Testing & Debugging: Claude Code Skills & MCP Servers
systematic-debugging
Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes
test-driven-development
Use when implementing any feature or bugfix, before writing implementation code
skill-creator
Create new skills, modify and improve existing skills, and measure skill performance. Use when users want to create a skill from scratch, edit, or optimize an existing skill, run evals to test a skill, benchmark skill performance with variance analysis, or optimize a skill's description for better triggering accuracy.
test-value
Improve test value and feedback cost when auditing slow, flaky, redundant or brittle tests; choosing tests during implementation; or reviewing test changes before a commit or PR. Keep ordinary implementation and pre-commit use scoped to the affected behavior, not a repository-wide audit.
analytical-method-validation
Plans, executes, and documents validation, verification, and transfer of analytical procedures under the governing framework - ICH Q2(R2) and Q14, USP <1220>/<1225>/<1226>, ICH M10 bioanalytical, CLSI EP, or ISO/IEC 17025. Use for HPLC, LC-MS/MS, GC, CE, ICP-MS, dissolution, qNMR, qPCR, NIR, and ligand binding or cell-based assays whenever the question is whether a procedure is fit for its intende
42crunch-api-security-testing
Automate API security directly in Claude Code with 42Crunch - automatically audit OpenAPI specs, detect vulnerabilities aligned with OWASP API Security risks (including BOLA/BFLA), and apply AI-powered fixes. Designed for AI-assisted development workflows, it provides continuous guardrails through an audit->scan->remediate->validate loop, ensuring APIs meet enterprise security standards before dep
full-stack-orchestration
End-to-end feature orchestration with testing, security, performance, and deployment
unit-testing
Unit and integration test automation for Python and JavaScript with debugging support
tdd-workflows
Test-driven development methodology with red-green-refactor cycles and code review
screen-reader-testing
Test web applications with screen readers including VoiceOver, NVDA, and JAWS. Use when validating screen reader compatibility, debugging accessibility issues, or ensuring assistive technology support.
parallel-debugging
Debug complex issues using competing hypotheses with parallel investigation, evidence collection, and root cause arbitration. Use this skill when debugging bugs with multiple potential causes, performing root cause analysis, or organizing parallel investigation workflows.
temporal-python-testing
Test Temporal workflows with pytest, time-skipping, and mocking strategies. Covers unit testing, integration testing, replay testing, and local development setup. Use when implementing Temporal workflow tests or debugging test failures.
web3-testing
Test smart contracts comprehensively using Hardhat and Foundry with unit tests, integration tests, and mainnet forking. Use when testing Solidity contracts, setting up blockchain test suites, or validating DeFi protocols.
playwright-mcp
Playwright Tools for MCP
agent-evaluation
Testing and benchmarking LLM agents including behavioral testing, capability assessment, reliability metrics, and production monitoring—where even top agents achieve less than 50% on real-world benchmarks Use when: agent testing, agent evaluation, benchmark agents, agent reliability, test agent.
behavioral-modes
AI operational modes (brainstorm, implement, debug, review, teach, ship, orchestrate). Use to adapt behavior based on task type.
Keploy
End-to-end API testing — generate and run tests from OpenAPI, curl, Postman, or real user traffic.
SeleniumBase MCP
Stealthy browser automation, testing, and web-scraping via CDP Mode.
mobile-mcp
MCP server for iOS and Android Mobile Development, Automation and Testing
agent-device
MCP server for mobile app automation: verify, control, and debug iOS, Android, TV, and desktop apps
agent-device
Let AI agents inspect, control, and debug real iOS, Android, desktop, and TV apps
mockserver
Mock, record/replay, verify and chaos-test any HTTP, REST, gRPC or LLM dependency over MCP.
testkube-mcp
MCP server for Testkube - Manage test workflows, executions, and artifacts via AI assistants
WebPerf Snippets
Measure Core Web Vitals and debug web performance with 56 snippets in a headless Chromium