One search for your own team's files and the public ecosystem. See how real projects write their agent instructions, and bring the good ideas home.
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'.
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/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.
NousResearchSkillNousResearch/hermes-agent/skills/software-development/test-driven-development/SKILL.md
TDD: enforce RED-GREEN-REFACTOR, tests before code.
SupabaseSkillsupabase/supabase/.agents/skills/studio-e2e-tests/SKILL.md
Write and run Playwright E2E tests for Supabase Studio (e2e/studio).
SupabaseSkillsupabase/supabase/.agents/skills/vitest/SKILL.md
Vitest API and config reference (Jest-compatible) — mocking with vi.*, spies, fake timers, coverage configuration, fixtures, snapshots, and test filtering. Use for Vitest API and configuration questions anywhere in the monorepo; for Studio-specific test strategy and component-test setup, start with studio-testing and studio-mock-api-tests.
MicrosoftSkillmicrosoft/vscode/.github/skills/flaky-smoke-tests/SKILL.md
Diagnose intermittent VS Code Electron smoke-test failures from the Azure DevOps Flaky Smoke Tests pipeline (definition 700). Covers finding failed iterations, downloading task logs and platform artifacts with Azure CLI, correlating cumulative runner logs, tracing the introducing commit, and queueing focused validation runs.
MicrosoftSkillmicrosoft/PowerToys/.github/skills/ui-tests-local-vm/SKILL.md
Run PowerToys UITest.Next suites in persistent Hyper-V VMs over PowerShell Direct. Validate full default and constrained suites on Windows 10 and Windows 11, plus applicable ARM64 guests, then automatically hand implementation tasks to ui-tests-pipeline-ci for commit/push and CI validation. Local green is not end-to-end completion. Use for agentic UI-test iteration, reusable standard-user desktops, payload staging, evidence export, VM customization, clean baselines, or hosts without nested virtualization. Keywords: Hyper-V, local VM, virtual machine, PowerShell Direct, Copy-VMFile, VMBus, checkpoint, unattend, autounattend, ISO, Windows 10 LTSC, Windows 11, ARM64, Windows on ARM, UI tests, UITest.Next, winappcli, TRX, CI handoff.
obraSkillobra/superpowers/skills/test-driven-development/SKILL.md
Use when implementing any feature or bugfix, before writing implementation code
MicrosoftSkillmicrosoft/PowerToys/.github/skills/ui-tests-pipeline-ci/SKILL.md
Microsoft FTE-only completion workflow for PowerToys UI-test implementation: automatically continue after successful local VM suites, commit and push scoped changes, queue CI, wait synchronously, and stabilize through Azure CLI and Azure DevOps REST APIs. No separate push/run-CI request is needed for create, migrate, or stabilize tasks unless the user limited scope. Also use for explicit UITests CI, setup preflight, 401/403 diagnosis, build reuse, recordings/artifacts, and the three-run limit. Keywords: FTE, az, Azure CLI, Azure DevOps, pipeline, UI Test Automation, UITests CI, commit, push, local-to-CI handoff, buildNow, specificBuildId, uiTestModules, CI flake.
Plain text files in a repository that tell a coding agent how the project works: commands to run, conventions to follow and things to avoid. CLAUDE.md, AGENTS.md, cursor rules and skills are the common kinds.
CLAUDE.md is read by Claude Code. AGENTS.md is an open format that Codex, Cursor and other agents read. Many projects keep one and point the other at it.
A folder with a SKILL.md that describes one capability, such as filling PDFs or reviewing code. The agent loads it only when the task calls for it.
Your agents already can, over MCP, limited to the files you're allowed to read. Searching them from this page is coming.
