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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JuliaPackagingSkillJuliaPackaging/Yggdrasil/.agents/skills/testing-jll/SKILL.md
How to test every Yggdrasil recipe before merging. Use before merging any new or changed recipe, and when running build_tarballs.jl with --deploy=local, --skip-build or --debug, loading a locally built JLL, or testing tarballs from CI artifacts.
zhao-wuyanSkillzhao-wuyan/ccw-command-explorer/.claude/skills/team-testing/SKILL.md
Unified team skill for testing team. Progressive test coverage through Generator-Critic loops, shared memory, and dynamic layer selection. Triggers on "team testing".
EyadkellehSkillEyadkelleh/awesome-claude-skills-security/skills/llm-testing/SKILL.md
Comprehensive LLM security testing prompts for bias detection, data leakage, alignment testing, and adversarial prompt resistance.
likweitanSkilllikweitan/abap-skills/skills/abap-unit-testing/SKILL.md
Help with ABAP Unit testing including test class setup, assertions, test doubles, mocking frameworks, dependency injection, CDS test environments, SQL test environments, RAP BO test doubles, and test fixtures. Use when users ask about ABAP unit tests, test classes, test methods, CL_ABAP_UNIT_ASSERT, test doubles, mocking, CDS test environment, SQL test environment, RAP testing, ABAP test injection, test seams, behavior-driven testing, TDD in ABAP, test isolation, or writing automated tests for ABAP code. Triggers include "write a unit test", "create test class", "mock a dependency", "test a CDS view", "test a RAP BO", "test double", "assertion", "test fixture", "test isolation", or "ABAP unit".
Infinite-Labs-AISkillInfinite-Labs-AI/infinite-skills/skills/ab-testing/SKILL.md
Use when turning a marketing, growth, CRO, pricing, onboarding, email, ad, or acquisition idea into a useful experiment or test plan.
Often used withfree-toolsmarketing-councilemails
owlchesterSkillowlchester/kanka/.agents/skills/pest-testing/SKILL.md
Use this skill for Pest PHP testing in Laravel projects only. Trigger whenever any test is being written, edited, fixed, or refactored — including fixing tests that broke after a code change, adding assertions, converting PHPUnit to Pest, adding datasets, and TDD workflows. Always activate when the user asks how to write something in Pest, mentions test files or directories (tests/Feature, tests/Unit) or architecture tests. Covers: test()/it()/expect() syntax, datasets, mocking, browser testing, arch(), Livewire component tests, RefreshDatabase, and all Pest 3 features. Do not use for editing factories, seeders, migrations, controllers, models, or non-test PHP code.
Often used withlivewire-developmenttailwindcss-developmentlaravel-best-practices
xtdbSkillxtdb/xtdb/.claude/skills/xtdb-testing/SKILL.md
XTDB-specific rules and mechanics for running tests — running the task yourself, delegating the failure text, the mid-run edit freeze, test tasks and filters, iteration counts, simulation-test coverage, diagnosing failures, and regenerating arrow-edn golden fixtures. Read this before running or delegating any test run in this repo.
compozySkillcompozy/compozy/.agents/skills/testing-boss/SKILL.md
Author or review software tests and LLM/agent evals; choose test placement and mocks, diagnose flaky CI, or repair brittle suites. Excludes unrelated code review, debugging, CI design, and production observability.
Steady18 mentions in 2 weeks
1 project uses a version of this
learntocloudSkilllearntocloud/linux-ctfs/.github/skills/ctf-testing/SKILL.md
Deploy and test Linux CTF challenges across cloud providers (AWS, Azure, GCP). Use when running basic tests without reboot or full tests with reboot for CTF setup, challenge validation, and release confidence.
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.
196 projects use a version of this
Often used withskill-shareintelligent-routingartifacts-builder
artsySkillartsy/eigen/.claude/skills/eigen-testing/SKILL.md
Write and maintain tests for Eigen, a React Native application using React Native Testing Library and Relay Test Utils. Use this skill when writing new tests, fixing failing tests, adding test coverage, updating existing tests, or when asked about testing best practices for Eigen. Triggers on requests like "write tests for this component", "add test coverage", "fix this test", "how should I test this", or any testing-related questions for the Eigen codebase.
No other project uses it yet
PydanticReads credentialsSkillpydantic/pydantic-ai/.claude/skills/testing-skill/SKILL.md
Record, rewrite, and debug VCR cassettes for HTTP recordings. Use when running tests with --record-mode, verifying cassette playback, or inspecting request/response bodies in YAML cassettes.
JetBrainsSkillJetBrains/kotlin/.claude/skills/build-tools-add-test-federation-annotations-to-integration-tests/SKILL.md
Annotate test classes in `kotlin-gradle-plugin-integration-tests` with Test Federation annotations (`@MustRunOnChangesInXYZ` / `@MustRunAlways`). Use this whenever the user asks to annotate, review, or fix Test Federation annotations on an integration test class, or to assess a test class for cross-domain dependencies under Test Federation (KT-87614).
loulanyueSkillloulanyue/awesome-claude-notes/skills/cpp-testing/SKILL.md
Use only when writing/updating/fixing C++ tests, configuring GoogleTest/CTest, diagnosing failing or flaky tests, or adding coverage/sanitizers.
loulanyueReads credentialsSkillloulanyue/awesome-claude-notes/skills/e2e-testing/SKILL.md
Playwright E2E testing patterns, Page Object Model, configuration, CI/CD integration, artifact management, and flaky test strategies.
Often used witheverything-claude-codeeverything-claude-code-conventionsbun-runtime
MaterializeIncSkillMaterializeInc/materialize/.agents/skills/mz-test/SKILL.md
Run tests + pick test framework in Materialize. Trigger: "run tests", "run testdrive", "run sqllogictest", "run mzcompose", "run cargo test", "run pgtest", "rewrite test results", "add a test", "reproduce a bug", "write a regression test", or mentions testing, testdrive, sqllogictest, mzcompose, pgtest, cargo test, nextest, flaky tests, test failures. Also "test this" or "how do I verify this works". Specifics: mz-platform-checks (upgrade/restart survival), mz-parallel-workload (concurrent stress), mz-limits-test (many objects).
idavidov13Reads credentialsSkillidavidov13/agentic-playwright/.agents/skills/api-testing/SKILL.md
Use when writing or updating an API spec under tests/**/api/**, planning coverage for an endpoint, building a response schema from the API contract, or deciding whether API setup/teardown becomes a helper fixture. Not for Zod syntax and type inference (see `type-safety`) or fixture mechanics (see `fixtures`).
NVIDIASkillNVIDIA/Megatron-LM/skills/mcore-testing/SKILL.md
Test system for Megatron-LM. Covers test layout, recipe YAML structure, adding and running unit and functional tests, golden values, marker filters, and CI parity. Use when adding or running a unit or functional test; understanding the test layout; writing a recipe YAML; downloading or updating golden values; reproducing a test failure locally; 'how do I add a test', 'run unit tests', 'pytest fails', 'test layout', 'golden values', 'recipe YAML', 'marker filter'.
fugaziSkillfugazi/test-automation-skills-agents/skills/api-testing/SKILL.md
Test REST and GraphQL endpoint contracts using Playwright request fixture (TypeScript) or REST Assured (Java). Use for standalone API tests covering schemas, auth, status/error handling, pagination, idempotency, rate limits, or contract checks; not for browser E2E specs. Keywords: REST, GraphQL, API contract, schema validation, REST Assured.
ag2aiReads credentialsSkillag2ai/build-with-ag2/.agents/skills/ag2-testing/SKILL.md
Test AG2 beta agents and tools without hitting a real LLM provider. Pass `TestConfig(...)` from `autogen.beta.testing` as the agent's config (or per-`ask`) to mock LLM responses, inject `ToolCallEvent`s to simulate tool execution, and assert success / error paths. Use when the user is writing pytest tests for an Agent or Tool.
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