Claude resources tagged “testing”
60 curated Claude Code resources tagged testing in the HeyClaude directory — mostly mcp servers, agents, and hooks. 4 of them sit in the trusted tier.
Highlights from this set
Standout entries tagged testing, picked by their own metadata — trust tier, provenance, documentation, and recency.
All testing resources
/api-contract-check - API Contract Check Command for Claude Code
Verify an HTTP provider against its Pact consumer contracts and report which expectations it breaks.
/frontend-visual-qa - Chrome Design Verification Runbook
Run the Chrome guide design verification and console debug workflows on a local page.
/targeted-test-generation - Targeted Test Generation Runbook
Draft minimal tests for a changed file using git diff and repo test conventions.
/test-advanced - Advanced Test Planning Custom Command
Custom .claude/commands/test-advanced.md recipe for planning deeper, source-grounded test coverage without claiming a built-in Claude Code command.
Accessibility Checker - Claude Code Hooks
Automated accessibility testing and compliance checking for web applications following WCAG 2.1 and WCAG 2.2 guidelines.
Agent Device MCP Server
Inspect and control real app sessions with agent-device MCP tools.
Angular Repository Contributor Agent for Claude
Contribute to Angular from its official AGENTS.md, pnpm workflow, Bazel test targets, zoneless testing rules, coding standards, and PR guidance.
Ansible Repository Contributor Agent for Claude
Contribute to ansible/ansible from its official AGENTS.md, GPLv3 and BSD-2-Clause licensing rules, ansible-test commands, changelog, and CI flow.
API Development Kit
Bundles an API-builder agent with docs, generate-tests, and debug commands for scaffolding and testing REST APIs in Claude Code.
Astro Repository Contributor Agent for Claude
Contribute to the Astro monorepo from its official AGENTS.md, docs, package layout, test commands, and contributor guardrails.
Browserless
Headless browser infrastructure for Puppeteer, Playwright, and AI agents.
BrowserMCP Server
Automate real browser tabs from Claude, Cursor, VS Code, Windsurf, and other MCP clients through BrowserMCP.
CircleCI MCP Server
CircleCI's official Model Context Protocol server exposing 18 tools to inspect build failures, flaky tests, pipeline status, logs, and config validation from any MCP-compatible client.
Code Quality & Review
Sets up automated review — a scoped reviewer agent, test scaffolding, and on-demand explanations of unfamiliar code.
Code Test Runner Hook - Hooks
After an edit, runs the right test runner for that file — Jest/Vitest, pytest, go test, or Maven/Gradle — against the related tests.
Coding Agent Test-Before-Merge Rules
Require coding agents to run focused tests, report exact commands, protect test data, and block merges when verification is stale or missing.
Cypress Cloud MCP Server
Connect Claude to Cypress Cloud test results, flake data, accessibility reports, and UI Coverage.
Dart Agent Skills
Dart team skills for Claude Code, Codex, Gemini CLI, and other agents covering tests, CLI apps, coverage, runtime errors, mocks, pub conflicts, static analysis, FFI, native assets, and patterns.
DeepEval
Python LLM evaluation tests, metrics, regression checks, and tracing.
Firefox DevTools MCP
Connect Claude to local Firefox DevTools automation through WebDriver BiDi.
Flutter Agent Skills
Flutter team skills for Claude Code, Codex, Gemini CLI, and other agents covering layout errors, integration tests, widget tests, previews, architecture, routing, localization, JSON, and HTTP.
Generate Tests Custom Command
Custom .claude/commands/generate-tests.md recipe that asks Claude Code to write unit and edge-case tests for the file you pass in. Not built-in; steered by prompt text, not flags.
Git Pre Commit Validator - Hooks
Comprehensive pre-commit hook that validates code quality, runs tests, and enforces standards.
Home Assistant Core Repository Contributor Agent for Claude
Contribute to Home Assistant Core from its official AGENTS.md, setup commands, Python 3.14 guidance, integration tests, translations, and PR rules.
Istanbul Coverage Delta Statusline
Show current line coverage and local coverage delta.
Jam MCP Server for Claude
Debug faster with AI agents that access video recordings, console logs, and network requests
Jest Snapshot Auto Updater - Hooks
Automatically updates Jest snapshots when component files are modified significantly.
Kibana Repository Contributor Agent for Claude
Contribute to elastic/kibana with AGENTS.md-backed module, plugin, TypeScript, i18n, testing, and validation rules.
Kubernetes Repository Contributor Agent for Claude
Contribute to kubernetes/kubernetes from its official AGENTS.md, generated file rules, staging source of truth, dependency scripts, boilerplate, and make workflows.
LiveKit Agent Skills
LiveKit skill pack for voice AI architecture, handoffs, testing discipline, and simulation scenarios for Claude Code, Codex, Cursor, and other agents.
MATLAB MCP Core Server
Connect Claude to a licensed MATLAB install for code analysis, script execution, toolbox detection, testing, and custom MATLAB tools.
MCP Inspector
Visual MCP server testing and debugging.
MCP Tool Contract Testing Skill
Test-first MCP tool validation for safer integrations, stronger reliability, and lower breakage risk.
Mobile MCP Server
Automate iOS and Android apps from MCP clients across simulators, emulators, and real devices.
Next.js Repository Contributor Agent for Claude
Contribute to the Next.js framework monorepo from its official AGENTS.md, package layout, build modes, test guidance, and PR workflow guardrails.
OpenAI Evals
Build repeatable LLM and agent evals with OpenAI's open-source framework.
Performance Benchmark Report - Hooks
Runs performance benchmarks and generates comparison report when session ends.
Playwright E2E Testing Automation Skill
Playwright auto-waits for elements before acting, isolates every test context, and targets Chromium, Firefox, and WebKit from a single cross-platform API...
Playwright MCP Browser Automation Engineer Skill
Cross-platform browser task automation for AI agents using Playwright MCP with stability and observability built in.
Playwright MCP Server for Claude
Official Microsoft MCP server for browser automation, letting Claude navigate, click, type, and snapshot pages through Playwright's accessibility tree.
Playwright Test Runner - Hooks
Automatically runs Playwright E2E tests when test files or page components are modified.
Playwright Trace Failure Triage Capability Pack Skill
Triage Playwright failures from traces, action timelines, screenshots, network events, and CI context.
React Router Repository Contributor Agent for Claude
Contribute to React Router from its official AGENTS.md, mode model, pnpm commands, unit tests, integration tests, docs, typegen, and change-file rules.
React Test Generator
Automatically creates or updates test files when React components are modified.
Screenshot Visual Regression - Claude Code Hook
Pixel-diff a new screenshot against its baseline with odiff and report visual regressions.
Storybook MCP Server for Claude
Connect Claude to Storybook docs, stories, component previews, and interaction or accessibility tests.
Storybook Repository Contributor Agent for Claude
Contribute to Storybook from its official AGENTS.md, next branch, Node 22.12+, Yarn Berry, NX, yarn task, Storybook Vitest, sandboxes, and docs guidance.
TDD Workflow Custom Command for Claude Code
A custom .claude/commands/tdd-workflow.md recipe that drives a red-green-refactor loop in Claude Code. Not a built-in command.
Test Automation Engineer
Expert in automated testing strategies, test frameworks, and quality assurance across unit, integration, and end-to-end testing
Test Coverage Final Report - Hooks
Generates a comprehensive test coverage report when the coding session ends.
Test Double Misuse Review Rules
Review test doubles for over-mocking, under-mocking, mock drift, and missing contract tests for faked dependencies to keep tests meaningful and reliable.
Test Runner Hook - Hooks
Automatically run relevant tests when code changes are detected, with intelligent test selection and parallel execution.
TypeScript Maintenance Mode Repository Agent for Claude
Work safely in the Microsoft TypeScript repository from its official maintenance-mode AGENTS.md, accepted PR categories, test guidance, and TypeScript-Go redirect.
Unity MCP Server
Connect Claude, Codex, VS Code, Cursor, and other MCP clients to the Unity Editor for scene authoring, asset management, script editing, testing, multi-instance routing, tool groups, and optional remote server auth.
Vitest Coverage Planning Capability Pack Skill
Plan Vitest coverage with V8/Istanbul provider choice, include/exclude scope, thresholds, reporters, gap triage, and CI-ready recommendations.
Vitest Test-Driven Development Rule for Claude Code
Test-first development with Vitest: failing test first, minimal code to pass, then refactor — vi mocks, fake timers, and coverage gates.
WebDriverIO MCP Server
Automate browsers, mobile apps, screenshots, accessibility snapshots, cookies, geolocation, and gestures from Claude with WebDriverIO.
Windows MCP Server
Automate Windows apps, UI flows, and desktop QA tasks from MCP clients with Windows MCP.
Signal coverage
How these 60 resources score on the trust and safety signals HeyClaude reviews — counted from this set, not the directory as a whole.
A short, calm digest of reviewed Claude resources. Unsubscribe any time.