Agent
Critically evaluates investigation results, checks path coverage, and validates failure points using Devil's Advocate method. Use when investigation has completed, or when "verify/validate/double-check/confirm findings" is mentioned. Focuses on verification and conclusion derivation.
Agent
Creates implementation-focused work plans from approved Design Docs. Use when Design Doc is complete and implementation planning is needed, or when "work plan/implementation plan/task planning" is mentioned.
Plugin Claude Code
Lightweight skills for users with existing workflows - coding best practices, testing principles, and design guidelines without recipe workflows or agents.
Skill Claude CodeCodex
Applies language-agnostic and backend technical decision criteria, anti-pattern detection, debugging, and quality gates. Use when reviewing general/backend implementation choices, code smells, failures, or implementation completeness.
Skill Claude CodeCodex
Language-agnostic coding principles for maintainability, readability, and quality. Use when implementing features, refactoring code, or reviewing code quality.
Skill Claude CodeCodex
Determines which of PRD, ADR, UI Spec, Design Doc, and Work Plan a change requires, and where each is stored. Use when deciding documentation scope, or when creating or reviewing a technical document.
Skill Claude CodeCodex
Records where resources outside the repository live (design source, design system, API schema, IaC source, secret store) and how design, implementation, and verification reach them. Use when work depends on an external resource, or when the user mentions design source, design system, API schema, IaC source, secret…
Skill Claude CodeCodex
Applies React/TypeScript-specific technical decision criteria, anti-pattern detection, debugging, and frontend quality gates. Use when reviewing components, hooks, browser behavior, or frontend implementation completeness.
Skill Claude CodeCodex
Implementation strategy selection framework. Use when planning implementation strategy, selecting development approach, or defining verification criteria.
Skill Claude CodeCodex
Integration and E2E test design principles, ROI calculation, test skeleton specification, and review criteria. Use when designing integration tests, E2E tests, or reviewing test quality.
Skill Claude CodeCodex
Clarifies inputs, outputs, success criteria, decisions, and unresolved conditions so downstream consumers can execute without guessing. Use when writing or revising LLM-facing prompts, handoffs, planning artifacts, reviews, reports, or generated instructions.
Skill Claude CodeCodex
Separates the outcome a change must produce from the requirements proposed to reach it, records what the user excluded, and bands cost from structure. Use when a requirement enters a workflow, before design begins.
Skill Claude CodeCodex
Implements React/TypeScript unit, integration, and browser E2E tests with the repository's configured runner, mocks, setup, and browser harness. Use when creating or completing frontend tests and generated test skeletons.
Skill Claude CodeCodex
Language-agnostic testing principles including TDD, test quality, coverage standards, and test design patterns. Use when writing tests, designing test strategies, or reviewing test quality.
Skill Claude CodeCodex
React/TypeScript frontend development rules including type safety, component design, state management, and error handling. Use when implementing React components, TypeScript code, or frontend features.
Plugin Claude Code
Skills + Subagents for React/TypeScript - Use skills for coding guidance, or run recipe workflows for full orchestrated agentic coding with specialized agents.
Skill Claude CodeCodex
Investigate problem, verify findings, and derive solutions.
Skill Claude CodeCodex
Adjust an already-implemented UI in-session with verification against the design source.
Skill Claude CodeCodex
Execute materialized frontend task files in autonomous execution mode.
Skill Claude CodeCodex
Execute from repository evidence through applicable UI Spec and optional ADR decisions to complete frontend Design Doc approval.
Skill Claude CodeCodex
Create frontend work plan from design document and obtain plan approval.
Skill Claude CodeCodex
Reviews completed frontend implementation for governing-source compliance, scope economy, repository quality, and security, then applies user-approved React corrections.
Skill Claude CodeCodex
Proposes repository-specific quality policy for implementation and review and, after confirmation, creates or updates docs/project-context/quality.yaml. Use when asked to create or update a repository quality profile.
Skill Claude CodeCodex
Execute tasks following appropriate rules with rule-advisor metacognition.