Skills real projects publish on GitHub, most starred first. Each one says what it will make an agent do before you copy it.
aiqualitylabSkillaiqualitylab/agent-skills/skills/api-testing/SKILL.md
Generate and run REST API tests using Postman collections and Newman CLI. Use when asked to test APIs, verify endpoints, validate responses, or run Postman tests in CI.
Cure-Consulting-GroupSkillCure-Consulting-Group/ProductEngineeringSkills/skills/engineering/e2e-testing/SKILL.md
Writes E2E test suites (Playwright, Compose/Espresso, XCUITest) with page objects and CI wiring. Use when adding E2E, smoke, or visual regression tests for a user flow or fixing flaky E2E tests.
datashamanSkilldatashaman/growth/.github/skills/pest-testing/SKILL.md
Use this skill for Pest PHP testing in Laravel projects only. Trigger whenever any test is being written, edited, fixed, or refactored — including fixing tests that broke after a code change, adding assertions, converting PHPUnit to Pest, adding datasets, and TDD workflows. Always activate when the user asks how to write something in Pest, mentions test files or directories (tests/Feature, tests/Unit, tests/Browser), or needs browser testing, smoke testing multiple pages for JS errors, or architecture tests. Covers: test()/it()/expect() syntax, datasets, mocking, browser testing (visit/click/fill), smoke testing, arch(), Livewire component tests, RefreshDatabase, and all Pest 4 features. Do not use for factories, seeders, migrations, controllers, models, or non-test PHP code.
magallonSkillmagallon/testing-toolkit/e2e-testing/SKILL.md
Generates and manages end-to-end tests for critical user flows in any web project. Covers test design, Page Object Model, selector strategy, wait patterns, auth state reuse, test data management, network mocking, visual regression, accessibility testing, flaky test diagnosis, and CI/CD pipeline configuration. Stack-agnostic — adapts to Playwright, Cypress, Selenium, Laravel Dusk, Capybara, or any browser automation framework. Use this skill when the user asks to write E2E tests, automate browser tests, test user flows end-to-end, fix flaky tests, set up visual regression testing, configure E2E in CI/CD, debug failing E2E tests, or test across multiple browsers. Also triggers when the user mentions Playwright, Cypress, browser testing, smoke tests, critical path testing, or end-to-end test automation. Works with testing-strategy — use testing-strategy first to decide WHAT to test, then this skill to implement the E2E tests.
mejbaurbaharSkillmejbaurbahar/fagun/skills/api-testing/SKILL.md
Use when testing REST/GraphQL APIs directly — status codes, schema/contract validation, auth, pagination, rate limits, idempotency, and error responses. Use instead of driving the UI when the question is really about the API layer.
mejbaurbaharSkillmejbaurbahar/fagun/skills/llm-testing/SKILL.md
Use when testing LLM-powered features — prompt testing, hallucination/faithfulness checks, RAG evaluation, agent/tool-use testing, prompt injection and LLM security, regression testing across model/prompt versions, and cost/latency/token budget testing.
paulocmguerreiroSkillpaulocmguerreiro/findocprocessor-backend-laravel/.claude/skills/pest-testing/SKILL.md
Use this skill for Pest PHP testing in Laravel projects only. Trigger whenever any test is being written, edited, fixed, or refactored — including fixing tests that broke after a code change, adding assertions, converting PHPUnit to Pest, adding datasets, and TDD workflows. Always activate when the user asks how to write something in Pest, mentions test files or directories (tests/Feature, tests/Unit, tests/Browser), or needs browser testing, smoke testing multiple pages for JS errors, or architecture tests. Covers: test()/it()/expect() syntax, datasets, mocking, browser testing (visit/click/fill), smoke testing, arch(), Livewire component tests, RefreshDatabase, and all Pest 4 features. Do not use for factories, seeders, migrations, controllers, models, or non-test PHP code.
royaluniondesign-sysSkillroyaluniondesign-sys/claude-os/.claude/skills/cpp-testing/SKILL.md
Use only when writing/updating/fixing C++ tests, configuring GoogleTest/CTest, diagnosing failing or flaky tests, or adding coverage/sanitizers.
savethepolarbearsSkillsavethepolarbears/agenthaus-marketplace/.agents/skills/e2e-testing/SKILL.md
../../../plugins/playwright-testing/skills/e2e-testing/SKILL.md
ykotikSkillykotik/cli-power-skills/skills/api-testing/SKILL.md
Use when testing HTTP endpoints, probing URLs for status and headers, or running declarative API test suites from plain text files
mbwsimsSkillmbwsims/claude-universe/skills/test-plan/SKILL.md
This skill should be used when the user asks to "plan tests", "what should I test", "what tests do I need", "test plan for", "testing strategy for", "test matrix for", "what cases should I cover", "help me plan tests", mentions "/test-plan", or wants to understand what tests are needed before writing any test code.
EvilFreelancerSkillEvilFreelancer/secs/.agents/skills/testing-apis/SKILL.md
Test REST and GraphQL APIs for authentication bypasses, authorization flaws, IDOR, mass assignment, injection attacks, and rate limiting issues. Use when pentesting APIs or testing microservices security.
MicrosoftSkillmicrosoft/Employee-Self-Service-Agent-Developer-Kit/solutions/ess-maker-skills/src/skills/topics/test/SKILL.md
Test / Debug Topic Skill Guides a maker through debugging a topic they just created or updated — driving it, confirming the reply is real, checking the fix doesn't break
MicrosoftSkillmicrosoft/Employee-Self-Service-Agent-Developer-Kit/solutions/ess-maker-skills/src/skills/workflows/test/SKILL.md
Test Workflow Skill Guides a maker through debugging a Power Automate cloud flow (workflow) behind their agent — exercising it, reading its per-action run history, localizing a fault
AndrewDrygaSkillAndrewDryga/emisar/.claude/skills/elixir-testing/SKILL.md
Write or improve ExUnit tests for portal/ the emisar way — DataCase/ConnCase, the real fixtures in test/support, and the mandatory happy / denial / cross-account paths (§7). Use when adding tests for a context/job/LiveView, or when a change is missing its denial + cross-account coverage.
SentrySkillgetsentry/sentry/.agents/skills/generate-snapshot-tests/SKILL.md
Generate snapshot test files for Sentry frontend React components. Use when asked to "generate snapshot tests", "add snapshot tests", "create visual snapshots", "write snapshot tests", "add visual regression tests", or "snapshot this component". Accepts an optional component path or name via $ARGUMENTS.
iamcaominhtienSkilliamcaominhtien/kanban-board-mcp/.github/skills/unit-testing/SKILL.md
Unit testing & component testing skill for any language or framework. Use when: writing tests, setting up a test suite, thinking about what to test, applying TDD, testing a React component, testing a Python/Node.js backend, mocking dependencies, checking test coverage, understanding unit vs component vs integration tests. Triggers: 'write a test', 'add tests for', 'unit test this', 'component test', 'test this function', 'how do I test', 'TDD', 'what should I test', 'set up vitest', 'set up pytest', 'test coverage', 'mock this', 'I don't know how to test this'.
Prompthon-IOSkillPrompthon-IO/agent-systems-handbook/skills/webapp-testing/SKILL.md
Verify a local web app in a real browser with page, element, click, form, console and screenshot evidence. Use after a build or UI change; do not implement features or publish deployments with this skill.
MicrosoftSkillmicrosoft/testfx/.agents/skills/writing-mstest-tests/SKILL.md
Write new MSTest unit tests and fix existing MSTest code using MSTest 3.x/4.x modern APIs and best practices. USE FOR: write or create MSTest unit tests, fix or modernize MSTest assertions, better MSTest assertion than Assert.IsTrue, replace hard cast with MSTest type assertion, MSTest assertion APIs (IsInstanceOfType, Contains, ContainsSingle, HasCount, IsEmpty, IsNotEmpty, DoesNotContain, StartsWith, EndsWith, MatchesRegex, IsGreaterThan, IsInRange, IsNull), fix swapped Assert.AreEqual arguments, replace ExpectedException with Assert.Throws, data-driven tests (DataRow, DynamicData, ValueTuples), test lifecycle (sealed classes, TestInitialize, TestCleanup), async tests and cancellation tokens, test parallelization (Parallelize / DoNotParallelize), MSTest.Sdk project setup. DO NOT USE FOR: broad test quality audits (use test-anti-patterns), running tests (use run-tests), MSTest version migration (use migrate-mstest-v1v2-to-v3 or migrate-mstest-v3-to-v4), xUnit/NUnit/TUnit, or non-.NET languages.
happier-devSkillhappier-dev/happier/.agents/skills/happier-testing/SKILL.md
Repo-specific TDD and test-validation workflow for Happier changes, with lane selection, fixture policy, and anti-flake guardrails.
A folder with a SKILL.md file: a name, a description of when to use it, and instructions. Claude loads a skill only when the task matches its description.
Copy the folder into your project's .claude/skills/ directory, or into your own skills folder to use it everywhere.
We read each file for commands that read secrets, delete things or pipe downloads into a shell, and say so before you copy it. No warning is not a promise that a file is safe.
Open a skill to see its discussion. Reports from people and their agents are coming.
