2,373 free skills
Skills for writing and running tests — framework-specific patterns for Jest, Vitest, pytest, Go testing, RSpec, JUnit, Playwright, Cypress, and more.
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15 tools across six categories
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test-framework-migration-skill
lambdatest/agent-skills
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e2e
alleneubank/claude-code
Use when running e2e tests, debugging test failures, or fixing flaky tests. Covers failure taxonomy, fix rules, and workflow. Never changes source code logic or API without spec backing.
qa-expert
personamanagmentlayer/pcl
Expert-level quality assurance, testing strategies, automation, and QA processes
pinia-v3
secondsky/claude-skills
Pinia v3 Vue state management with defineStore, getters, actions. Use for Vue 3 stores, Nuxt SSR, Vuex migration, or encountering store composition, hydration, testing errors.
write-python-tests
liblaf/skills
Write or refresh Python test coverage. Use when Codex needs to add coverage, replace stale tests, prefer executable doctest examples in public docstrings, or lock down Python behavior in repos that use `uv`, `pytest`, `nox`, and `mise`.
trigger-dev-tasks
triggerdotdev/trigger.dev
Use this skill when writing, designing, or optimizing Trigger.dev background tasks and workflows. This includes creating reliable async tasks, implementing AI workflows, setting up scheduled jobs, structuring complex task hierarchies with subtasks, configuring build extensions for tools like ffmpeg or Puppeteer/Playwright, and handling task schemas with Zod validation.
segmentation-analysis
nimrodfisher/data-analytics-skills
Customer/user segmentation with actionable insights. Use when identifying distinct customer groups, analyzing segment-specific behavior, profiling high-value segments, or testing segmentation hypotheses.
414-frameworks-quarkus-kafka
jabrena/plinth
Use when you need Kafka messaging in Quarkus with SmallRye Reactive Messaging — including channel/topic design, build-time Jackson serialization, typed @Channel/@Incoming, ack/failure strategies, retries/DLQ, idempotency, Dev Services, and Testcontainers integration tests. This should trigger for requests such as Add Kafka in Quarkus; Review Reactive Messaging consumers; Improve failure handling for Quarkus Kafka; Configure Quarkus Reactive Messaging Kafka channels; Add Quarkus Kafka failure strategy or DLQ handling. Part of Plinth Toolkit
penetration-tester
404kidwiz/claude-supercode-skills
Expert in ethical hacking, vulnerability assessment, and offensive security testing (Web/Network/Cloud).
514-frameworks-micronaut-kafka
jabrena/plinth
Use when you need Kafka messaging in Micronaut — including @KafkaClient and @KafkaListener design, @Serdeable serialization, topic/partition strategy, TestPropertyProvider integration tests, retries and dead-letter processing, and error handling. This should trigger for requests such as Add Kafka in Micronaut; Review Micronaut Kafka listeners; Improve retry and failure handling for Micronaut Kafka; Configure Micronaut Kafka clients listeners or SerDes; Add Micronaut Kafka retry or dead-letter handling. Part of Plinth Toolkit
debug-like-expert
glittercowboy/taches-cc-resources
Deep analysis debugging mode for complex issues. Activates methodical investigation protocol with evidence gathering, hypothesis testing, and rigorous verification. Use when standard troubleshooting fails or when issues require systematic root cause analysis.
angular-cypress
oguzhan18/angular-ecosystem-skills
ALWAYS use when testing Angular applications with Cypress, E2E testing, or component testing in Angular.
characterisation-tests
citypaul/.dotfiles
Use when modifying existing code that lacks tests and you need to document its actual current behavior before making changes -- the legacy code dilemma where you need tests to refactor safely but the code was not written for testability. Specifically for understanding and pinning down what code currently does, not what it should do. Do NOT use for test-driving new behavior (see tdd), general test writing patterns (see testing), verifying test effectiveness (see mutation-testing), or making untestable code testable (see finding-seams).
mutation-testing
citypaul/.dotfiles
Set up and run mutation testing with Stryker, including full-project and focused diff runs against the current review base, then use surviving mutants to strengthen weak or missing tests. Use as the end-of-phase PR-readiness gate after implementation and refactoring are complete, not inside each RED-GREEN increment. Also use when the user explicitly asks for mutation testing, Stryker, mutation score, or surviving-mutant analysis. For writing the tests themselves, see testing.
rspec-skill
lambdatest/agent-skills
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fcode-cli
factorialco/factorial-code-skills
Use the Factorial Code CLI (fcode) for local development and cloud sync — the pull → add → run → push flow, the local webhook/forms server, workspace versions and aliases, and the workspace config files (metadata.json, team.json, variables). Use when running fcode commands, testing a process locally, syncing to the cloud, or configuring a process's webhook, form, or version settings.
vitest-testing
oakoss/agent-skills
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storybook-testing
yonatangross/orchestkit
Storybook 10 testing patterns with Vitest integration, ESM-only distribution, CSF3 typesafe factories, play() interaction tests, Chromatic TurboSnap visual regression, module automocking, accessibility addon testing, and autodocs generation. Use when writing component stories, setting up visual regression testing, configuring Storybook CI pipelines, or migrating from Storybook 9.
testunit-skill
lambdatest/agent-skills
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flutter-dev
bogdanustyak/flutter-expert-skill
Expert Flutter and Dart development skill for building beautiful, performant, and maintainable applications. Use when users request Flutter/Dart development tasks including creating apps, widgets, screens, implementing features, debugging, testing, state management, navigation, theming, layouts, or working with Flutter projects. Covers mobile, web, and desktop platforms with modern best practices, Material Design, responsive UI, and code quality standards.
component-fixtures
microsoft/vscode
Use when creating or updating component fixtures for screenshot testing, or when designing UI components to be fixture-friendly. Covers fixture file structure, theming, service setup, CSS scoping, async rendering, and common pitfalls.
testing-boss
pedronauck/skills
Testing doctrine for tests that reveal bugs instead of passing for the wrong reason — spanning software and LLM/AI systems. Use when authoring or reviewing tests, adding a mock, deciding where a test belongs, letting a coding agent generate tests, triaging flaky CI, designing an eval suite for an LLM/agent feature, or rebuilding a brittle suite. Not for general code review, library debugging unrelated to tests, CI pipeline design beyond tests, or production observability.
openai-codex-rust-patterns
pproenca/dot-skills
OpenAI Codex Rust coding patterns distilled from the codex-rs workspace. Use this skill whenever writing, reviewing, or refactoring Rust code — especially for async agents, CLI tools, sandboxing, secret handling, Ratatui TUIs, JSON-RPC protocols, tokio-based services, or any codebase that needs defensive panic discipline. Trigger even when the user does not explicitly mention Codex, because the patterns generalize to any production Rust workspace. Covers async cancellation, error enum design, process sandboxing, DNS-rebinding defense, credential hardening (zeroize/mlock/ctor), Cargo workspace architecture, wiremock-based fakes, insta snapshot testing, OpenTelemetry tracing, and Ratatui rendering.
finding-seams
citypaul/.dotfiles
Use when existing code has untestable dependencies that prevent writing tests -- direct construction of collaborators, static or global function calls, tight coupling to external systems, or singleton access patterns. Specifically for identifying substitution points (seams) that make legacy or tightly-coupled code testable without editing at the call site. Do NOT use for greenfield TDD (see tdd), general test writing patterns (see testing), or refactoring already-tested code (see refactoring).
python-testing-strategist
jorgealves/agent_skills
Design comprehensive Python test suites including unit, integration, and E2E tests. Use when establishing testing patterns for new or existing Python applications.
golang-idioms
rohitg00/awesome-claude-code-toolkit
Idiomatic Go patterns for error handling, interfaces, concurrency, testing, and module management
playwright-test-results
microsoft/playwright
Query Playwright CI test results from the aggregated DuckDB database. Answers questions about flaky tests, failure rates, slow tests, and per-run/SHA/PR results without hunting through GitHub artifacts.
testing-strategies
rohitg00/awesome-claude-code-toolkit
Testing strategies including contract testing, snapshot testing, mutation testing, property-based testing, and test organization
playwright
gentleman-programming/gentleman-skills
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xiaohongshu-automation
wrt820232/xiaohongshu-automation
小红书自动化控制 - 通过 Playwright CDP 连接 OpenClaw 浏览器实现发布、搜索、评论等功能
product-frameworks
yonatangross/orchestkit
Product management frameworks for business cases, market analysis, strategy, prioritization, OKRs/KPIs, personas, requirements, and user research. Use when building ROI projections, competitive analysis, RICE scoring, OKR trees, user personas, PRDs, or usability testing plans.
testing-patterns
jezweb/claude-skills
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model-serving-kubernetes
bagelhole/devops-security-agent-skills
Deploy ML models on Kubernetes with KServe (formerly KFServing) and NVIDIA Triton Inference Server. Includes canary deployments, autoscaling, model versioning, A/B testing, and GPU resource management for production model serving.
experimentation-analytics
rampstackco/claude-skills
How to read experiment results without fooling yourself. Confidence intervals, p-values, multiple testing, sequential testing, CUPED, heterogeneous treatment effects, ratio metrics, network effects, dashboard reconciliation, and the interpretation failures that produce confidently wrong shipping decisions. Use this skill whenever the user is reading a finished experiment result panel and about to make a ship, kill, or iterate decision, or when an experiment number does not match the dashboard number. Triggers on read experiment results, result panel, ship or kill decision, p-value, confidence interval, statistical significance, multiple testing, peeking, sequential testing, CUPED, variance reduction, heterogeneous treatment effects, ratio metric, network effects, inconclusive test, experiment versus dashboard mismatch. Use `experiment-design` instead when the test has not run yet and the question is hypothesis, sample size, duration, or what to test.
phpunit-best-practices
pentiminax/agent-skills
PHPUnit testing best practices and conventions guide. This skill should be used when writing, reviewing, or refactoring PHPUnit tests to ensure consistent, maintainable, and effective test suites. Triggers on tasks involving test creation, test refactoring, test configuration, code coverage, data providers, mocking, or PHPUnit XML configuration.
n8n-workflow-testing-fundamentals
proffesor-for-testing/agentic-qe
Comprehensive n8n workflow testing including execution lifecycle, node connection patterns, data flow validation, and error handling strategies. Use when testing n8n workflow automation applications.
playwright-devops
microsoft/playwright
DevOps workflows for Playwright - CI failure analysis, workflow debugging, and release operations.
n8n-security-testing
proffesor-for-testing/agentic-qe
Credential exposure detection, OAuth flow validation, API key management testing, and data sanitization verification for n8n workflows. Use when validating n8n workflow security.
webapp-testing
moizibnyousaf/ai-agent-skills
Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.
testing-patterns
vudovn/ag-kit
Testing patterns and principles. Unit, integration, mocking strategies.
ultraqa
yeachan-heo/oh-my-codex
Adversarial dynamic e2e QA workflow - generate hostile scenarios, test, verify, fix, report, and clean up
vitest-3-features
josiahsiegel/claude-plugin-marketplace
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building-python-clis
wdm0006/python-skills
Builds command-line interfaces for Python libraries using Click or Typer. Includes command groups, argument handling, progress bars, shell completion, and CLI testing with CliRunner. Use when adding CLI functionality to a library or building standalone command-line tools.
qa-expert
404kidwiz/claude-supercode-skills
Quality assurance specialist focusing on test strategy, quality processes, and comprehensive testing methodologies
browser-automation-framework
qodex-ai/ai-agent-skills
Automate browser interactions and web testing. Provides scriptable browser control for web scraping, testing, and automation.
exploratory-testing-advanced
proffesor-for-testing/agentic-qe
Advanced exploratory testing techniques with Session-Based Test Management (SBTM), RST heuristics, and test tours. Use when planning exploration sessions, investigating bugs, or discovering unknown quality risks.
importing-to-seekdb
oceanbase/seekdb-ecology-plugins
Import CSV or Excel files into seekdb vector database and manage collections. Supports automatic vectorization of specified columns using embedding functions. When users need to: (1) Read and preview Excel files, (2) Import CSV/Excel data into seekdb, (3) Create vector collections from tabular data, (4) Vectorize specific text columns for semantic search, (5) Batch insert product/document data with embeddings, (6) Delete collections, or (7) Access sample data files (sample_products.csv/xlsx) for testing - IMPORTANT: sample files are located in this skill's example-data/ directory, you MUST read this skill file first to get the correct path.
android_ui_verification
sickn33/agentic-awesome-skills
Automated end-to-end UI testing and verification on an Android Emulator using ADB.
testing-python
thebeardedbearsas/claude-craft
Stratégie de Tests Python 3.14+. Use when writing tests, reviewing test coverage, or setting up testing.
pydantic-ai-testing
existential-birds/beagle
Test PydanticAI agents using TestModel, FunctionModel, VCR cassettes, and inline snapshots. Use when writing unit tests, mocking LLM responses, or recording API interactions.
issue-to-prd
fellowship-dev/dogfooded-skills
Use when converting a new GitHub issue into a structured PRD, or posting clarifying questions when the issue is underspecified.
testing-react
thebeardedbearsas/claude-craft
Stratégie de Tests React 19 + Compiler 1.0. Use when writing tests, reviewing test coverage, or setting up testing.
testing-symfony
thebeardedbearsas/claude-craft
Stratégie de Tests Symfony 8.1 / PHP 8.5. Use when writing tests, reviewing test coverage, or setting up testing.
rag-observability-evals
bagelhole/devops-security-agent-skills
Monitor and evaluate RAG systems with retrieval quality metrics, groundedness checks, hallucination detection, and continuous regression testing.
storekit
johnrogers/claude-swift-engineering
Use when implementing in-app purchases, StoreKit 2 subscriptions, consumables, non-consumables, or transaction handling. Covers testing-first workflow with .storekit configuration, StoreManager architecture, and transaction verification.
jest
bobmatnyc/claude-mpm-skills
Jest with TypeScript - Industry standard testing framework with 70% market share, mature ecosystem, React Testing Library integration
testing-flutter
thebeardedbearsas/claude-craft
Testing Flutter 3.44 / BLoC v9 / Riverpod 3 - Stratégie Complète. Use when writing tests, reviewing test coverage, or setting up testing.
windows-git-bash-testing
josiahsiegel/claude-plugin-marketplace
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parallel-agents
vudovn/ag-kit
Multi-agent orchestration patterns. Use when multiple independent tasks can run with different domain expertise or when comprehensive analysis requires multiple perspectives.
mobile-debugging
jamditis/claude-skills-journalism
Remote JavaScript console and debugging on mobile. Use for phone/tablet console errors, responsive testing, Eruda, and vConsole.
