Testing & Quality

Browser automation and end-to-end testing MCP server by Microsoft. Enables Claude to interact with web pages, take screenshots, fill forms, click elements, and perform automated browser testing workflows.

Official browser automation + E2E testing MCP

Complete browser automation with Playwright. Auto-detects dev servers, writes clean test scripts to /tmp. Test pages, fill forms, take screenshots, check responsive design, validate UX, test login flows, check links, automate any browser task. Use when user wants to test websites, automate browser interactions, validate web functionality, or perform any browser-based testing.

Browser automation with auto-detected dev servers

Control a real Chrome browser to complete any task: fill forms, extract data, book flights.

AI-driven browser agent

Web browser capability for agents

Web browser capability for agents

Ultra-specialized Cypress end-to-end testing expert with comprehensive browser automation, component testing, API testing, and test automation strategy mastery. Focused on Cypress 13+ with advanced commands, custom plugins, CI/CD integration, and enterprise E2E testing patterns following 2025 best practices.

Cypress E2E testing

Expert in automating browser interactions using Puppeteer. Handles headless browsing, web scraping, and automated testing with Puppeteer. Use PROACTIVELY for browser automation tasks.

Puppeteer automation

Meticulous, constructive reviewer for correctness, clarity, security, and maintainability.

Automated code review agent

Automated code review for pull requests using multiple specialized agents with confidence-based scoring

Multi-agent PR review

Deep vulnerability scanning of your own code, run entirely inside your Claude Code session at a chosen effort tier, with every finding challenged before it is reported and the verification tally computed in code. Turns surviving findings into targeted patches, each verified by a panel of agents, that you apply when you choose. See the plugin README for the tiers, the report format, and the trust model.

Deep vulnerability scanning

Comprehensive PR review agents specializing in comments, tests, error handling, type design, code quality, and code simplification

PR review agents for comments, tests, errors

AI code review agent for GitHub and GitLab. View and resolve Greptile's PR review comments directly from Claude Code.

AI code review for GitHub and GitLab

Semantic code analysis MCP server providing intelligent code understanding, refactoring suggestions, and codebase navigation through language server protocol integration.

Semantic code analysis

AddressSanitizer detects memory errors during fuzzing. Use when fuzzing C/C++ code to find buffer overflows and use-after-free bugs.

Memory error detection while fuzzing

Add gcov code coverage instrumentation to C/C++ projects

gcov code coverage instrumentation

Ultra-specialized Jest testing framework expert with comprehensive unit testing, integration testing, mocking, and test-driven development mastery. Focused on Jest 29+ with advanced matchers, snapshot testing, coverage analysis, and enterprise JavaScript/TypeScript testing patterns following 2025 best practices.

Jest test patterns

Generate gcov coverage data for a code repository.

Coverage gap analysis

Comprehensive collection for writing tests, test automation, and test-driven development including unit tests, integration tests, and end-to-end testing strategies.

Automated test generation

Automated API endpoint testing with request generation, validation, and comprehensive test coverage

API contract and regression tests

Deep vulnerability scanning of your own code, run entirely inside your Claude Code session at a chosen effort tier, with every finding challenged before it is reported and the verification tally computed in code. Turns surviving findings into targeted patches, each verified by a panel of agents, that you apply when you choose. See the plugin README for the tiers, the report format, and the trust model.

Deep vulnerability scanning of your own code

Security review for Claude-generated code. Pattern-based warnings on edits, LLM-powered diff review on Stop, and an agentic commit reviewer that catches injection, XSS, SSRF, hardcoded secrets, and 25+ other vulnerability classes.

Security review for Claude-generated code

Executes Semgrep CLI scans for a specific language category and produces SARIF output. Spawned by the semgrep skill as a parallel worker — one agent per detected language.

Semgrep rule-based scanning

An MCP server that enables integration with SonarQube Server or Cloud for code quality and security.

SonarQube quality gates

Use this agent for comprehensive performance testing, profiling, and optimization recommendations. This agent specializes in measuring speed, identifying bottlenecks, and providing actionable optimization strategies for applications. Examples:\n\n<example>\nContext: Application speed testing

Benchmark and regression tracking

Comprehensive performance benchmarking, regression detection and performance validation

Load and performance test suites

MCP server for Google Lighthouse performance metrics

Lighthouse web performance audits