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home/skills/testing

home/skills/testing

Testing Skills

985 testing agent skills for Claude Code and AI agents, ranked by real installs from npm, PyPI and skills.sh. tdd leads with 501k installs a month.

#Type

1tddSkills for Real Engineers. Straight from my .agents directory.SkillsJul 2026501k181k
2test-driven-developmentUse when implementing any feature or bugfix, before writing implementation codeSkillsJul 2026175k259k
3qaSkills for Real Engineers. Straight from my .agents directory.SkillsJul 2026160k181k
4verification-before-completionUse when about to claim work is complete, fixed, or passing, before committing or creating PRs - requires running verification commands and confirming output before making any success claims; evidenceSkillsJul 2026153k259k
5webapp-testingToolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser lSkillsJul 2026120k163k
6playwright-best-practicesUse when writing Playwright tests, fixing flaky tests, debugging failures, implementing Page Object Model, configuring CI/CD, optimizing performance, mocking APIs, handling authentication or OAuth, teSkillsJul 202664k338
7ab-testingWhen the user wants to plan, design, or implement an A/B test or experiment, or build a growth experimentation program. Also use when the user mentions "A/B test," "split test," "experiment," "test thSkillsJul 202635k41k
8momentic-testCreate, run, and maintain Momentic E2E tests and modules, which are serialized to disk as *.test.yaml and *.module.yaml files. Momentic uses fast, accurate AI agents to automate browser interactions fSkillsJul 202635k12
9golang-testingProduction-ready Golang tests — table-driven tests, testify suites and mocks, parallel tests, fuzzing, fixtures, goroutine leak detection with goleak, snapshot testing, code coverage, integration testSkillsJul 202635k2.7k
10firecrawl-qaQA test a live website with Firecrawl browser and scrape evidence. Use when the user wants exploratory QA, form testing, navigation/link checks, responsive checks, performance observations, bug reportSkillsJun 202629k95
11firecrawl-demo-walkthroughWalk through a product's key flows with Firecrawl browser and produce a structured UX/product walkthrough. Use for signup, onboarding, pricing, docs, dashboard, product demo prep, UX teardown, and firSkillsJun 202629k95
12python-testing-patternsMulti-harness agentic plugin marketplace for Claude Code, Codex CLI, Cursor, OpenCode, GitHub Copilot, and Gemini CLISkillsJul 202628k38k
13flutter-add-integration-testConfigures Flutter Driver for app interaction and converts MCP actions into permanent integration tests. Use when adding integration testing to a project, exploring UI components via MCP, or automatinSkillsJul 202622k2.7k
14momentic-mobile-testCreate, run, and maintain Momentic mobile E2E tests and modules for Android and iOS. Use Momentic MCP tools for live device validation, and use direct v2 YAML edits only for high-confidence local mobiSkillsJul 202621k12
15e2e-testing-patternsMaster end-to-end testing with Playwright and Cypress to build reliable test suites that catch bugs, improve confidence, and enable fast deployment. Use when implementing E2E tests, debugging flaky teSkillsJul 202620k38k
16javascript-testing-patternsMulti-harness agentic plugin marketplace for Claude Code, Codex CLI, Cursor, OpenCode, GitHub Copilot, and Gemini CLISkillsJul 202617k38k
17playwright-generate-testGenerate a Playwright test based on a scenario using Playwright MCPSkillsJul 202616k37k
18test-driven-developmentDrives development with tests. Use when implementing any logic, fixing any bug, or changing any behavior. Use when you need to prove that code works, when a bug report arrives, or when you're about toSkillsJul 202614k80k
19playwright-explore-websiteWebsite exploration for testing using Playwright MCPSkillsJul 202613k37k
20browser-testing-with-devtoolsTests in real browsers via Chrome DevTools MCP. Use when building or debugging anything that runs in a browser. Use when you need to inspect the DOM, capture console errors, analyze network requests, SkillsJul 202613k80k
21javascript-typescript-jestBest practices for writing JavaScript/TypeScript tests using Jest, including mocking strategies, test structure, and common patterns.SkillsJul 202612k37k
22pytest-coverageRun pytest tests with coverage, discover lines missing coverage, and increase coverage to 100%.SkillsJul 202612k37k
23webapp-testingToolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser lSkillsJul 202612k37k
24java-junitGet best practices for JUnit 5 unit testing, including data-driven testsSkillsJul 202611k37k
25dart-collect-coverageCollect coverage using the coverage packge and create an LCOV reportSkillsJul 202610.0k407
26agentic-evalPatterns and techniques for evaluating and improving AI agent outputs. Use this skill when: - Implementing self-critique and reflection loops - Building evaluator-optimizer pipelines for quality-critiSkillsJul 20269.9k37k
27dart-generate-test-mocksDefine and generate mock objects for external dependencies using `package:mockito` and `build_runner`. Use when unit testing classes that depend on complex external services like APIs or databases.SkillsJul 20269.8k407
28my-pull-requestsCommunity-contributed instructions, agents, skills, and configurations to help you make the most of GitHub Copilot.SkillsJul 20269.8k37k
29scoutqa-testThis skill should be used when the user asks to "test this website", "run exploratory testing", "check for accessibility issues", "verify the login flow works", "find bugs on this page", or requests aSkillsJul 20269.7k37k
30csharp-xunitGet best practices for XUnit unit testing, including data-driven testsSkillsJul 20269.5k37k
31flutter-testing-appsAgent skill from flutter/skillsSkillsJul 20269.0k2.7k
32csharp-nunitGet best practices for NUnit unit testing, including data-driven testsSkillsJul 20268.8k37k
33csharp-mstestGet best practices for MSTest 3.x/4.x unit testing, including modern assertion APIs and data-driven testsSkillsJul 20268.7k37k
34csharp-tunitGet best practices for TUnit unit testing, including data-driven testsSkillsJul 20268.7k37k
35temporal-python-testingTest Temporal workflows with pytest, time-skipping, and mocking strategies. Covers unit testing, integration testing, replay testing, and local development setup. Use when implementing Temporal workflSkillsJul 20268.4k38k
36web3-testingTest 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 validSkillsJul 20268.3k38k
37expo-skill-evalEvaluate Expo skills in this repo end-to-end - trigger accuracy, generated code quality, and runtime screenshots on iOS simulator and Android emulator via Expo Go (web optional). Use when the user wanSkillsJul 20264.6k2.3k
38dogfoodSystematically explore and test a mobile app on iOS/Android with agent-device to find bugs, UX issues, and other problems. Use when asked to dogfood, QA, exploratory test, find issues, bug hunt, or teSkillsJul 20264.2k3.6k
39swift-testing-expertExpert guidance for Swift Testing: test structure, #expect/#require macros, traits and tags, parameterized tests, test plans, parallel execution, async waiting patterns, and XCTest migration. Use whenSkillsApr 20264.0k431
40playwright-expertUse when writing E2E tests with Playwright, setting up test infrastructure, or debugging flaky browser tests. Invoke to write test scripts, create page objects, configure test fixtures, set up reporteSkillsMay 20263.9k11k
41harness-writingTechniques for writing effective fuzzing harnesses across languages. Use when creating new fuzz targets or improving existing harness code.SkillsJul 20263.9k6.2k
42testing-handbook-generatorMeta-skill that analyzes the Trail of Bits Testing Handbook (appsec.guide) and generates Claude Code skills for security testing tools and techniques. Use when creating new skills based on handbook coSkillsJul 20263.8k6.2k
43libfuzzerCoverage-guided fuzzer built into LLVM for C/C++ projects. Use for fuzzing C/C++ code that can be compiled with Clang.SkillsJul 20263.7k6.2k
44ossfuzzOSS-Fuzz provides free continuous fuzzing for open source projects. Use when setting up continuous fuzzing infrastructure or enrolling projects.SkillsJul 20263.7k6.2k
45libaflLibAFL is a modular fuzzing library for building custom fuzzers. Use for advanced fuzzing needs, custom mutators, or non-standard fuzzing targets.SkillsJul 20263.7k6.2k
46ruzzyRuzzy is a coverage-guided Ruby fuzzer by Trail of Bits. Use for fuzzing pure Ruby code and Ruby C extensions.SkillsJul 20263.7k6.2k
47cypress-authorCreates, updates, and fixes Cypress tests (E2E/end-to-end and component tests). Use when the user asks to create tests, add tests, write tests, update tests, test this file/component, new spec, or fixSkillsJul 20263.2k37
48unit-test-bean-validation Modular plugin marketplace for Claude Code and agentic CLIs, with validated, spec-driven skills, agents, commands, and workflows for Java, TypeScript, Python, PHP, AWS, and AI.SkillsJun 20262.8k310
49cypress-explainExplains Cypress tests (E2E and component tests), and answers questions about Cypress use and behavior. Use when the user asks to explain how a test works, explain how Cypress works, review or critiquSkillsJul 20262.7k37
50cypress-docsSearch and extract Cypress information from official documentation (docs.cypress.io, cypress.io); prefer LLM markdown under /llm/* and refuse unverified API or behavior claims.SkillsJul 20262.5k37

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