agentleFS

Claude skills and agent skills

Skills real projects publish on GitHub, most starred first. Each one says what it will make an agent do before you copy it.

Best matches · from page 17Worked for most · soon
sgl-projectSkill

write-sglang-test

sgl-project/sglang/.agents/skills/write-sglang-test/SKILL.md

Guide for writing SGLang CI/UT tests. Covers CustomTestCase, CI registration, which tier (base, extra, nightly, weekly) and runner a test belongs to, server fixtures, model selection, mock testing, and test placement. Always read test/README.md for the full CI layout, how to run tests, and extra tips. Use when creating new tests, adding CI test cases, writing unit tests, moving a test between tiers, or when the user asks to add tests for SGLang features.

39ktodayReviewMountCreate a free account to mount
GoogleSkill

dev-testing

google/capsem/skills/dev-testing/SKILL.md

Capsem testing policy and workflow. Use whenever running or writing tests. For VM, hypervisor, frontend, or Python specifics see the dev-testing-* skills.

17916d agoReviewMountCreate a free account to mount
ncklrsSkill

ab-testing

ncklrs/claude-chrome-user-testing/skills/ab-testing/SKILL.md

Testing Skill Compare two URL variants with the same persona to determine which provides a better user experience. This skill guides the comparison logic and report generation. ## When

Often used withfree-toolsmarketing-councilemails

2010mo agoReviewMountCreate a free account to mount
Strategic-AutomationSkill

api-testing

Strategic-Automation/violin/skills/api-testing/SKILL.md

Test REST, GraphQL, SOAP, and WebSocket API surfaces.

15954d agoReviewMountCreate a free account to mount
TypeCellOSSkill

testing-skill

TypeCellOS/BlockNote/.claude/skills/testing-skill/SKILL.md

Instructions for writing, running, and updating unit/end-to-end tests. Should be used when prompted specifically to add tests for a given feature, bug, or regression.

Steady26 mentions in 2 weeks

1 project uses a version of this

10k54d agoReviewMountCreate a free account to mount
theexperiencecompanySkill

accurate-testing

theexperiencecompany/gaia/.agents/skills/accurate-testing/SKILL.md

Write adversarial test cases that break production code instead of producing false confidence. Use when writing, reviewing, or planning tests for any codebase. Triggers on: "write tests", "add test coverage", "test this function", "create unit tests", "integration tests", "fix flaky tests", "improve test coverage", "review test quality", "are these tests good", "test plan", "break this code", "find edge cases", or any task involving pytest, vitest, jest, or other test frameworks. Enforces the prime directive — a test that cannot fail is not a test — and prevents common AI testing pitfalls: over-mocking, testing frameworks instead of production code, fake implementations that bypass real logic, and assertion-free tests.

3272d agoReviewMountCreate a free account to mount
lichtblick-suiteSkill

unit-testing

lichtblick-suite/lichtblick/.github/skills/unit-testing/SKILL.md

Unit testing patterns, mock builder usage, and test data construction strategies for the Lichtblick monorepo.

1.2k5mo agoReviewMountCreate a free account to mount
The-OpenROAD-ProjectSkill

add-test

The-OpenROAD-Project/OpenROAD/.agents/skills/add-test/SKILL.md

Add integration or unit tests to an OpenROAD module. Handles the complete workflow: writing the Tcl/C++ test, generating golden files, and registering the test in Bazel. Use when asked to add tests, improve test coverage, create regression tests, or write unit tests for any OpenROAD module (ant, cts, dpl, drt, gpl, grt, mpl, odb, pad, pdn, psm, rcx, rsz, sta, stt, tap, upf, utl, etc.). Also triggers on: "add test", "write test", "test coverage", "missing tests", "create regression test", "add unit test".

3.3k8d agoReviewMountCreate a free account to mount
MicrosoftSkill

code-testing

microsoft/testfx/.agents/skills/code-testing/SKILL.md

ALWAYS USE for test work that requires changes: write, add, generate, repair, or strengthen tests for existing code in xUnit, MSTest, NUnit, pytest, Vitest/Jest, Go, or another framework. Includes regression cases, failing or flaky tests, coverage-driven additions, and audit-then-fix requests. Focused work stays direct; broad or multi-stage work invokes test-engineer. DO NOT USE for only running tests, analysis-only audits, framework/platform migrations, a test blocked on a missing production seam (testability-obstacle), or MSTest API/configuration corrections that do not design new cases (writing-mstest-tests). Within an active test-engineer pipeline, reuse supplied guidance and do not re-enter this skill.

1.1k37d agoReviewMountCreate a free account to mount
javierbreaSkill

unit-testing

javierbrea/eslint-plugin-boundaries/.agents/skills/unit-testing/SKILL.md

Complete or maximize unit test coverage for a specific TypeScript file in this repo. Use when: a test run is short of the 100% coverage threshold and you need to find and close the gap, or when deciding whether an uncovered branch is genuinely unreachable. For everyday test-writing conventions (AAA, mocking, placement, type safety), see .agents/rules/unit-testing.md instead — it loads automatically for any *.spec.ts file.

Steady36 mentions in 2 weeks

20 projects use a version of this

1k16d agoReviewMountCreate a free account to mount
AllThingsSmittySkill

ts-testing

AllThingsSmitty/proven-skills/skills/ts-testing/SKILL.md

TypeScript testing advisor. Always use this skill when writing tests in TypeScript, setting up Jest or Vitest with TypeScript, creating type-safe mocks, or writing type-level tests. Use when the user asks "how do I mock this in TypeScript", "my mock has the wrong type", "how do I test that a type is correct", "jest.fn doesn't match my interface", "how do I set up Jest with TypeScript", "how do I avoid as any in tests", or "how do I write a type-level test". Read this skill before writing any TypeScript tests or mocks.

140d agoReviewMountCreate a free account to mount
baturSkill

ts-testing

batur/ts-baseline-docs/.agents/skills/ts-testing/SKILL.md

Defines the TypeScript testing standard for AI coding and review. Use when adding, changing, or reviewing tests, test structure, Vitest, Playwright e2e, validation/error/PATCH/auth/security/tenant tests, fixtures, mocks/fakes, coverage, CI test commands, or any behavior that needs test protection.

14mo agoReviewMountCreate a free account to mount
feast-devSkill

feast-testing

feast-dev/feast/skills/feast-testing/SKILL.md

How to test and debug Feast — running targeted tests, writing unit tests for new components, debugging registry and online store issues, and inspecting live feature store state. Use when writing tests for a new feature, debugging a failing test, investigating a runtime error, or verifying that a change works correctly end-to-end.

Steady8 mentions in 2 weeks

No other project uses it yet

7.4k4mo agoReviewMountCreate a free account to mount
ngocsangyemSkill

mk:testing

ngocsangyem/MeowKit/.claude/skills/testing/SKILL.md

Use when writing tests, running validation scripts, or (in TDD mode) enforcing red-green-refactor cycle. Activates during Phase 2 (Test) and Phase 3 (Build). NOT for coverage gap mapping (see mk:nyquist); NOT for sprint contract negotiation (see mk:sprint-contract).

144mo agoReviewMountCreate a free account to mount
jabrenaSkill

321-frameworks-spring-boot-testing-unit-tests

jabrena/cursor-rules-java/skills/321-frameworks-spring-boot-testing-unit-tests/SKILL.md

Use when you need to write unit tests for Spring Boot applications — including pure unit tests with @ExtendWith(MockitoExtension.class) for @Service/@Component, slice tests with @WebMvcTest and @MockitoBean for controllers, @JsonTest for JSON serialization, parameterized tests with @CsvSource/@MethodSource, test profiles, and @TestConfiguration. For framework-agnostic Java use @131-java-testing-unit-testing. For integration tests use @322-frameworks-spring-boot-testing-integration-tests. This should trigger for requests such as Review Java code for Spring Boot unit tests; Apply best practices for Spring Boot unit tests in Java code; Write Mockito-first unit tests for Spring Boot services; Avoid unnecessary @SpringBootTest in Spring unit tests; Review Spring Boot slice-free unit test design. Part of Plinth Toolkit

4614mo agoReviewMountCreate a free account to mount
starkware-libsSkill

writing-tests

starkware-libs/cairo/.claude/skills/writing-tests/SKILL.md

Use when writing or changing tests in this repo, deciding what to test or where a test belongs, adding a regression test for a bug fix, reviewing the test portion of a PR, deciding which golden outputs to bless and reviewing the blessed diff, or adding a benchmark. Trigger phrases include "add a test", "write tests for", "is this covered", "does this need a test", "review the tests here", "which layer should this test go in". Also use for the mechanics of the golden framework itself — the //! > file format, creating test_file_test! runners, or how CAIRO_FIX_TESTS works (covered in references/golden-framework.md).

1.9k2mo agoReviewMountCreate a free account to mount
fullstackheroSkill

testing-guide

fullstackhero/dotnet-starter-kit/.agents/skills/testing-guide/SKILL.md

Write tests for an FSH feature — xUnit + Shouldly + NSubstitute + AutoFixture, with naming and AAA conventions. Use when adding unit/handler/validator/entity tests. Full rules in .agents/rules/testing.md + integration-testing.md.

6.9k12d agoReviewMountCreate a free account to mount
amElnagdySkill

test-guard

amElnagdy/guard-skills/skills/test-guard/SKILL.md

Review generated or changed test code against universal testing rules before it ships. Best used reactively after an agent writes, edits, generates, or refactors tests, before presenting, committing, or merging them. Use for pytest (test_*.py, *_test.py), PHPUnit/Pest (*Test.php), Jest/Vitest (*.test.ts, *.spec.js), Go (*_test.go), files under tests/, __tests__/, or spec/, and review requests like 'write tests for X', 'add tests', 'test this', 'review these tests', or PR diffs containing tests. Can also guide test writing when explicitly invoked before the work. This skill is the quality gate that prevents AI-generated test bloat. DO NOT USE for production or implementation code review (use clean-code-guard), CI or test-runner configuration, running or debugging tests, or general architecture discussion.

1.3k4mo agoReviewMountCreate a free account to mount
MRCalderon3DSkill

web-testing

MRCalderon3D/everything-game-dev-code/skills/web/web-testing/SKILL.md

Test browser games with fast unit tests for pure logic, headless smoke tests, and a deliberate browser matrix.

1058mo agoReviewMountCreate a free account to mount
CLAUDE.md vs AGENTS.md

About skills

What is a Claude skill?

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.

How do I use one I find here?

Copy the folder into your project's .claude/skills/ directory, or into your own skills folder to use it everywhere.

What do the warnings mean?

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.

Which skills worked for people?

Open a skill to see its discussion. Reports from people and their agents are coming.