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Claude Code Testing plugins and skills

Flowy lists 62 plugins in the Testing category for Claude Code. test generation, TDD, QA, coverage, e2e, linting, static analysis Every listing shows what is inside before you install, who built it, and whether it is Auto-invoked, meaning a FLOW.md router fires the right skill as you prompt instead of leaving them dormant.

playwright
Plugin

playwright

Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.

8 skills
@microsoft@microsoftView Plugin
grafana
Plugin

grafana

The open and composable observability and data visualization platform. Visualize metrics, logs, and traces from multiple sources like Prometheus, Loki, Elasticsearch, InfluxDB, Postgres and many more.

3 skills
@grafana@grafanaView Plugin
promptfoo
Plugin

promptfoo

promptfoo is a CLI and library for evaluating and red-teaming LLM-based apps. Stop using trial-and-error... start shipping secure, reliable agents Website · Getting Started · Red Teaming · Documentation · Discord Promptfoo is now part of OpenAI.

6 skills
@promptfoo@promptfooView Plugin
deepeval
Plugin

deepeval

📐 Large variety of ready-to-use LLM eval metrics (all with explanations) powered by ANY LLM of your choice, statistical methods, or NLP models that run locally on your machine covering all use cases: Custom, All-Purpose Metrics: JevEval — a custom metric

3 skills
@confident-ai@confident-aiView Plugin
playwright-cli
Plugin

playwright-cli

Playwright CLI with SKILLS

2 skills
@microsoft@microsoftView Plugin
agent-device
Plugin

agent-device

Mobile app automation and verification for AI coding agents. Give coding agents a live app feedback loop through a CLI, built-in MCP server, or typed Node.js API. Let your coding agent verify its changes in the running app.

4 skills
@callstackincubator@callstackincubatorView Plugin
expect
Plugin

expect

Expect tests your agent's code in a real browser

@millionco@millioncoView Plugin
vibium
Plugin

vibium

The verification layer for coding agents. Vibium gives AI agents the tools they need to check their work. Install the browser skill and your agent can navigate pages, fill forms, click buttons, and take screenshots — all through simple CLI commands.

2 skills
@vibiumdev@vibiumdevView Plugin
tdd-guard
Plugin

tdd-guard

TDD Guard grew into Probity: the same TDD enforcement, now for Claude Code, Codex, and GitHub Copilot CLI, with more reliable validation and no test reporters to set up. New projects should start there.

1 skill
@nizos@nizosView Plugin
vortex
Plugin

vortex

Vortex Development

2 skills
@nexus-mods@nexus-modsView Plugin
crabbox
Plugin

crabbox

Crabbox runs your repository's commands on remote machines, existing SSH hosts, and local containers. Keep editing locally; send your working tree to a box, stream the output, and get the command's exit code back.

2 skills
@openclaw@openclawView Plugin
app-store-preflight-skills
Plugin

app-store-preflight-sk…

An AI agent skill that runs pre-submission checks on your iOS/macOS project to catch common mistakes that lead to App Store rejection.

1 skill
@truongduy2611@truongduy2611View Plugin
kicad-happy
Auto-invokedPlugin

kicad-happy

AI-powered design review for KiCad. Analyzes schematics, PCB layouts, and Gerbers. Catches real bugs before you order boards.

11 skills
@aklofas@aklofasView Plugin
criterium
Plugin

criterium

Benchmarking library for clojure

1 skill
@hugoduncan@hugoduncanView Plugin
paperjury
Plugin

paperjury

Pre-submission AI review stress-test for research papers. A Claude Code skill: review, verdict, revise, verify.

1 skill
skill-up
Plugin

skill-up

An evaluation and evolution tool for Agent Skills.

3 skills
@alibaba@alibabaView Plugin
agent-qa
Plugin

agent-qa

Open-source self-improving QA agent for software teams. A test harness with memory. Write tests in natural language for web and mobile. agent-qa learns from every run, adapts to UI changes, and catches regressions before you ship.

3 skills
@vostride@vostrideView Plugin
openjudge
Plugin

openjudge

OpenJudge: A Unified Framework for Holistic Evaluation and Quality Rewards

21 skills
@agentscope-ai@agentscope-aiView Plugin
old-coder
Plugin

old-coder

中文说明 → An old coder's strategy for the agent era: don't read the code — make it run the gauntlet. A skill that makes coding agents prove their work.

2 skills
@amazingang@amazingangView Plugin
skillgrade
Plugin

skillgrade

The easiest way to evaluate your Agent Skills. Tests that AI agents correctly discover and use your skills. See examples/ — superlint (simple) and angular-modern (TypeScript grader).

2 skills
@mgechev@mgechevView Plugin
lhtb
Plugin

lhtb

Long-Horizon Terminal-Bench is a 46-task benchmark for measuring how well LLM agents sustain useful work in a containerized terminal over hundreds of steps.

5 skills
@zli12321@zli12321View Plugin
bkit
Plugin

bkit

A Claude Code plugin that verifies AI-generated code against its own design specs. Three commands. Anyone — even someone vibe-coding for the first time — can ship robust, production-quality software.

44 skills
@popup-studio-ai@popup-studio-aiView Plugin
agentic-qe
Plugin

agentic-qe

AI-powered quality engineering agents that generate tests, find coverage gaps, detect flaky tests, and learn your codebase patterns — across 11 coding agent platforms.

119 skills
canary
Plugin

canary

QA harness built for Claude Code | E2E testing with screen recordings, console logs, network HARs, and Playwright traces

5 skills
@0xnyn@0xnynView Plugin
swift-testing-agent-skill
Plugin

swift-testing-agent-sk…

Swift Testing agent skill for Claude Code, Codex, and other AI tools.

1 skill
@twostraws@twostrawsView Plugin
accessibility-agents
Plugin

accessibility-agents

WCAG 2.2 AA enforcement for agentic coding, as a set of Agent Skills. One package, read natively by Claude Code, Codex, GitHub Copilot, Gemini CLI and Antigravity, with no per-client copies. Models forget accessibility while generating code.

108 skills
@community-access@community-accessView Plugin
flutter-skill
Plugin

flutter-skill

AI-powered E2E testing for 10 platforms. 253 MCP tools. Zero config. Works with Claude, Cursor, Windsurf, Copilot. Test Flutter, React Native, iOS, Android, Web, Electron, Tauri, KMP, .NET MAUI — all from natural language.

1 skill
@ai-dashboad@ai-dashboadView Plugin
testdino-hq-playwright-skill
Plugin

testdino-hq-playwright…

Production-tested Playwright guides for E2E, API, component, visual, accessibility, and security testing, plus CI/CD, CLI automation, trace-report debugging, page objects, and migration. 70 guides with TypeScript and JavaScript examples throughout.

1 skill
@testdino-hq@testdino-hqView Plugin
awizemann-harness
Plugin

awizemann-harness

macOS 14+ · Apple Silicon & Intel · ~12 MB awizemann.github.io/harness  ·  Wiki  ·  All releases A native macOS developer tool that drives an iOS Simulator, a macOS app, or a web app with an AI agent so you can run user tests — not

@awizemann@awizemannView Plugin
testdriverai
Plugin

testdriverai

Computer-Use SDK for E2E QA Testing

65 skills
@testdriverai@testdriveraiView Plugin
kane-cli
Plugin

kane-cli

The validation layer for AI coding agents. Natural-language web and mobile-app automation, plus requirements-to-coverage assurance, called from your CLI or IDE.

1 skill
@lambdatest@lambdatestView Plugin
test-automation-skills-agents
Auto-invokedPlugin

test-automation-skills…

A practical library of agents, instructions, and skills designed specifically for QA Automation Engineers, focusing on production-oriented solutions.

10 skills
@fugazi@fugaziView Plugin
distributed-testing-skills
Plugin

distributed-testing-sk…

**Two skills for AI coding agents that design and run claim-driven tests for distributed and stateful systems.** Together they produce a structured Markdown test plan and a findings report with 10-state verdicts and an explicit SUT / harness / checker /

2 skills
@shenli@shenliView Plugin
qaskills
Plugin

qaskills

QA Skills Directory QA Skills is a curated directory of testing-specific skills for AI coding agents (Claude Code, Cursor, Copilot, etc.).

13 skills
@pramoddutta@pramodduttaView Plugin
tokenburner
Plugin

tokenburner

A Claude Code skill that burns tokens on demand. Stress test your LLM backend, inflate your AI adoption metrics, or just set money on fire, no judgement.

1 skill
@lomnus-ai@lomnus-aiView Plugin
workersio-skills
Plugin

workersio-skills

Agent skills to find and fix software bugs

1 skill
@workersio@workersioView Plugin
workersio-spec
Plugin

workersio-spec

Agent skills to find and fix software bugs

1 skill
@workersio@workersioView Plugin
cross-request-master
Plugin

cross-request-master

面向 API 开发/测试的 Chrome 扩展:绕过 CORS 发请求、自动生成 cURL,并对 YApi「运行」页做增强(内嵌 cURL、路径参数 {param} 引导填写)。 本仓库包含生态内的多个子项目: packages/yapi-mcp — CLI / Skill(发布包名保持为 @leeguoo/yapi-mcp,MCP 配置作为兼容方案保留,不影响扩展打包) plugins/yapi-plugin — Cursor 与 Claude Code 插件(已从原独立仓库

1 skill
@leeguooooo@leeguoooooView Plugin
uuv-e2e-accessibility-test
Plugin

uuv-e2e-accessibility-…

Discovering your application by usecase validation Make test writing fast, understandable by any human understanding English or French.

@e2e-test-quest@e2e-test-questView Plugin
glance
Plugin

glance

AI-powered browser automation MCP server for Claude Code. Navigate, click, screenshot, test — all from your terminal.

1 skill
@debugbase@debugbaseView Plugin
atdd
Plugin

atdd

A methodology kit for engineering-led AI development — spec-driven, test-driven, charter-bound. ATDD + mutation testing + deterministic guardrails. AI agents do the typing. Engineers stay in charge of architecture, behavior contracts, and verification.

27 skills
@swingerman@swingermanView Plugin
coder-eval
Auto-invokedPlugin

coder-eval

Playwright for coding agents — one declarative test file, any agent runtime, a real sandbox, and a pass/fail gate in CI.

6 skills
@uipath@uipathView Plugin
swiftui-autotest-skill
Plugin

swiftui-autotest-skill

Open-source Agent Skills for automated visual testing and accessibility setup of iOS/SwiftUI applications using Claude Code's computer use.

2 skills
@yusufkaran@yusufkaranView Plugin
unity-coding-skills
Plugin

unity-coding-skills

A Claude Code plugin for Unity development that enables coding agents to work autonomously through a test-first workflow — writing reliable, maintainable tests before production code, then iterating to completion without constant oversight.

10 skills
@nowsprinting@nowsprintingView Plugin
chain-of-verification
Plugin

chain-of-verification

A Claude Code plugin that catches bugs in AI-generated code by verifying against requirements, not implementation.

1 skill
@vertti@verttiView Plugin
rashomon
Plugin

rashomon

Measure prompt and skill improvements with blind A/B comparison.

5 skills
@shinpr@shinprView Plugin
e2e-testing
Plugin

e2e-testing

A set of 8 global skills for Claude Code that enforce disciplined, test-driven agentic development. Install once, use in any project.

9 skills
@burhankhatri@burhankhatriView Plugin
polygraph
Plugin

polygraph

Your tests check the paths you thought of. Polygraph checks the ones you didn't.

7 skills
@cognitive-fab@cognitive-fabView Plugin

FAQ

What are the best Claude Code Testing plugins?
Flowy lists 62 plugins for Testing, ranked by fit and signal rather than raw install count. Open any listing to read every skill in full before you install it.
Do these Testing skills run automatically?
The Auto-invoked ones do. They ship a FLOW.md router and a hook, so Claude Code loads the matching skill as you prompt. Indexed listings install normally and you invoke them yourself.
How does Flowy decide a plugin is a Testing plugin?
The tag is derived from the plugin's own content, its skill names, descriptions, README and file types, not from a tag someone typed. A plugin appears here only when its real content matches.
Are these Testing plugins free?
Yes. Flowy is free and open source with nothing gated. You can read every skill before installing, and each listing links to its upstream repository and its creator.

Browse every plugin