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Skill Claude CodeCodex
Guides clean, scalable system architecture during the build phase. Use when designing modules, defining boundaries, structuring projects, managing dependencies, or preventing tight coupling and brittleness as systems grow.
Skill Claude CodeCodex
Fixes flaky tests by replacing arbitrary timeouts with condition polling. Use when tests fail intermittently, have setTimeout delays, or involve async operations that need proper wait conditions.
Skill Claude CodeCodex
Enforces precise, minimal design for dashboards and admin interfaces. Use when building SaaS UIs, data-heavy interfaces, or any product needing Jony Ive-level craft.
Skill Claude CodeCodex
Standards for self-documenting code and minimal comments. Use when auditing inline documentation or deciding when comments add value vs clutter.
Skill Claude CodeCodex
Creates task-oriented technical documentation with progressive disclosure. Use when writing READMEs, API docs, architecture docs, or markdown documentation.
Skill Claude CodeCodex
Executes implementation plans with smart task grouping. Groups related tasks to share context, parallelizes across independent subsystems.
Skill Claude CodeCodex
Diagnose and fix tests that pass in isolation but fail when run concurrently. Covers shared state isolation and resource conflicts. References condition-based-waiting for timing issues.
Skill Claude CodeCodex
Prevents silent failures and context loss in error handling. Use when writing try-catch blocks, designing error propagation, reviewing catch blocks, or implementing Result patterns.
Skill Claude CodeCodex
Guides database architecture decisions for PostgreSQL, DuckDB, Parquet, and PGVector. Use when designing schemas, choosing storage strategies, optimizing queries, tuning maintenance, configuring vector search, or diagnosing performance issues across OLTP, OLAP, and similarity search workloads.
Skill Claude CodeCodex
Safe code migrations with backward compatibility and reversibility. Use when upgrading dependencies, changing database schemas, API versioning, or transitioning between technologies.
Skill Claude CodeCodex
Measure-first performance optimization that balances gains against complexity. Use when addressing slow code, profiling issues, or evaluating optimization trade-offs.
Skill Claude CodeCodex
Review a completed session to extract actionable improvements. Identifies DX friction, documentation gaps, architectural confusion, anti-patterns, process failures, and skill/config improvements. Uses progressive disclosure for targeted investigation types.
Skill Claude CodeCodex
Detect and run project linters, formatters, and type checkers before committing or claiming completion. Auto-detects tools from project config files.
Skill Claude CodeCodex
Analyzes logs efficiently through targeted search and iterative refinement. Use when investigating errors, debugging incidents, or analyzing patterns in application logs.
Skill Claude CodeCodex
Improves code structure while preserving behavior through test verification. Use when cleaning up code, reducing duplication, simplifying complexity, or reorganizing modules.
Skill Claude CodeCodex
Produces executive-quality strategic documents in The Economist/HBR style. Use when writing strategy memos, market analysis, business cases, customer research reports, or any document for Product, Design, and Business leaders. Customer-led, evidence-based, narrative-driven.
Skill Claude CodeCodex
Four-phase debugging framework that finds root causes before proposing fixes. Use when investigating bugs, errors, unexpected behavior, failed tests, or when previous fixes haven't worked.
Skill Claude CodeCodex
Run verification commands before claiming work is complete or fixed. Use before asserting any task is done, bug is fixed, tests pass, or feature works.
Skill Claude CodeCodex
Creates professional Mermaid diagrams with semantic styling and visual hierarchy. Use when creating flowcharts, sequence diagrams, state machines, class diagrams, or architecture visualizations.
Skill Claude CodeCodex
Writing style and tone guide for human-sounding content. Use when writing documentation, READMEs, commit messages, PR descriptions, blog posts, or any user-facing content.
Skill Claude CodeCodex
Create implementation plans with tasks grouped by subsystem. Related tasks share agent context; groups parallelize across subsystems.
Skill Claude CodeCodex
Writes behavior-focused tests using Testing Trophy model with real dependencies. Use when writing tests, choosing test types, or avoiding anti-patterns like testing mocks.
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