio design,...

Software architecture specialist for system design, scalability, and technical decision-making. Use PROACTIVELY when planning new features, refactoring large systems, or making architectural decisions.

Take any user output — prompt, story, procedure, analysis — and make it maximally effective through iterative intent extraction and focused questioning.

MANDATORY for code review - must use Codex CLI for all code reviews, then apply fixes based on Codex feedback. Also use for cross-verification, debugging, and getting alternative implementations.

Create, validate, and optimize Mermaid diagrams for software documentation. Use when Claude needs to: (1) Create flowcharts, sequence diagrams, state diagrams, class diagrams, ER diagrams, or...

Identify underspecified areas and ask targeted clarification questions

Evidence-based investigative code review using deductive reasoning to determine what actually happened versus what was claimed. Use when verifying implementation claims, investigating bugs,...

Use Android/Kotlin code as the source of truth and implement the equivalent feature in iOS/Swift. Understands the feature behavior, data structures, and logic from Android, then creates idiomatic...

Generates Jest or Pytest tests following Ben's testing standards. Use when creating tests, adding test coverage, writing unit tests, mocking dependencies, or when user mentions testing, test...

Advanced exploratory testing techniques with Session-Based Test Management (SBTM), RST heuristics, and test tours. Use when planning exploration sessions, investigating bugs, or discovering...

Guided feature development with codebase understanding and architecture focus. Use for implementing features systematically: explore → clarify → design → implement → test → review.

Privacy-first Chrome Manifest Version 3 extension architect - sidePanel design, MV3 service worker lifecycle, least-privilege permission audits, storage strategy, and cross-browser sidebar patterns.