Testing and QA: skills, plugins, subagents, slash commands and mcp servers

debugger VoltAgent Community subagent Diagnoses software failures, reads stack traces, and isolates root causes to fix elusive bugs. Helpful when logs alone do not explain a crash. Claude Code 13,459installs golang-troubleshooting samber skill Systematic root-cause debugging for Go code facing deadlocks, panics, and race conditions. Guides the agent to reproduce bugs before applying fixes. Claude Code CX Codex Cursor +1 39,800installs golang-cli samber skill A skill for building, extending, and reviewing Go CLI tools with guidance on commands, flags, configuration, signals, completion, and tests. Claude Code CX Codex Cursor +1 39,300installs golang-stretchr-testify samber skill Guides coding agents through writing Go tests with stretchr/testify. Helps configure assertions, mocks, and test suites cleanly. Claude Code CX Codex Cursor +1 39,200installs golang-grpc samber skill A Go gRPC skill covering .proto files, servers, clients, errors, TLS, testing, and streaming RPCs. Use it while building, reviewing, or debugging services. Claude Code CX Codex Cursor +1 39,100installs e2e-tests-studio mastra-ai skill A skill that automatically generates Playwright E2E tests when you modify playground components. Tests product behavior—data persistence, feature workflows, action side effects—not just UI states. Claude Code CX Codex Cursor +1 2,500installs smoke-test mastra-ai skill Scaffolds a Mastra project using create-mastra and runs smoke tests on Mastra Studio via Chrome MCP. Claude Code CX Codex Cursor +1 2,500installs deployment-pipeline-design Seth Hobson skill Designs staged CI/CD pipelines with approvals, security checks and rollout strategies. Use it for canary, blue-green and rollback planning. Claude Code CX Codex Cursor 13,758installs debugging-strategies Seth Hobson skill This skill gives an agent a step-by-step way to investigate bugs, crashes, and performance problems. Use it when a project behaves unexpectedly. Claude Code CX Codex Cursor 13,414installs golang-spf13-cobra samber skill Skill for spf13/cobra, the Go library for building command trees, validating arguments, parsing flags, and generating shell completion. Use it when building or extending a CLI application in Go. Claude Code CX Codex Cursor +1 37,000installs typescript-write metabase skill Skill for writing and editing TypeScript and JavaScript code to Metabase standards. Enforces strict typing without any and requires type checking before completion. Claude Code CX Codex Cursor +1 2,100installs langchain-architecture Seth Hobson skill This skill helps design LangChain 1.x and LangGraph applications with agents, memory, state, and tool calls. Use it for multi-step LLM workflows. Claude Code CX Codex Cursor 13,150installs gitlab-ci-patterns Seth Hobson skill This skill builds GitLab CI/CD pipelines with stages, caching, runners, and deployment patterns. Use it when your project needs automated tests, builds, or releases. Claude Code CX Codex Cursor 13,112installs php-pro https://github.com/Jeffallan skill Enforces PHP 8.3+ standards across Laravel and Symfony projects with strict typing, PHPStan level 9 checks, and automated Pest tests. Claude Code CX Codex Cursor +1 15,500installs llm-evaluation Seth Hobson skill A skill for evaluating LLM applications: automated metrics, human feedback, LLM-as-judge and benchmarking. Useful when comparing models or catching regressions before deploy. Claude Code CX Codex Cursor 12,755installs protocol-reverse-engineering Dávid Balatoni skill This skill helps inspect network traffic, map protocol structures, and write protocol documentation. Use it for proprietary protocol analysis or network debugging. Claude Code CX Codex Cursor 12,701installs cmux-testing manaflow-ai skill Skill for choosing verification scopes, adding tests, and validating Swift test targets in the cmux project. Decides what local and CI evidence a change needs. Claude Code CX Codex Cursor +1 4,900installs dogfood callstack skill Coordinates exploratory mobile app testing on iOS and Android via agent-device. Discovers UI bugs and workflow issues in runtime. Claude Code CX Codex Cursor +1 11,200installs wcag-audit-patterns Seth Hobson skill Audits web interfaces against WCAG 2.2 with automated checks and manual verification. Use it to find violations and build accessible patterns. Claude Code CX Codex Cursor 12,486installs python-pro VoltAgent Community subagent A subagent for type-safe Python code across web APIs, system utilities, and complex applications. Use it when async patterns and broad type coverage matter. Claude Code 11,689installs cmux-debugging manaflow-ai skill Skill for adding debug logging, diagnosing UI and runtime issues in cmux. Use when working with terminal rendering, tab lists, drag-and-drop, or testing across macOS versions. Claude Code CX Codex Cursor +1 4,700installs dfam-check earthtojake skill Measures mesh files against Design for Additive Manufacturing rules to evaluate printability before slicing or running CAD regeneration. Claude Code CX Codex Cursor +1 4,100installs argent-metro-debugger software-mansion skill A skill that connects a debugger to a JS runtime via CDP. Inspect React components, read console logs, and evaluate code live. Works with React Native (iOS, Android, Vega) and Chromium apps (Electron, browsers). Claude Code CX Codex Cursor +1 26,200installs argent-test-ui-flow software-mansion skill A skill for autonomous iOS and Android UI testing in Claude Code. Runs interact-screenshot-verify loops through argent MCP tools to check flows and screens. Claude Code CX Codex Cursor +1 26,200installs flutter-expert https://github.com/Jeffallan skill Skill for building cross-platform apps with Flutter 3+ and Dart. Covers widgets, state management via Riverpod or Bloc, GoRouter navigation, and performance optimization. Claude Code CX Codex Cursor +1 14,300installs python-pro Seth Hobson subagent A subagent for modern Python 3.12+ development, async code, testing, APIs, and performance work. Use it when a project needs deeper Python guidance. Claude Code CX Codex Cursor 11,689installs shellcheck-configuration Ryan Snodgrass skill This skill guides ShellCheck setup and use for shell script analysis. Use it when adding CI/CD linting, fixing warnings, or checking script portability. Claude Code CX Codex Cursor 11,533installs doublecheck official github skill Checks factual claims in AI output, looks for sources, and flags hallucination risk. Use it before relying on analysis, research summaries, or legal content. GitHub Copilot 4,300installs argent-screenshot-diff software-mansion skill Compares before and after screenshots to catch layout shifts, spacing, color and text rendering changes. Claude Code CX Codex Cursor +1 24,900installs data-quality-frameworks Seth Hobson skill This skill sets up data checks with Great Expectations, dbt tests, and data contracts. Use it for validation pipelines, CI/CD checks, and schema rules. Claude Code CX Codex Cursor 11,230installs dependency-upgrade Seth Hobson skill This skill plans major dependency upgrades, checks compatibility, and stages changes with tests. Use it for framework updates or library breaking changes. Claude Code CX Codex Cursor 11,079installs playwright-skill lackeyjb skill Write and run Playwright scripts directly in your IDE. Auto-detects dev servers, takes screenshots, checks responsive layouts, tests login flows, and validates web functionality. Claude Code CX Codex Cursor +1 6,900installs bats-testing-patterns Ryan Snodgrass skill This skill helps write and run shell-script tests with Bats. Use it for TDD, CI/CD checks, and error-case coverage across bash, sh, and dash. Claude Code CX Codex Cursor 11,000installs airflow-dag-patterns Seth Hobson skill This skill helps design Apache Airflow DAGs, connect tasks, and test pipelines. Use it for ETL workflows, batch jobs, and failed-run debugging. Claude Code CX Codex Cursor 11,000installs workflow-patterns Seth Hobson skill Guides tasks through Conductor's TDD workflow, from failing tests to phase checks and progress updates. Use it when following a task plan. Claude Code CX Codex Cursor 11,000installs paypal-integration Seth Hobson skill This skill covers PayPal checkout, subscriptions, refunds, and payment notifications. Use it when adding PayPal payments or recurring billing to an application. Claude Code CX Codex Cursor 10,900installs temporal-python-testing Seth Hobson skill Guidance for testing Temporal workflows in Python with pytest, time-skipping, activity mocks, and replay checks. Use it while building workflow tests or investigating failures. Claude Code CX Codex Cursor 10,900installs web3-testing Seth Hobson skill This skill guides Solidity contract testing with Hardhat and Foundry, from unit checks to mainnet forks. Use it for test suites and DeFi protocol validation. Claude Code CX Codex Cursor 10,800installs screen-reader-testing Seth Hobson skill This skill guides screen reader testing for web apps with VoiceOver, NVDA, and JAWS. Use it to debug ARIA, forms, navigation, and dynamic announcements. Claude Code CX Codex Cursor 10,700installs google-mobile-ads-validate official google skill Audits Google Mobile Ads SDK integrations in iOS, Android, and Unity projects. Run a full pre-launch check or ask it to inspect one specific area. Claude Code Gemini CLI CX Codex 3,300installs