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

typescript-pro VoltAgent Community subagent This subagent handles advanced TypeScript patterns, complex generics, and type safety across frontend and backend code. Use it for type-heavy project work. Claude Code 9,602installs eval-driven-dev official github skill Builds end-to-end evaluations for Python applications that call an LLM, from criteria and test data to scored runs. Use it for QA, benchmarks, and investigating wrong responses. GitHub Copilot 3,900installs multi-reviewer-patterns Seth Hobson skill This skill coordinates parallel reviews across code-quality dimensions and merges the results into one report. Use it when a change needs several review angles. Claude Code CX Codex Cursor 9,800installs typescript-pro Seth Hobson subagent A subagent for advanced TypeScript types, strict checking, and architecture work. Use it when generics, inference, or decorators need careful design. Claude Code CX Codex Cursor 9,602installs autoresearch official luiscantero skill Runs an iterative code experiment loop: changes the project, measures a defined result, and keeps improvements. Use it when success can be measured. GitHub Copilot 3,400installs mobile-developer VoltAgent Community subagent A subagent for React Native and Flutter apps that covers native features, offline-first architecture, and platform-aware performance work. Claude Code 7,777installs error-detective VoltAgent Community subagent A Claude subagent that digs into failures: correlates errors across services, traces cascades and suggests how to prevent them. Claude Code 7,557installs evaluation-methodology Seth Hobson skill Reference guide for the PluginEval quality framework. Explains scoring formulas, anti-pattern penalties, and multi-layer checks for agent skills. Claude Code CX Codex Cursor 7,200installs secops-detection-engineering official Google LLC skill This skill authors, validates, tests, and deploys YARA-L 2.0 rules in Google SecOps. Use it to examine detection coverage gaps. Claude Code Gemini CLI CX Codex 1,900installs javascript-pro VoltAgent Community subagent This subagent reviews and changes JavaScript for browser and Node.js projects. Use it for work involving async code, performance, or modern language features. Claude Code 4,974installs spring-boot-testing official github skill Helps choose a testing approach for Spring Boot 4, from a focused slice to a full application test. Use it when deciding which annotations and tools fit a test. GitHub Copilot 2,000installs github-actions-efficiency official github skill This skill reviews GitHub Actions workflows, finds wasted CI minutes, and suggests cost-focused fixes. Use it when tuning workflow triggers, caching, or job layout. GitHub Copilot 2,000installs unit-test-vue-pinia official github skill Writes and reviews unit tests for Vue 3, TypeScript, Vitest and Pinia code. Useful when your tests reach into component internals instead of behavior. GitHub Copilot 1,800installs reviewing-oracle-to-postgres-migration official github skill Reviews Oracle-to-PostgreSQL migration risks and checks whether migration artifacts and integration tests cover the relevant behavior changes. GitHub Copilot 1,800installs planning-oracle-to-postgres-migration-integration-testing official github skill This skill inspects a single .NET project and writes an integration test plan for an Oracle-to-PostgreSQL migration. Use it to map database touchpoints to tests. GitHub Copilot 1,800installs creating-oracle-to-postgres-migration-integration-tests official github skill Creates Oracle integration tests for .NET data access artifacts before a PostgreSQL migration, preserving expected database behavior as the test baseline. GitHub Copilot 1,800installs creating-oracle-to-postgres-migration-bug-report official github skill Creates structured bug reports for Oracle-to-PostgreSQL migration defects. Use it when a database behaviour difference needs a reproducible report with a cause and validation plan. GitHub Copilot 1,800installs scaffolding-oracle-to-postgres-migration-test-project official github skill Creates an empty xUnit integration test project for Oracle in a .NET solution. Use it in Phase 3 before writing Oracle baseline integration tests. GitHub Copilot 1,700installs quality-playbook official Andrew Stellman skill This skill explores a codebase, derives requirements, reviews implementation, and audits it against specifications. Use it when you need findings tied to tests and verified TDD patches. GitHub Copilot 1,600installs react19-test-patterns official github skill A migration reference for updating test files to work with React 19. Use it when replacing removed test utilities or revising StrictMode call-count assertions. GitHub Copilot 1,200installs backend-developer VoltAgent Community subagent Subagent for building backend APIs and microservices in Node.js, Python, and Go. Helps implement relational schemas, caching, and OWASP security rules. Claude Code 2,724installs ai-debt-detector Adit Jain skill This skill audits AI-generated code for missed failure paths, orphaned resources, fake dependencies, and architecture drift before a merge. Claude Code CX Codex Cursor 2,900installs arize-experiment official arize skill Runs Arize experiments with the ax CLI to benchmark models and export evaluation scores across dataset versions. GitHub Copilot 1,100installs arize-evaluator official arize skill Runs LLM-as-judge workflows in Arize for spans and experiments, with evaluator management, task control, column mapping, and continuous monitoring. GitHub Copilot 1,100installs arize-dataset official arize skill This skill manages Arize datasets and examples through ax. Use it for test sets, evaluation examples, and dataset exports. GitHub Copilot 1,100installs phoenix-evals official [email protected] skill Build and run evaluators for AI and LLM applications with Phoenix. Use it to investigate failures, evaluate RAG systems, and check model output. GitHub Copilot 1,000installs phoenix-cli official arize-ai skill A GitHub Copilot skill that drives the Phoenix CLI to pull traces, spans and sessions, then turns what it finds into a failure taxonomy for your LLM app. GitHub Copilot 1,000installs quantized-export Seth Hobson skill Exports promoted checkpoints and LoRA adapters as FP8, AWQ, GGUF, or merged safetensors. Use it before deploying a model. Claude Code CX Codex Cursor 2,600installs eval-harness-first Seth Hobson skill Builds the evaluation harness before fine-tuning with goldens, graders, judge calibration, and a base-model baseline. Useful for tracking regressions. Claude Code CX Codex Cursor 2,600installs checkpoint-promotion Seth Hobson skill Gates a trained checkpoint before release by checking data quality, capability drift, forgetting, and paired results against the base model. Claude Code CX Codex Cursor 2,600installs penetration-tester VoltAgent Community subagent Runs authorized security tests, validates vulnerabilities and reports remediation steps. Use it to assess systems within an agreed scope. Claude Code 2,407installs pptx-quality-gates kimtth skill Checks and repairs editable PPTX decks for geometry, accessibility, native objects, source lineage, and OOXML package integrity before delivery. Claude Code CX Codex Cursor 2,500installs python-pypi-package-builder official github skill This skill guides Python package creation, testing, versioning, and PyPI publishing. Use it for libraries, SDKs, CLI tools, and framework plugins. GitHub Copilot 943installs salesforce-apex-quality official github skill Checks Apex for governor-limit risks, security gaps, and missing tests. Use it when GitHub Copilot reviews or generates Salesforce classes, triggers, and test code. GitHub Copilot 884installs salesforce-flow-design official github skill Reviews Salesforce Flow architecture, type selection, bulk safety, and fault handling. Use it before designing, reviewing, or activating a Flow. GitHub Copilot 839installs php-pro VoltAgent Community subagent Claude Code subagent for PHP 8.3+, Laravel, and Symfony projects requiring strict typing, PHPStan level 9 checks, and async patterns. Claude Code 2,019installs react18-dep-compatibility official github skill Checks minimum dependency versions for React 18.3.1 and React 19. Use it during React upgrades and when resolving peer dependency conflicts. GitHub Copilot 764installs react18-batching-patterns official github skill Diagnoses and fixes React 18 automatic batching bugs in class components. Useful when upgrading from React 17 breaks state assertions or async flows. GitHub Copilot 754installs react18-enzyme-to-rtl official github skill Provides Enzyme to React Testing Library migration patterns for React 18 upgrades. Useful when rewriting shallow renders, mount calls, and state assertions into user behavior checks. GitHub Copilot 739installs golang-pro Seth Hobson subagent This subagent helps design Go services, inspect concurrent code, and profile performance. Use it when a task calls for tested code and careful goroutine handling. Claude Code CX Codex Cursor 1,911installs