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

SentrySkill

react-testing

getsentry/sentry/.agents/skills/react-testing/SKILL.md

Write and review React/TypeScript tests for Sentry's frontend using Jest and React Testing Library. Use when adding or editing tests in static/ (*.spec.tsx), writing component/hook tests, mocking API responses with MockApiClient, testing routing or network requests, or when asked to "write a frontend test", "add a React test", "test this component", or "fix a flaky RTL test".

zebbernSkill

idor-testing

zebbern/claude-code-guide/skills/idor-testing/SKILL.md

This skill should be used when the user asks to "test for insecure direct object references," "find IDOR vulnerabilities," "exploit broken access control," "enumerate user IDs or object references," or "bypass authorization to access other users' data." It provides comprehensive guidance for detecting, exploiting, and remediating IDOR vulnerabilities in web applications.

pulsejetSkill

unit-testing

pulsejet/memories/.agents/skills/unit-testing/SKILL.md

Run PHP unit tests with phpunit

xtdbSkill

xtdb-testing

xtdb/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.

compozySkill

testing-boss

compozy/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.

AnthropicSkill

webapp-testing

anthropics/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.

Often used withskill-share·intelligent-routing·artifacts-builder

artsySkill

eigen-testing

artsy/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 credentialsSkill

testing-skill

pydantic/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.

JetBrainsSkill

build-tools-add-test-federation-annotations-to-integration-tests

JetBrains/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).

MaterializeIncSkill

mz-test

MaterializeInc/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).

NVIDIASkill

mcore-testing

NVIDIA/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'.

JamieMasonSkill

testing-gaps

JamieMason/syncpack/.claude/skills/testing-gaps/SKILL.md

Run coverage, inspect results, and identify missing test scenarios for a given source file. Use when analysing test coverage or finding untested branches.

No other project uses it yet

xchacha20-poly1305Skill

husi-testing

xchacha20-poly1305/husi/.agents/skills/husi-testing/SKILL.md

Husi project's testing conventions. Use whenever adding, updating, or debugging tests under composeApp/ — ViewModels, updaters, ktx helpers, anything in commonTest/desktopTest. Also use when a piece of production code needs a DI seam to become testable (HTTP, DataStore, Libcore). Do not reach for mockk first or invent a new base class — consult this skill before writing the first test in a new file.

SupabaseSkill

studio-testing

supabase/supabase/.agents/skills/studio-testing/SKILL.md

Testing strategy for Supabase Studio. Use when selecting, writing,

amdReads credentialsSkill

gaia-testing

amd/gaia/.claude/skills/gaia-testing/SKILL.md

GAIA's multi-tier regression harness — runs unit, integration, and real-world (on-machine) tiers and brings back screenshots, logs, traces, planted-fact retrieval proof, and per-operation timing with anomaly flags, all collected to the local machine (no remote login needed to view). It carries GAIA's drivers (Agent UI, Agent UI MCP), exact commands, ports, and `gaia eval agent` baselines, and extends (does not replace) the generic `testing` skill. Fires when the user wants real-world / on-hardware proof, screenshots, or end-to-end evidence that a feature, agent, change, fix, or release actually works — not a quick 'is the app running' check (the `verify` skill) or an LLM-behaviour scorecard alone (`gaia eval agent`). Scales: 'run the unit tests' stays unit-only and skips the planning gate; 'test / validate / QA this feature or release' runs all applicable tiers with evidence.

No other project uses it yet

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.

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.

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.

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".

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.