Testing Claude Skills
3 546 testing skills from 425 authors. They run test suites, check accessibility and catch what broke. Half of them fit into 1 796 tokens or less — that is what one costs your context window when the agent loads it. 405 ship runnable scripts rather than instructions alone. 2 of them cannot work without an MCP server, most often rube. We also found 403 copies of these same skills sitting in other people's repositories — counted once here, not 403 times.
3 546 unique 425 authors 2 161 updated this month 331 from vendors
Cross-platform desktop and application screenshot capture for visual testing, UI verification, and automated visual comparison across macOS, Linux, and Windows.
Integrating screenshot-based visual testing into CI pipelines with baseline management, review workflows, and cross-platform rendering comparison.
Automated screenshot comparison testing with configurable thresholds, anti-aliasing tolerance, and responsive viewport visual validation.
Comprehensive SDET interview preparation covering coding challenges, system design for testing, automation framework design, CI/CD pipeline questions, testing strategy discussions, and behavioral interview patterns for QA engineering roles.
Search feature testing including relevance scoring, autocomplete, typo tolerance, faceted search, pagination, and search analytics verification.
Generate test data from the schemas you already have. Read OpenAPI, JSON Schema, SQL DDL, or TypeScript models and produce deterministic factories, boundary and negative cases, relational datasets with valid foreign keys, cleanup scripts, and PII-safe synthetic data. Production records never leave the machine.
Expert-level Selenide UI testing skill for Java applications. Covers concise fluent API, automatic waits, smart selectors, collections, Page Objects, and integration with JUnit 5 and Gradle/Maven builds.
Parallel test execution with Selenium Grid including hub/node configuration, Docker-based grid, cross-browser testing, and session management.
End-to-end web testing skill using Selenium WebDriver with Java, covering WebDriver setup, page objects, explicit waits, and TestNG/JUnit integration.
Static application security testing using Semgrep for finding vulnerabilities, code smells, and enforcing security policies across codebases.
Integration testing with Sentry for error tracking, performance monitoring, and release health verification in production environments.
Java BDD testing with Serenity BDD framework using the Screenplay pattern, Cucumber integration, step libraries, comprehensive reporting, and living documentation generation.
Testing serverless functions including Lambda, Cloud Functions, and Edge Functions with local emulation, cold start testing, and timeout handling.
Teach agents to run session-based exploratory testing with charters, time boxes, tours, note-taking, debriefs, and coverage tracking.
Testing skill for shadcn/ui and Radix UI component libraries covering accessible component testing, dialog and popover testing, form validation testing, data table testing, command palette testing, and theme switching verification.
Testing Service Level Agreements and Objectives including availability targets, latency percentiles, error budgets, and automated SLO compliance reporting.
Building effective smoke test suites for deployment verification including critical path coverage, health endpoints, and rapid feedback testing.
Snapshot testing strategies for UI components, API responses, and data structures with update workflows, review patterns, and anti-pattern avoidance.
SOAP web service testing including WSDL validation, XML schema testing, WS-Security, and SOAP fault handling verification.
Testing SOC 2 compliance controls including security monitoring, change management, access reviews, and incident response procedures.
Testing implementations against formal specifications including RFC compliance, protocol adherence, and standards conformance verification.
C# .NET BDD testing with SpecFlow using Gherkin feature files, step bindings, hooks, dependency injection, Selenium integration, and living documentation with SpecFlow+ LivingDoc.
Spring Boot application testing with @SpringBootTest, MockMvc, @DataJpaTest, Testcontainers, and Spring Security testing patterns.
Comprehensive SQL injection testing patterns including blind SQLi, time-based, union-based, and parameterized query validation techniques.
Testing Server-Sent Events implementations including event stream validation, reconnection behavior, event ID tracking, and EventSource client testing.
SSL/TLS configuration testing including certificate validation, cipher suite analysis, protocol version checks, and HSTS verification.
Generate comprehensive test cases from state machine models covering all states, transitions, guard conditions, and invalid transition attempts for workflow-heavy features
Testing UI components through Storybook stories with play functions, interaction testing, accessibility checks, and visual regression via Chromatic.
Streaming API testing skill covering Server-Sent Events testing, chunked transfer encoding, gRPC streaming, real-time data validation, backpressure testing, connection resilience, and AI/LLM streaming response testing.
Stress testing methodologies for finding breaking points, resource exhaustion thresholds, and degradation patterns under extreme load conditions.
Testing patterns for Supabase applications covering auth flow testing, Row Level Security policy testing, realtime subscription testing, and edge function testing
Test Node.js HTTP APIs in-process with SuperTest — request(app) without binding a port, chained .expect assertions, auth headers, JSON body validation, and Jest integration with proper async/await patterns.
Svelte component testing with @testing-library/svelte, vitest, component rendering, event simulation, store testing, and SvelteKit testing.
Swift testing with XCTest, Swift Testing framework, async/await testing, SwiftUI preview testing, and performance measurement.
Synthetic monitoring test creation for uptime checking, user journey simulation, API health verification, and multi-region availability testing.
Testing patterns for TanStack Query (React Query) covering query hook testing, mutation testing, cache behavior testing, and optimistic update verification.
Practice strict red-green-refactor test-driven development — write one failing test first, make it pass with the minimum code, then refactor under green, with worked cycles in Jest and pytest, AAA structure, and behavior-based test naming.
Test-Driven Development mastery with red-green-refactor cycle, outside-in TDD, test-first design, and incremental development patterns.
Infrastructure-as-Code testing with Terratest, terraform validate, plan verification, and drift detection for Terraform configurations.
Designing scalable test architectures including test pyramid, diamond, trophy, and honeycomb patterns with framework-agnostic implementation.
Automatically generate comprehensive test cases from user stories and acceptance criteria using BDD patterns, equivalence partitioning, and risk-based prioritization
Identify untested code paths, uncovered branches, and missing test scenarios using coverage analysis, risk mapping, and change-based coverage tracking
Optimizing test coverage beyond line coverage including branch coverage, mutation score, path coverage, and identifying meaningful coverage gaps.
Anonymizing production data for testing while maintaining referential integrity, data distributions, and edge case representation.
Build reusable test data factories with realistic fake data generation, relationship handling, and deterministic seeding for reproducible tests.
Test data generation and management skill covering Faker.js, factory patterns, builders, database seeding, and test data strategies for reliable test suites.
Quantify and prioritize test technical debt by analyzing coverage gaps, flaky test ratios, outdated assertions, and missing test categories across codebases.
Generating human-readable test documentation from test code including test catalogs, coverage reports, and living documentation websites.