Claude-Code-Everything-You-Need-to-Know

Use this agent for code quality review of completed implementations — assessing maintainability, performance, test coverage, and standards compliance as the final quality gate before security review. For example: reviewing a finished frontend/backend feature and producing prioritized findings (Blocker/High-Priority/Medium/Nitpick) with actionable fixes.

Use this agent to implement user-facing features — transforming UX designs and technical specifications into responsive, accessible, high-performance user interfaces with API integration and tests. Delegate frontend build work such as UI components, styling, client-side state and data handling, or web performance optimization.

Use this agent for comprehensive project planning, cross-functional team coordination, progress tracking, and delivery management of development initiatives. For example: planning a 6-week user authentication project across a UX designer, backend developer, and QA tester, or regaining control of a project facing delays and scope creep.

Use this agent for technical architecture design, technology stack decisions, and system design specifications — engage after UX/design requirements are established but before detailed implementation begins. For example: planning the architecture for an event management dashboard from completed UX designs, choosing the stack and patterns for a new microservices project, or recommending scaling strategies for performance issues under load.

Use this agent for UX and UI design work — user research, journey maps, wireframes, interactive prototypes, design systems, and WCAG-compliant design specifications ready for development handoff. Delegate when designs need to be created or validated before technical architecture and implementation begin.

Apply the Five Whys root cause analysis technique to investigate an issue

Create a branch, split changes into logical commits, and open a pull request

Run a multi-perspective PR review (product, dev, QA, security, DevOps, UX) and post it to GitHub

Development practices and TDD workflow to follow before starting a feature

LLM unit testing best practices checklist for testing internal logic, not API endpoints

Manage project todos in todos.md file

User Experience Designer & UI Specialist persona for design-focused tasks

Audit a CLAUDE.md file for the patterns that actually degrade Claude Code's output — vagueness, unnamed files, stale facts, and bloat. Use when asked to review, audit, improve, shrink, or fix a CLAUDE.md, and when a project's results feel inconsistent or Claude keeps rediscovering the same context.