Skills real projects publish on GitHub, most starred first. Each one says what it will make an agent do before you copy it.
affaan-mSkillaffaan-m/ECC/.agents/skills/e2e-testing/SKILL.md
Playwright E2E testing patterns, Page Object Model, configuration, CI/CD integration, artifact management, and flaky test strategies. Use when writing Playwright tests, structuring page objects, or fixing flaky E2E runs in CI.
AnthropicSkillanthropics/skills/skills/webapp-testing/SKILL.md
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.
SupabaseSkillsupabase/supabase/.agents/skills/studio-testing/SKILL.md
Testing strategy for Supabase Studio. Use when writing tests, deciding
langgeniusSkilllanggenius/dify/.agents/skills/frontend-testing/SKILL.md
Use when writing or changing Vitest or React Testing Library tests under `web/` or `packages/dify-ui/`, or when the user explicitly requests frontend test strategy, including evaluation of an existing strategy. Do not use for frontend code-review-only requests, general testability discussion, Python tests, or Cucumber/Playwright E2E.
OpenAISkillopenai/codex/.codex/skills/remote-tests/SKILL.md
Testing against remote executors in integration tests.
Significant-GravitasSkillSignificant-Gravitas/AutoGPT/.claude/skills/write-frontend-tests/SKILL.md
Analyze the current branch diff against dev, plan integration tests for changed frontend pages/components, and write them. TRIGGER when user asks to write frontend tests, add test coverage, or 'write tests for my changes'.
Significant-GravitasSkillSignificant-Gravitas/AutoGPT/.claude/skills/pr-test/SKILL.md
E2E manual testing of PRs/branches using docker compose, agent-browser, and API calls. TRIGGER when user asks to manually test a PR, test a feature end-to-end, or run integration tests against a running system.
MicrosoftSkillmicrosoft/vscode/.github/skills/smoke-tests/SKILL.md
Use when running VS Code smoke tests or working on smoke-test CI steps. Covers npm run smoketest / smoketest-no-compile, grep filtering tests, and a temporary repeat-loop technique for tracking down flaky smoke tests in CI.
VercelSkillvercel/next.js/.agents/skills/gate-tests/SKILL.md
How to use the `@gate` / `@force-gate` test directives instead of `it.skip` or fake-green skip patterns. Use when a test is known-failing under some test-matrix dimension (dev mode, a bundler, an experimental flag like cacheComponents), when converting `if (isNextDev) return` guards or env-var `describe.skip` branches, when adding a condition to test/lib/gate/conditions.ts, or when keying a fixture's experimental flag on a __NEXT_TEST_AXIS letter. Covers directive choice, condition tiers, the test-axis fixture pattern, pitfalls, and verification commands.
VercelSkillvercel/next.js/.agents/skills/deploy-release-test/SKILL.md
Validate a commit-specific Next.js preview package and manually trigger the entire Next.js deployment test suite through the test_e2e_deploy_release.yml GitHub Actions workflow. Use only when asked to run the full deploy test suite or this workflow specifically from an internal vercel/next.js PR branch. Do not use for focused deployment-test sanity checks; run the relevant tests locally with pnpm test-deploy instead. Covers resolving the latest branch SHA, waiting for vercel-packages, preserving default workflow inputs, dispatching the workflow, and verifying the run.
MicrosoftSkillmicrosoft/vscode/.github/skills/integration-tests/SKILL.md
Use when running integration tests in the VS Code repo. Covers scripts/test-integration.sh (macOS/Linux) and scripts/test-integration.bat (Windows), their supported arguments for filtering, and the difference between node.js integration tests and extension host tests.
OpenAISkillopenai/codex/.codex/skills/code-review-testing/SKILL.md
Test authoring guidance
MicrosoftSkillmicrosoft/TypeScript/.github/skills/compiler-and-fourslash-tests/SKILL.md
How to write, run, and debug compiler tests and fourslash (LSP) tests in the TypeScript repository. Covers test file formats, directives, markers, baseline management, and the fourslash verification API.
MicrosoftSkillmicrosoft/PowerToys/.github/skills/ui-tests-migration/SKILL.md
Create, migrate, and stabilize PowerToys UI tests with Microsoft.PowerToys.UITest.Next and winappcli, through local VM success, commit/push, and CI validation. Use for ports, new UITest projects, flaky CI tests, persistent Hyper-V validation, Settings IPC authentication/test signing, Explorer/Shell selection, preview handlers, thumbnail providers, hotkey activation, stateful process lifecycle, composed WinUI/WebView visual baselines, or foreground failures. Covers APIs, scaffolding, test design, diagnostics, and the required handoff to ui-tests-pipeline-ci. Keywords: UI test, UITests, UITestAutomation.Next, winappcli, WinAppDriver, Selenium, Settings IPC, not-microsoft-signed, Authenticode, local VM, Hyper-V, checkpoint, migrate, flaky, CI stability, Explorer, Shell extension, WebView2.
OpenAISkillopenai/codex/.codex/skills/test-tui/SKILL.md
Guide for testing Codex TUI interactively
MicrosoftSkillmicrosoft/vscode/.github/skills/unit-tests/SKILL.md
Use when running unit tests in the VS Code repo. Covers the runTests tool, scripts/test.sh (macOS/Linux) and scripts/test.bat (Windows), and their supported arguments for filtering, globbing, and debugging tests.
DeepSeekSkilldeepseek-ai/deepseek-harness/.agents/skills/dsh-ci-test-reliability/SKILL.md
Design, review, and diagnose DeepSeek Harness tests and fixtures that can fail nondeterministically under CI concurrency, shared host resources, clocks, process-global state, subprocesses, network listeners, or asynchronous teardown. Use when adding or changing tests with those risks, investigating flaky CI, or reviewing test isolation; use dsh-pre-push-checks separately to select outgoing commands.
NousResearchSkillNousResearch/hermes-agent/skills/software-development/test-driven-development/SKILL.md
TDD: enforce RED-GREEN-REFACTOR, tests before code.
MicrosoftSkillmicrosoft/vscode/.github/skills/agent-host-e2e-tests/SKILL.md
Use when writing, recording, updating, validating, or troubleshooting Agent Host end-to-end and real-provider integration tests under src/vs/platform/agentHost/test/node/e2e and providerIntegration. Covers adding a cross-provider test, re-recording fixtures after an SDK bump, required cross-platform Azure validation, gating non-deterministic or platform-specific tests, and diagnosing replay cache misses.
SupabaseSkillsupabase/supabase/.agents/skills/studio-e2e-tests/SKILL.md
Write and run Playwright E2E tests for Supabase Studio (e2e/studio).
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.
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