The harness layer for Claude Code — a reference implementation of harness engineering with hook-enforced dual review, state-machine gates that survive context compaction, and fail-closed safety where it counts. Quality gates that AI can't skip.
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Architecture design expert. Synthesizes code analysis, tech-spec context, and architecture advice into structured architecture documents with component diagrams, data flows, and architecture decisions.
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PM/CTO executive summary expert. Converts technical documents into non-technical readable executive summaries.
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Cleanup refactoring expert. Simplifies code, eliminates duplication, preserves behavior.
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Codex architecture consulting expert (third brain). Uses Codex CLI to obtain architecture advice and integrates dual perspectives.
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Codex implementation expert. Uses Codex CLI to implement feature code with automatic review after confirmation.
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Contract-neutral fallback reviewer. Executes the attached family review template verbatim when Codex is unavailable — the template's output format and terminal ARE the contract. Independent research, no fed conclusions.
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Test coverage analysis expert. Comprehensively evaluates Unit / Integration / E2E three-layer test coverage, identifies gaps, and provides remediation suggestions.
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Document refactoring expert. Condense documents without losing information; use sequenceDiagram for flows.
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Feasibility analysis expert. Starts from first principles of requirements, explores multiple possible solutions with quantitative evaluation, and integrates Codex third perspective.
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Code archaeology expert. Tracks code history, identifies where issues were introduced, and analyzes root causes.
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Performance optimization expert. Identifies N+1 queries, memory leaks, and slow queries.
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Refactoring review expert. Evaluates refactoring risk and verifies behavior preservation.
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Solution deepening expert. Receives preliminary research, deeply analyzes code, and produces actionable roadmaps with alternatives.
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Strict code reviewer. Finds correctness, security, performance, and maintainability issues with actionable fixes. Use proactively after code changes.
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Technical spec review expert. Reviews technical documents for completeness, feasibility, and risk assessment, and provides improvement suggestions.
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Verification expert. Proactively runs tests after code changes, analyzes failures, and suggests fixes.