Skills real projects publish on GitHub, most starred first. Each one says what it will make an agent do before you copy it.
ThegreenpiranhaSkillThegreenpiranha/tasque/.claude/skills/testing/SKILL.md
Use when writing, modifying, running, or reviewing tests for the project. Covers what to test, what not to test, structure, naming, fixtures, coverage targets, and the rule that tests are written against behaviour — never modified to paper over broken code.
ThuPhuong1010SkillThuPhuong1010/claude-factory/.claude/skills/testing/SKILL.md
Testing strategy. Trigger khi viết test, thiết kế test architecture, hoặc debug test failure.
timmo001Skilltimmo001/skills/testing/SKILL.md
Choose tests for their concrete regression value and avoid low-value coverage. Use during implementation, fixes, planning, diagnosis, and code review when choosing verification, adding or changing tests, or considering a missing-test finding.
ElasticSkillelastic/kibana/.agents/skills/ftr-testing/SKILL.md
Deep reference for the Kibana Functional Test Runner (FTR). Use when reading, analyzing, debugging, or reviewing FTR tests, including config anatomy, services, page objects, loadTestFile patterns, data loading, tags, CI wiring, and common FTR idioms.
SentrySkillgetsentry/sentry/.agents/skills/hybrid-cloud-test-gen/SKILL.md
Generate hybrid cloud tests for the Sentry codebase. Use when asked to "generate HC test", "create hybrid cloud test", "write HC test", "add HC test", "write RPC test", "test RPC service", "silo test", "cross-silo test", "outbox test", "API gateway test", or "endpoint silo test". Covers RPC service tests, API gateway tests, outbox pattern tests, and API endpoint tests with silo decorators.
alinaqiSkillalinaqi/maggy/skills/ui-testing/SKILL.md
Visual testing - catch invisible buttons, broken layouts, contrast
catlog22Skillcatlog22/maestro-flow/.claude/skills/team-testing/SKILL.md
Unified team skill for testing team. Progressive test coverage through Generator-Critic loops, shared memory, and dynamic layer selection. Triggers on "team testing".
manaflow-aiSkillmanaflow-ai/cmux/skills/cmux-testing/SKILL.md
Choose scoped cmux verification, add behavioral tests, and validate Swift test targets and wiring. Use when adding tests or deciding what local/CI evidence a change needs.
mrgoonieSkillmrgoonie/claudekit-skills/.claude/skills/web-testing/SKILL.md
Web testing with Playwright, Vitest, k6. E2E/unit/integration/load/security/visual/a11y testing. Use for test automation, flakiness, Core Web Vitals, mobile gestures, cross-browser.
SentrySkillgetsentry/sentry-javascript/.agents/skills/write-tests/SKILL.md
Write high-quality unit tests (Vitest) and E2E tests (Playwright) following senior test-engineering practices. Use this skill whenever asked to write tests, add test coverage, create test cases, fix failing tests, add missing assertions, test a new feature, write specs, or cover edge cases. Also trigger when the user says "write tests for", "add tests", "test this", "cover this", "needs tests", "add E2E test", "add unit test", "test coverage", or when reviewing code and noticing missing test coverage.
xu-xiangSkillxu-xiang/everything-claude-code-zh/.agents/skills/e2e-testing/SKILL.md
Playwright E2E 测试模式、页面对象模型（POM）、配置、CI/CD 集成、产物管理以及不稳定测试（flaky test）策略。
CesarjoquinSkillCesarjoquin/Marketing-Skills/skills/ab-testing/SKILL.md
When 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 this change," "variant copy," "multivariate test," "hypothesis," "should I test this," "which version is better," "test two versions," "statistical significance," "how long should I run this test," "growth experiments," "experiment velocity," "experiment backlog," "ICE score," "experimentation program," or "experiment playbook." Use this whenever someone is comparing two approaches and wants to measure which performs better, or when they want to build a systematic experimentation practice. For tracking implementation, see analytics. For page-level conversion optimization, see cro.
codeaholicguySkillcodeaholicguy/ai-devkit/skills/dev-testing/SKILL.md
AI DevKit · Testing phase guidance for adding and validating feature test coverage. Use when the user wants to write tests, update testing docs, run coverage, close coverage gaps, or run dev-lifecycle phase 8.
vellum-aiSkillvellum-ai/vellum-assistant/.claude/skills/cli-testing/SKILL.md
Manually test a running Vellum assistant end-to-end purely from the CLI — no desktop app or web UI. Hatch an instance, send messages, watch the reply, and tear it down. Use when verifying assistant behavior, reproducing a bug, or smoke-testing a change without the macOS/web clients.
L-X-TSkillL-X-T/ng-agentic-skills/.agents/skills/ng-testing/SKILL.md
Write Vitest unit and component tests for Angular – TestBed for standalone + zoneless components, signal/computed assertions, DI and HttpClient mocking, and CDK component harnesses. Use when the user wants to unit-test or spec a component, service, pipe, signal, or computed, mentions Vitest, TestBed, HttpTestingController, or component harnesses, or says "test this component/service". Not for browser end-to-end tests – use create-e2e-tests.
AnthropicSkillanthropics/knowledge-work-plugins/engineering/skills/testing-strategy/SKILL.md
Design test strategies and test plans. Trigger with "how should we test", "test strategy for", "write tests for", "test plan", "what tests do we need", or when the user needs help with testing approaches, coverage, or test architecture.
SentrySkillgetsentry/sentry/.agents/skills/react-testing/SKILL.md
Write and review React/TypeScript tests for Sentry's frontend using Jest and React Testing Library. Use when adding or editing tests in static/ (*.spec.tsx), writing component/hook tests, mocking API responses with MockApiClient, testing routing or network requests, or when asked to "write a frontend test", "add a React test", "test this component", or "fix a flaky RTL test".
nodetool-aiSkillnodetool-ai/nodetool/.agents/skills/yts806379-everything-claude-code-e2e-testing/SKILL.md
Write, repair, or diagnose Playwright E2E tests for NodeTool web and workflow harnesses using existing suites and fixtures.
zebbernSkillzebbern/claude-code-guide/skills/idor-testing/SKILL.md
This skill should be used when the user asks to "test for insecure direct object references," "find IDOR vulnerabilities," "exploit broken access control," "enumerate user IDs or object references," or "bypass authorization to access other users' data." It provides comprehensive guidance for detecting, exploiting, and remediating IDOR vulnerabilities in web applications.
MicrosoftSkillmicrosoft/xdp-for-windows/.github/skills/xdp-testing/SKILL.md
XDP-for-Windows test execution and debugging workflow. Use when running tests (functional, spinxsk, pktfuzz, ringperf, rxfilter, xskmaprx, xskfwdkm), debugging bugchecks, attaching kd, recovering test machines after crashes, or invoking any tools/*.ps1 script that runs on hardware. Covers PowerShell remoting via -ComputerName, kd remote pipe debugging, and the inject/build/bugcheck/.reboot/check-drivers recovery loop.
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.
