Skills real projects publish on GitHub, most starred first. Each one says what it will make an agent do before you copy it.
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MicrosoftSkillmicrosoft/CCF/.github/skills/testing/SKILL.md
Select, run, and write CCF unit, end-to-end, partition, compatibility, coverage, and Python SDK tests. Covers prerequisites, the tests.sh wrapper, test labels, and e2e registration.
Often used withbundle-dependency-prsupdate-library-template
codewithmukeshSkillcodewithmukesh/dotnet-claude-kit/skills/testing/SKILL.md
Testing strategy for .NET 10 applications. Covers xUnit v3, WebApplicationFactory for integration tests, Testcontainers for real database testing, Verify for snapshot testing, and the AAA pattern. Load this skill when writing tests, setting up test infrastructure, reviewing test coverage, or when the user mentions "test", "xUnit", "WebApplicationFactory", "Testcontainers", "integration test", "unit test", "bUnit", "snapshot test", "Verify", "test coverage", "AAA pattern", "WireMock", or "FakeTimeProvider".
Often used withbundle-dependency-prsupdate-library-template
evancaSkillevanca/flutter-ai-rules/skills/testing/SKILL.md
Use when writing or reviewing Flutter/Dart tests (unit, widget, golden), fixing flaky tests, adding coverage, or choosing between unit and widget tests.
Often used withbundle-dependency-prsupdate-library-template
LedgerHQSkillLedgerHQ/ledger-live/.agents/skills/testing/SKILL.md
Write unit and integration tests for the Ledger Wallet apps and for packages in the layers (`shared/`, `domain/`, `features/`, `devtools/`): Jest with React Testing Library, `@support/jest` presets, MSW handlers and testing best practices. Integration tests fake HTTP with MSW `jest.fn()` endpoint mocks instead of `jest.mock`-ing modules. Use when writing or reviewing "*.test.*", "*.spec.*", "**/tests/**", "**/__tests__/**", "**/__integrations__/**", "**/jest-setup*" or a package's `jest.config.js`.
Often used withbundle-dependency-prsupdate-library-template
FerroxLabsSkillFerroxLabs/wayland/.claude/skills/testing/SKILL.md
Testing workflow and quality standards for writing and running tests. Use when: (1) Writing new tests, (2) Adding a new feature that needs tests, (3) Modifying logic that has existing tests, (4) Before claiming a task is complete.
Often used withbundle-dependency-prsupdate-library-template
vavalleeSkillvavallee/bindery/.claude/skills/testing/SKILL.md
Use when writing or running Bindery tests, before pushing, or before opening a PR — covers the full pre-PR matrix (lint, vet, govulncheck, test, frontend), pinned tool versions, the project's test patterns (db.OpenMemory, httptest, vitest), and common failure modes.
Often used withbundle-dependency-prsupdate-library-template
andymaiSkillandymai/gridfinity-layout-tool/.claude/skills/testing/SKILL.md
Write and run tests — Vitest three-project routing (unit/dom/generators), src/test/ utilities (resetAllStores, createTestLayout, expectOk), real-WASM geometry scenario tests and triangleCount snapshot updates, __kernel-tests__ profile config, Playwright e2e/smoke/visual, benchmarks. Load for "document is not defined", "Cannot pass deleted object", tests passing alone but failing in the full run, flaky e2e, coverage-threshold failures, or updating scenario snapshots.
Often used withbundle-dependency-prsupdate-library-template
meleantonioSkillmeleantonio/ChernyCode/.cursor/skills/testing/SKILL.md
Testing conventions using pytest. Use when writing tests, creating fixtures, or running test suites.
Often used withbundle-dependency-prsupdate-library-template
web-infra-devSkillweb-infra-dev/rstest/.agents/skills/testing/SKILL.md
Testing workflow for the Rstest monorepo. Use when running unit tests, e2e tests, browser e2e, example tests, watch-mode checks, writing test fixtures, debugging local or CI test failures, validating code changes, or reproducing bugs from external projects.
Often used withbundle-dependency-prsupdate-library-template
MicrosoftSkillmicrosoft/vs-mef/.agents/skills/testing/SKILL.md
Provides guidance and instructions for writing, running and filtering tests.
Often used withbundle-dependency-prsupdate-library-template
liza-masSkillliza-mas/liza/skills/testing/SKILL.md
Test Protocol
Often used withbundle-dependency-prsupdate-library-template
zilliztechSkillzilliztech/knowhere/.agents/skills/testing/SKILL.md
Use when running unit tests, debugging test failures, or adding new test cases using Catch2 framework
Often used withbundle-dependency-prsupdate-library-template
alchemyplatformSkillalchemyplatform/aa-sdk/.agents/skills/testing/SKILL.md
Use when writing or modifying Vitest tests, `.vitest` setup, Anvil/Foundry or Rundler fixtures, per-package test config, or CI affected-test behavior.
Often used withbundle-dependency-prsupdate-library-template
s3s-projectSkills3s-project/s3s/.agents/skills/testing/SKILL.md
Add or run tests in this repository. Use when placing a new test, when a test target is not picked up, when the feature sets matter, or when an end-to-end suite is involved.
Often used withbundle-dependency-prsupdate-library-template
austintgriffithSkillaustintgriffith/ethskills/testing/SKILL.md
Use when writing or reviewing Foundry tests, deciding whether a suite is enough to deploy, or when a green run or a coverage number is offered as proof that a contract is safe. Covers fuzz, fork and invariant testing. Not for auditing source by reading it (`/security`, `/audit`).
Often used withbundle-dependency-prsupdate-library-template
grafanaSkillgrafana/skills/skills/grafana-cloud/testing/SKILL.md
Probe, load-test, and instrument frontends from Grafana Cloud. Covers Synthetic Monitoring (HTTP / DNS / TCP / Ping / Traceroute / Multihttp / k6-browser scripted checks from 20+ global probes, alert on `probe_success` + TLS-cert expiry), Grafana Cloud k6 (distributed load tests across AWS load-zones, scenarios, `http_req_duration` thresholds, CI integration via `grafana/k6-action`), and Frontend Observability with Faro Web SDK (RUM, Core Web Vitals, custom events, `pushError`, distributed-trace correlation). Use when checking website / API uptime from multiple regions, gating a release on a load test, watching for TLS-cert renewal, instrumenting a React/Vue app, tracking Core Web Vitals, or correlating frontend errors to backend traces — even when the user says "is my login flow up?", "monitor my API", "ping our endpoint every minute", "release-gate load test", "browser performance monitoring", "session replay", or "RUM" without naming Synthetic Monitoring / k6 / Faro.
Often used withbundle-dependency-prsupdate-library-template
MindrallySkillMindrally/skills/testing/SKILL.md
General testing best practices and guidelines for writing comprehensive, maintainable tests across different testing frameworks and languages.
Often used withbundle-dependency-prsupdate-library-template
NVIDIASkillNVIDIA/nvcf/src/uis/nvcf-ui/.claude/skills/testing/SKILL.md
Writing frontend tests for the nvcf-ui app — Vitest, Testing Library, MSW, and project-specific render helpers. Use when creating test files, writing component tests, setting up MSW handlers in tests, deciding which render helper to use, or when the user is adding or modifying a UI component and hasn't mentioned tests yet (tests are required). Covers TypeScript/React only — Go backend tests follow standard Go patterns.
Often used withbundle-dependency-prsupdate-library-template
iha2Skilliha2/superlite/skills/testing/SKILL.md
Use when implementing any feature or bugfix, before writing implementation code
Often used withbundle-dependency-prsupdate-library-template
ResgridSkillResgrid/Core/.agents/skills/testing/SKILL.md
Testing strategy for .NET 10 applications. Covers xUnit v3, WebApplicationFactory for integration tests, Testcontainers for real database testing, Verify for snapshot testing, and the AAA pattern. Load this skill when writing tests, setting up test infrastructure, reviewing test coverage, or when the user mentions "test", "xUnit", "WebApplicationFactory", "Testcontainers", "integration test", "unit test", "bUnit", "snapshot test", "Verify", "test coverage", "AAA pattern", "WireMock", or "FakeTimeProvider".
Often used withbundle-dependency-prsupdate-library-template
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.
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