Skill Claude CodeCodex
Guides stable API and interface design. Use when designing APIs, module boundaries, or any public interface. Use when creating REST or GraphQL endpoints, defining type contracts between modules, or establishing boundaries between frontend and backend.
Skill Claude CodeCodex
Conducts multi-axis code review. Use before merging any change. Use when reviewing code written by yourself, another agent, or a human. Use when you need to assess code quality across multiple dimensions before it enters the main branch.
Skill Claude CodeCodex
Simplifies code for clarity. Use when refactoring code for clarity without changing behavior. Use when code works but is harder to read, maintain, or extend than it should be. Use when reviewing code that has accumulated unnecessary complexity.
Skill Claude CodeCodex
Optimizes agent context setup. Use when starting a new session, when agent output quality degrades, when switching between tasks, or when you need to configure rules files and context for a project.
Skill Claude CodeCodex
Guides systematic root-cause debugging. Use when tests fail, builds break, behavior doesn't match expectations, or you encounter any unexpected error. Use when you need a systematic approach to finding and fixing the root cause rather than guessing.
Skill Claude CodeCodex
Subjects every non-trivial decision to a fresh-context adversarial review before it stands. Use when correctness matters more than speed, when working in unfamiliar code, when stakes are high (production, security-sensitive logic, irreversible operations), or any time a confident output would be cheaper to verify now…
Skill Claude CodeCodex
Builds production-quality, accessible, responsive user-facing UIs. Use when building or modifying interfaces and pages, creating components, implementing layouts, meeting WCAG accessibility requirements, managing state, or when the output needs to look and feel production-quality rather than AI-generated.
Skill Claude CodeCodex
Structures git workflow practices. Use when making any code change. Use when committing, branching, resolving conflicts, or when you need to organize work across multiple parallel streams. Use when cutting a release, choosing a semantic version bump, tagging, or writing a changelog.
Skill Claude CodeCodex
Delivers changes incrementally. Use when implementing any feature or change that touches more than one file. Use when you're about to write a large amount of code at once, or when a task feels too big to land in one step.
Skill Claude CodeCodex
Breaks work into ordered tasks. Use when you have a spec or clear requirements and need to break work into implementable tasks. Use when a task feels too large to start, when you need to estimate scope, or when parallel work is possible.
Skill Claude CodeCodex
Hardens code against vulnerabilities. Use when handling user input, authentication, data storage, or external integrations. Use when building any feature that accepts untrusted data, manages user sessions, or interacts with third-party services.
Skill Claude CodeCodex
Grounds every implementation decision in official documentation. Use when you want authoritative, source-cited code free from outdated patterns. Use when building with any framework or library where correctness matters.
Skill Claude CodeCodex
Creates specs before coding. Use when starting a new project, feature, or significant change and no specification exists yet. Use when requirements are unclear, ambiguous, or only exist as a vague idea.
Skill Claude CodeCodex
Discovers and invokes agent skills. Use when starting a session or when you need to discover which skill applies to the current task. This is the meta-skill that governs how all other skills are discovered and invoked.
Skill Claude CodeCodex
A Chinese-language tutoring process for helping users understand study materials, practise concepts, and track learning progress.
Skill Claude CodeCodex
A set of rules for an agent working with an Obsidian vault, a folder of linked Markdown notes. It defines where materials, notes, exercises, templates, and progress files belong and how they may be edited.
Skill Claude CodeCodex
A writing-style calibration that changes responses to match the voice of the character 昔涟 when certain conversation situations are detected. It supplies tone rules and example responses.
Skill Claude CodeCodex
A planning guide for Cyrene’s Plan Mode, used before code or file changes are made. It helps turn a broad request into an agreed implementation plan based on the project’s actual code and constraints.
Skill Claude CodeCodex
A Work-mode rulebook for organizing projects that create, arrange, or deliver several files.
Skill Claude CodeCodex
A Windows workflow for creating, editing, and formatting professional Word documents in DOCX format, including structured layouts and templates.
Skill Claude CodeCodex
Structured self-debugging workflow for AI agent failures using capture, diagnosis, contained recovery, and introspection reports.
Skill Claude CodeCodex
Regression testing strategies for AI-assisted development. Sandbox-mode API testing without database dependencies, automated bug-check workflows, and patterns to catch AI blind spots where the same model writes and reviews code.
Skill Claude CodeCodex
Create CodeTour .tour files — persona-targeted, step-by-step walkthroughs with real file and line anchors. Use for onboarding tours, architecture walkthroughs, PR tours, RCA tours, and structured "explain how this works" requests.
Skill Claude CodeCodex
Analyze an unfamiliar codebase and generate a structured onboarding guide with architecture map, key entry points, conventions, and a starter CLAUDE.md. Use when joining a new project or setting up Claude Code for the first time in a repo.