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Find the best CLAUDE.md, AGENTS.md and Claude skills

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.

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VercelSkill

deploy-release-test

vercel/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.

Steady2 mentions in 2 weeks

No other project uses it yet

143k6mo agoReviewMountCreate a free account to mount
jokob-skSkill

netalertx-testing-workflow

jokob-sk/NetAlertX/.github/skills/testing-workflow/SKILL.md

Run and debug tests in the NetAlertX devcontainer. Use this when asked to run tests, check test failures, debug failing tests, or execute pytest.

7.4k35d agoReviewMountCreate a free account to mount
noir-langSkill

noir-ssa-tests

noir-lang/noir/.claude/skills/noir-ssa-tests/SKILL.md

Guide for writing SSA pass unit tests in noirc_evaluator. Use when adding, writing, or reviewing tests for an SSA optimization pass — regression tests for miscompilations, no-op tests, snapshot tests of pass output, or tests that must prove a pass preserves execution semantics.

Steady10 mentions in 2 weeks

No other project uses it yet

1.4k2mo agoReviewMountCreate a free account to mount
dotnetSkill

write-ui-tests

dotnet/maui/.github/skills/write-ui-tests/SKILL.md

Creates UI tests for a GitHub issue and verifies they reproduce the bug. Iterates until tests actually fail (proving they catch the issue). Use when PR lacks tests or tests need to be created for an issue.

23k16d agoReviewMountCreate a free account to mount
tt-a1iSkill

test-value

tt-a1i/archify/.agents/skills/test-value/SKILL.md

Improve test value and feedback cost when auditing slow, flaky, redundant or brittle tests; choosing tests during implementation; or reviewing test changes before a commit or PR. Keep ordinary implementation and pre-commit use scoped to the affected behavior, not a repository-wide audit.

Steady14 mentions in 2 weeks

1 project uses a version of this

92k33d agoReviewMountCreate a free account to mount
DolibarrSkill

skill-doli-test-hurl

Dolibarr/dolibarr/.agents/skills/skill-doli-test-hurl/SKILL.md

Create and maintain Hurl tests for Dolibarr ERP/CRM. Use when asked to create, write, or fix hurl tests for Dolibarr, or when working with test/hurl directory. Covers Dolibarr-specific conventions for hurl testing including authentication, test file naming, and test structure.

No other project uses it yet

7.8k17d agoReviewMountCreate a free account to mount
BelphemurSkill

Feature test authoring

Belphemur/SoundSwitch/.agents/skills/feature-test-authoring/SKILL.md

Author a per-feature testing layer for a SoundSwitch feature — unit fixtures, a tools/Test-<Feature>.ps1 runner, an optional end-to-end script, and its own <feature>-testing skill doc — following the proven mute-target pattern. Use this when adding test coverage for a feature, creating Test-<Feature>.ps1, making an end-to-end test for a feature, or writing a feature testing skill.

3.5k11d agoReviewMountCreate a free account to mount
sanity-ioSkill

playwright-best-practices

sanity-io/sanity/.agents/skills/playwright-best-practices/SKILL.md

Use when writing Playwright tests, fixing flaky tests, debugging failures, implementing Page Object Model, configuring CI/CD, optimizing performance, mocking APIs, handling authentication or OAuth, testing accessibility (axe-core), file uploads/downloads, date/time mocking, WebSockets, geolocation, permissions, multi-tab/popup flows, mobile/responsive layouts, touch gestures, GraphQL, error handling, offline mode, multi-user collaboration, third-party services (payments, email verification), console error monitoring, global setup/teardown, test annotations (skip, fixme, slow), test tags (@smoke, @fast, @critical, filtering with --grep), project dependencies, security testing (XSS, CSRF, auth), performance budgets (Web Vitals, Lighthouse), iframes, component testing, canvas/WebGL, service workers/PWA, test coverage, i18n/localization, Electron apps, or browser extension testing. Covers E2E, component, API, visual, accessibility, security, Electron, and extension testing.

Often used withnodejs-backend-patternsaccessibility

6.4k11d agoReviewMountCreate a free account to mount
dbeaverSkill

cloudbeaver-frontend-tests

dbeaver/cloudbeaver/.agents/skills/cloudbeaver-frontend-tests/SKILL.md

Add tests, write tests, or test a file in the CloudBeaver frontend. Use for any webapp core or plugin test request, especially when the package is missing Vitest scripts, dependencies, TypeScript references, DOM or DI setup, mocks, or previously disabled tests.

No other project uses it yet

5.2k10d agoReviewMountCreate a free account to mount
MicrosoftSkill

add-test

microsoft/verona/.agents/skills/add-test/SKILL.md

Create a new Verona compiler test case. Use when the user wants to add a test, create a test, or scaffold a test for the compiler.

3.7k3mo agoReviewMountCreate a free account to mount
MicrosoftSkill

add-test

microsoft/verona/.claude/skills/add-test/SKILL.md

Create a new Verona compiler test case. Use when the user wants to add a test, create a test, or scaffold a test for the compiler.

3.7k3mo agoReviewMountCreate a free account to mount
NVIDIASkill

test

NVIDIA/TensorRT/tools/Polygraphy/.agents/skills/test/SKILL.md

Run Polygraphy tests with the correct environment setup. Activates when asked to run tests, run the test suite, or run a specific test file. Also use this proactively after making code changes — e.g. after a refactor, bug fix, or any edit that could affect runtime behaviour — to verify nothing is broken before committing.

13k5mo agoReviewMountCreate a free account to mount
dotnetSkill

integration-test-analysis

dotnet/roslyn/.github/skills/integration-test-analysis/SKILL.md

Investigate Visual Studio integration test failures from Azure DevOps builds. Use when investigating integration test timeouts, crashes, or failures in the roslyn-integration-CI pipeline. Also use when asked "why are integration tests failing", "integration test timeout", "VS integration tests", or given AzDO build URLs from the roslyn-integration-CI pipeline.

21k8mo agoReviewMountCreate a free account to mount
NVIDIA-NeMoSkill

recorded-tests

NVIDIA-NeMo/Guardrails/.agents/skills/recorded-tests/SKILL.md

Decides when a code change requires a recorded/VCR test, whether a test belongs in tests/recorded/ or the plain unit suite under tests/, and how to structure it in either place. Use when adding, reviewing, or relocating tests that involve LLM calls, streaming, cassettes, snapshots, or provider traffic, and when changing provider clients, public API output shapes, or model-calling rails. Trigger keywords - recorded test, cassette, VCR, replay, snapshot test, tests/recorded, record-cassettes, fake cassette, TestChat, FakeLLMModel.

Steady10 mentions in 2 weeks

No other project uses it yet

7.5k17d agoReviewMountCreate a free account to mount
DonchitosSkill

test-setup

Donchitos/Claude-Code-Game-Studios/.claude/skills/test-setup/SKILL.md

Scaffold the test framework and CI — tests/ directory, engine test runner, GitHub Actions workflow. Once, before the first sprint.

Steady8 mentions in 2 weeks

11 projects use a version of this

27k27d agoReviewMountCreate a free account to mount
simstudioaiSkill

test-audit

simstudioai/sim/.agents/skills/test-audit/SKILL.md

Invoke whenever writing, changing, reviewing, or sweeping tests. Authoring gate for new tests, plus an audit workflow for low-value, implementation-coupled, or duplicative tests and the test-only production seams they demand.

Cooling47 mentions in 2 weeks

80 projects use a version of this

30k9d agoReviewMountCreate a free account to mount
igorescodroSkill

write-ui-tests

igorescodro/alkaa/.claude/skills/write-ui-tests/SKILL.md

Use when writing or modifying UI/Compose instrumented tests in the Alkaa project — triggers on tasks like "add a UI test", "test this composable", "add instrumented test", "test this screen behavior".

1.6k8mo agoReviewMountCreate a free account to mount
chattocorpSkill

writing-tests

chattocorp/chatto/.agents/skills/writing-tests/SKILL.md

Instructions and hints for writing tests.

2.9k13d agoReviewMountCreate a free account to mount
CLAUDE.md vs AGENTS.md

Agent instruction files

What are agent instruction files?

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 or AGENTS.md?

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.

What is a skill?

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.

Can I search my own team's files too?

Your agents already can, over MCP, limited to the files you're allowed to read. Searching them from this page is coming.