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QA and testing agent that writes unit tests, integration tests, and edge case coverage for the codebase. Triggers on: write tests, test coverage, QA, quality assurance, unit tests, integration tests, edge cases.

Use this skill when the user asks to explain, walk through, or understand a file, function, class, or code concept. Covers high-level summaries, mental models, and pointing out non-obvious behavior. Do NOT use for debugging, refactoring, or writing new code.

Thinking guidelines to reduce common coding mistakes. Use when writing, reviewing, or refactoring code to avoid overcomplication, make surgical changes, surface assumptions, and define verifiable success criteria.

Audits an unfamiliar codebase, mapping its architecture, user-facing features, maturity, and risks. This skill is used to inspect repositories, summarize the tech stack, explain structure, list implemented features, assess maturity, or prepare a coding brief from an existing project.

Use this skill when setting up or configuring code quality tools (formatters, linters, type checkers, dependency scanners) for a repository, or when adding visual accessibility automation or security baseline scanning. Do not use it for general coding or when tools are already configured.

Systematic development guardrails that enforce disciplined, context-aware coding and product-aware thinking. Apply this skill before any technical task, such as coding, debugging, refactoring, architecture, automation, or frontend/backend integration, covering technologies like Supabase, React, and AI.

The "audit" mode identifies drift (claimed facts no longer matching code), leaked secrets, duplicates, instruction-budget bloat, and prescriptive-vs-descriptive imbalance across all CLAUDE.md files in your projects.

Debug, test, and troubleshoot MCP servers. Verify tool schemas, test tool calls, and diagnose connection failures. Zero dependencies.

Runs severity-ranked engineering audits and executes approval-gated refactors to raise prototype code to production quality.

Builds concise repository context bundles covering structure, entry points, dependencies, tests, conventions, and risks.

This skill generates and decodes QR codes, allowing you to create scannable codes from text/URLs and extract information from QR code images. It utilizes a remote MCP service for all QR code operations.

Hiring skill for startups. Use when user needs job descriptions, interview scorecards, structured interview questions, or offer letter templates. Triggers on "job description", "hiring", "interview questions", "scorecard", "offer letter", "JD", or /hire commands.