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

pgplexSkill

run_tests

pgplex/pgschema/.claude/skills/run_tests/SKILL.md

Run pgschema automated tests (go test) to validate diff logic, plan generation, and dump functionality using test fixtures. Use this skill whenever you need to run tests, debug test failures, add new test cases, regenerate expected outputs, or validate changes across PostgreSQL versions 14-18.

amplifthqSkill

fixing-flaky-tests

amplifthq/openmeld/.agents/skills/fixing-flaky-tests/SKILL.md

Guides an agent through reproducing, root-causing, fixing, and validating flaky tests in the PostHog monorepo. Use when a test fails intermittently in CI but passes on rerun or locally, when `hogli ci:insights` or the debugging-ci-failures skill classifies a failure as a flaky test, when given a GitHub Actions URL for a flaky job, when asked to check Trunk Flaky Tests for a test, PR, or master, or when asked to deflake, stabilize, or fix a flaky Jest, pytest, or Playwright test. Core discipline: reproduce locally before changing anything, fix the root cause (never mask it with sleeps, retries, or bigger timeouts), and prove the fix with an N-run validation loop sized to the observed failure rate. Stabilizing is not the only valid outcome — the skill also gates whether the test should exist, so deleting a test that catches nothing real, or re-leveling one that flakes because of the level it runs at, are first-class endings.

mastra-aiSkill

real-world-testing

mastra-ai/mastra/.agents/skills/real-world-testing/SKILL.md

Use when fixing a bug, writing or reviewing tests, or adding a regression test anywhere in Mastra (core, storage adapters, server adapters, memory, client SDKs, integrations). Especially use before mocking a class, model, storage, or server; before writing a unit test that only checks wiring or that a value is defined; before writing a one-off test for a single engine, adapter, or code path; before adding a recorded (__recordings__) fixture; or when a test passes but you aren't sure it reproduces the real failure.

No other project uses it yet

nearaiSkill

ironclaw-reborn-testing

nearai/ironclaw/.claude/skills/ironclaw-reborn-testing/SKILL.md

Use when adding or reviewing tests for Reborn behavior — choosing a test tier, covering a bug fix, testing model/tool-choice behavior, touching tests/integration or tests/fixtures/llm_traces, or when a test needs Postgres, Docker, or a live LLM.

adenhqSkill

test-reporting

adenhq/hive/.claude/skills/test-reporting/SKILL.md

Integration Test Reporting Skill Run the Level 2 dummy agent integration test suite and produce a detailed HTML report with per-test input → outcome analysis. ## Trigger User wants

tldrawSkill

write-e2e-tests

tldraw/tldraw/skills/write-e2e-tests/SKILL.md

Writing Playwright E2E tests for tldraw. Use when creating browser tests, testing UI interactions, or adding E2E coverage in apps/examples/e2e or apps/dotcom/client/e2e.

cloudposseSkill

field-test

cloudposse/atmos/.claude/skills/field-test/SKILL.md

Hands-on manual DX test pass of a feature or CLI command: read the real implementation and tests, hypothesize plausible user misunderstandings and misuse automated tests don't cover, build durable fixtures, execute for real against real state, and report ranked findings. Investigation only — never fixes anything found. Defaults to testing whatever the current branch changed vs its base branch when no explicit target is given. Invoke on explicit requests like 'field test X' / 'do a DX test pass on X' / 'find vibe-coded slop in X' / 'field test this branch'.

MistralSkill

write-vibe-tests

mistralai/mistral-vibe/.vibe/skills/write-vibe-tests/SKILL.md

Write or refactor Mistral Vibe tests with proper decoupling. Use when adding behavior coverage, testing ports/adapters, replacing brittle mocks, creating fakes, adding characterization tests before refactors, or changing tests under tests/ for vibe/core, vibe/app_server, vibe/acp, tools, config, sessions, skills, hooks, MCP, or setup.

No other project uses it yet

ag-ui-protocolSkill

agui-dotnet-cross-language-tests

ag-ui-protocol/ag-ui/.github/skills/agui-dotnet-cross-language-tests/SKILL.md

Author cross-language interop tests that verify the AG-UI .NET SDK is wire-compatible with the TypeScript SDK — a Vitest TS client driving a C# CrossLanguage.TestServer over HTTP, both directions, including protobuf byte-parity against @ag-ui/proto. USE FOR: adding or modifying cross-language interop coverage, CrossLanguage.TestServer routes, the CrossLanguage.Vitest suite, protobuf wire parity tests, TS-client-to-C#-server or C#-client-to-TS-server scenarios. DO NOT USE FOR: .NET-only unit tests (use agui-dotnet-unit-tests), ASP.NET Core hosting integration tests (use agui-dotnet-integration-tests).

No other project uses it yet

zebbernSkill

test-suite-architect

zebbern/claude-code-guide/skills/test-suite-architect/SKILL.md

This skill should be used when establishing comprehensive QA testing processes for any software project. Use when creating test strategies, writing test cases following Google Testing Standards, executing test plans, tracking bugs with P0-P4 classification, calculating quality metrics, or generating progress reports. Includes autonomous execution capability via master prompts and complete documentation templates for third-party QA team handoffs. Implements OWASP security testing and achieves 90% coverage targets.

DetachHeadSkill

testing-internals

DetachHead/rebased/.agents/skills/testing-internals/SKILL.md

Debug IntelliJ `tests.cmd` execution, discovery, and runner internals.

DetachHeadSkill

testing-internals

DetachHead/rebased/.claude/skills/testing-internals/SKILL.md

Debug IntelliJ `tests.cmd` execution, discovery, and runner internals.

MicrosoftSkill

dashboard-testing

microsoft/aspire/.agents/skills/dashboard-testing/SKILL.md

Guide for writing tests for the Aspire Dashboard. Use this when asked to create, modify, or debug dashboard unit tests or Blazor component tests.

anonaddySkill

testing-best-practices

anonaddy/anonaddy/.cursor/skills/testing-best-practices/SKILL.md

Laravel test design and review. Use when selecting coverage, naming or structuring tests, choosing assertions or test data, isolating dependencies, testing HTTP or security boundaries, improving suite performance, or reviewing test value. Use framework guidance or search-docs for Pest and PHPUnit syntax.

Often used withinfer-conventions·configuring-horizon·ai-sdk-development

GoogleSkill

syzlang-vm-testing

google/syzkaller/.agents/skills/syzlang-vm-testing/SKILL.md

Verify syzkaller syscall descriptions (sys/linux/*.txt) and seed programs (sys/linux/test/*) inside a QEMU VM using syz-manager -mode run-tests, syzbot buildroot images, and kernel dynamic_debug/tracing.

stellarSkill

running-tests

stellar/stellar-core/.claude/skills/running-tests/SKILL.md

running tests at various levels from smoke tests to full suite to randomized tests

moltbotSkill

test-audit

moltbot/clawdbot/.agents/skills/test-audit/SKILL.md

Writing/changing/reviewing/sweeping tests: reject duplicate or implementation-coupled proof; remove test-only production seams.

InfisicalSkill

testing-secrets-ui

Infisical/infisical/.agents/skills/testing-secrets-ui/SKILL.md

Test the Infisical secrets management UI end-to-end. Use when verifying secret CRUD operations, URL encoding fixes, or frontend API layer changes.

No other project uses it yet

AarononthewebSkill

snapshot-testing

Aaronontheweb/dotnet-skills/skills/snapshot-testing/SKILL.md

Use Verify for snapshot testing in .NET. Approve API surfaces, HTTP responses, rendered emails, and serialized outputs. Detect unintended changes through human-reviewed baseline files.

dubzzzSkill

javascript-testing-expert

dubzzz/fast-check/skills/javascript-testing-expert/SKILL.md

Expert-level JavaScript testing skill focused on writing high-quality tests that find bugs, serve as documentation, and prevent regressions. Advocates for property-based testing with fast-check and protects against indeterministic code in tests. Does not cover black-box e2e testing.