1,559 of these skill files have been read, by 1,201 distinct authors, and what they tell an agent counted. What Test authors agree on, and what they forbid

• 61

  Codex implementation loop

  olddonkey/olddonkey-skills/skills/codex-implementation-loop · Skill

  15★ repo

  Agent skills distilled from real-world usage — codex-implementation-loop: delegate coding to Codex, keep review/gate/ship judgment in Claude's hands

• 62

  Pythonic

  paulnsorensen/easy-cheese/.agents/skills/pythonic · Skill

  15★ repo

  Cheese your code 🧀 — high-quality results as easy as cheese. A portable, harness-agnostic Agent Skills toolkit.

• 63

  Appium python expert

  jmr85/e2e-agent-skills/skills/appium-python-expert · Skill

  13★ repo

  A collection of skills focused on end-to-end automation for AI agents.

• 64

  Api testing

  laragentic/agents/examples/skills/api-testing · Skill

  no license13★ repo

  Agentic loops and AI agent capabilities for the Laravel AI SDK

• 65

  Momentic explore prompt

  momentic-ai/skills/skills/momentic-explore-prompt · Skill

  no license13★ repo

  Claude Agent SDK with a E2E testing tool

• 66

  Six sigma r

  robustagile/six-sigma-in-r-skill/skills/six-sigma-r · Skill

  12★ repo

  AI skill for Claude Code and Codex that helps agents write correct R for Six Sigma and SPC work, including control charts, capability analysis, hypothesis tests, and ANOVA, with a method-selection layer that recommends the right technique from a plain-English problem description.

• 67

  Ab test setup

  eugenepyvovarov/mcpbundler-agent-skills-marketplace/ab-test-setup · Skill

  12★ repo

  agent skills marketplace for mcp bundler(can be used with other ai tools with support of agent skills markeplaces). some skills are mine, also borrowed skills(credited to authors)

• 68

  Sf agentforce

  Clientell-Ai/salesforce-skills/skills/sf-agentforce · Skill

  12★ repo

  Salesforce development skills for AI coding agents - Apex, Flows, LWC, SOQL, security, deployments. Works with Claude Code, Cursor, Codex, and 50+ tools.

• 69

  Agent browser

  runkids/my-skills/agent-browser/agent-browser · Skill

  no license12★ repo

  My AI agent skills — managed with skillshare

• 70

  Atdd plan

  Flagrare/agent-skills/plugins/flagrare/skills/atdd-plan · Skill

  no license11★ repo

  Claude Code skills that wrap your full dev cycle — ticket intake, ATDD planning, code review, doc-drift audits, PR writing, and changelogs.

• 71

  Add tests

  tykisgod/quick-question/skills/add-tests · Skill

  10★ repo

  The control plane for game-dev agents — close the loop with verified compile, test, and cross-model review across Unity, Godot, Unreal, and S&box. Lifecycle-aware /qq:go routing, 26 /qq:* slash commands. Claude Code-first, agent-agnostic via HTTP and MCP.

• 72

  Agent evaluation

  viktorbezdek/skillstack/agent-evaluation/skills/agent-evaluation · Skill

  10★ repo

  Skills I use and develop to deliver better outcomes faster and with less effort.

• 73

  Midnight skill

  ADAvault/midnight-skill · Skill

  10★

  Claude Code skill for writing and testing Compact smart contracts on Midnight

• 74

  Does it work

  TsakunovR/does-it-work · Skill

  10★

  Claude Code / Codex skill: проверяет, что ваш продукт реально работает — находит баги и строит защиту от регрессий автотестами

• 75

  Gatling best practices

  rcampos09/performance-testing-skills/skills/gatling-best-practices · Skill

  no license10★ repo

  Open-source Claude Code skills for performance and load testing. Install any skill to get AI-guided test generation for your stack.

• 76

  Cypress debugger

  voidmatcha/e2e-skills/skills/cypress-debugger · Skill

  9★ repo

  AI agent testing toolkit for Playwright and Cypress: generate E2E tests from scratch, review existing specs against 24 anti-patterns (P0/P1/P2 silent-always-pass smells), and debug flaky failures from playwright-report/ or cypress/reports/. Agent Skills for Claude Code and Codex.

• 77

  Ab testing design

  Dragoon0x/everything-design-taste/skills/ab-testing-design · Skill

  9★ repo

  A taste system for AI agents. 288 skills, 80 agents, 12 rules, and 8 hooks that turn generic AI output into work with genuine design quality. Anti-slop detection, typography craft, color systems, brand voice, product strategy, and 50+ specialized reviewers across UI, industry, platform, and content domains.

• 78

  Malformed contract

  skill-tools/skill-tools/packages/contracts/test/fixtures/malformed-contract · Skill

  9★ repo

  Lint, score, and route SKILL.md files. Parse, validate, and quality-score Agent Skills per the agentskills.io spec. BM25 skill routing. Zero LLM dependencies.

• 79

  Periscope mcp

  segentic-lab/periscope-mcp/io.github.segentic-lab/periscope-mcp · MCP server

  8★ repo

  Web-app QA for AI agents: 73 Playwright tools — auth, E2E, a11y/SEO/GEO, Web Vitals + Lighthouse

• 80

  Autosearch hitl

  iagogfe/autosearch-hitl/skills/autosearch-hitl · Skill

  7★ repo

  Human-in-the-loop autonomous optimization — an agent skill that iterates change → measure → keep/discard against any objective metric. Generalizes Karpathy's autoresearch.

• 81

  Playwright auth state

  hzijad/playwright-agent-skills/skills/playwright-auth-state · Skill

  6★ repo

  Playwright skills for writing, reviewing, and debugging reliable end-to-end tests.

• 82

  Browsing with playwright

  sheikh-mohammad/agent-factory-claude-skills/.claude/skills/browsing-with-playwright · Skill

  no license6★ repo
• 83

  Battle tested engineer

  sayeed1999/agent-skills/skills/battle-tested-engineer · Skill

  6★ repo

  Reusable agent skills for battle-tested engineering judgment — least code, fix the problem, don't break what works. Works with Claude Code, Cursor, and Codex.

• 84

  Abtest scientist

  vignesh2027/Claude-Agentic-Skills2.0-version/abtest-scientist · Skill

  6★ repo

  Been building this for 6 months. Finally at a place where I'm comfortable sharing it.

• 85

  Analyze failures

  katalon-labs/true-skills/plugins/katalon-true-platform/skills/analyze-failures · Skill

  6★ repo
• 86

  Testing with pitlane

  pitlane-ai/pitlane/skills/testing-with-pitlane · Skill

  no license6★ repo

  Race a baseline vs a skill or MCP on real tasks. Hard checks show if it got better, faster, or cheaper. Numbers, not vibes.

• 87

  Respect the oracle

  chris-short/respect-the-oracle · Skill

  6★

  A portable agent skill that stops AI coding agents from overfitting or gaming tests they don't own.

• 88

  Android emulator harness

  simiancraft/simiancraft-skills/skills/android-emulator-harness · Skill

  6★ repo

  Public Claude Code skills and agents from simiancraft. Marketplace-installable.

• 89

  Agent browser

  mgiovani/cc-arsenal/skills/agent-browser · Skill

  6★ repo

  45 production-grade AI agent skills for real dev workflows. Code review, shipping, docs, git. Works with any skill-compatible agent.

• 90

  Contract testing flywheel

  pactflow/pactflow-agent-skills/plugins/contract-testing-flywheel/skills/contract-testing-flywheel · Skill

  6★ repo

  Plugins & Agent Skills for Pactflow, Pact & Drift

• 91

  Selenium mcp

  pshivapr/selenium-mcp/io.github.pshivapr/selenium-mcp · MCP server

  6★ repo

  Selenium Tools for MCP

• 92

  Agent browser

  vanducng/skills/skills/agent-browser · Skill

  5★ repo

  A daily-driver collection of skills for agentic coding — a portable, agent-agnostic catalog managed with the vd CLI.

• 93

  Playwright skill

  appautomaton/playwright-skill · Skill

  no license5★

  Android-friendly Playwright SKILL for AI agents — Termux launcher patch, headless Chromium, install via git subtree into .codex/skills.

• 94

  Ab test setup

  Sudhakaran88/solopreneur-skills/skills/ab-test-setup · Skill

  5★ repo

  42 opinionated, research-backed marketing & growth skills for solopreneurs — as a Claude Code plugin.

• 95

  Assumption rigor

  Uxcel-Lab/product-skills/pm/audits/assumption-rigor · Skill

  5★ repo

  Expert UX design and product management skills for AI assistants, built from the Uxcel learning library.

• 96

  Dummy skill

  openJiuwen-ai/CareerSim-BDCI26/tests/fixtures/solution/skills/dummy-skill · Skill

  5★ repo

  [CCF BDCI 2026] Career survival & promotion challenge for agents

• 97

  Elenchus

  Shogo1222/socratic/skills/elenchus · Skill

  5★ repo
• 98

  Code review coach

  Far-200/think-before-code/skills/code-review-coach · Skill

  5★ repo

  Socratic Agent Skills for learning problem-solving and software-engineering judgment — one question at a time.

• 99

  Experiment doc

  stefanoskarakasis/Product-Marketing-Skills/pmm-execution/skills/experiment-doc · Skill

  5★ repo

  Product Marketing Skills for Claude Cowork and AI agents — from growth experiments to go-to-market strategy, execution, CI, and research.

• 100

  Quaere evidence

  haru0416-dev/quaere/skills/core/quaere-evidence · Skill

  5★ repo

  Process-correction skills that make coding agents ask before they act.

• 101

  Ab test analyzer

  thaolst/ai-growth-agents-for-marketers/skills/ab-test-analyzer · Skill

  5★ repo

  AI agents for growth marketing — built from real fintech campaigns. Prompts + Python.

• 102

  Ab testing

  TommyBez/skillsboard/.agents/skills/ab-testing · Skill

  5★ repo

  A shared library for the AI skills your team recommends—across Claude, Codex, Cursor, and more.

• 103

  Check tests

  mataeil/OODA-loop/skills/check-tests · Skill

  5★ repo

  Autonomous operations layer for Claude Code — opens small reviewable PRs for your live side project and re-orients from which ones you merge or reject. HALT file + hard cost cap; you stay in command.

• 104

  Vibe Test — Browser Testing Agent

  AishwaryShrivastav/vibe-testing/io.github.AishwaryShrivastav/vibe-testing · MCP server

  no license5★ repo

  Code-aware browser testing agent — 13 Playwright tools for AI code editors via MCP

• 105

  Wopee mcp

  Wopee-io/wopee-mcp/io.github.Wopee-io/wopee-mcp · MCP server

  5★ repo

  AI testing agents for web apps — dispatch test runs, crawls, fetch artifacts and status.

• 106

  Skills

  2389-research/test-kitchen/skills · Skill

  4★ repo

  Parallel exploration of implementation approaches - implements multiple variants simultaneously and lets tests determine the winner

• 107

  Write tests

  Anyesh/skillprobe/.agents/skills/write-tests · Skill

  4★ repo

  Automated end-to-end testing for AI agent skills(agentskills.io). Launches Claude Code and Cursor as subprocesses, runs scenarios in real workspaces, and asserts what the model actually does.

• 108

  Clerk claude skill

  wrsmith108/clerk-claude-skill · Skill

  4★

  Claude Code skill for Clerk authentication patterns

• 109

  Generate integration tests

  basteez/java-skills/.claude/skills/generate-integration-tests · Skill

  no license4★ repo

  A collection of java skills for claude code

• 110

  Improve

  KhaledSaeed18/dotclaude/.agents/skills/improve · Skill

  4★ repo

  Reusable Claude Code extension registry. skills, subagents, slash commands, and hooks for engineering, git, testing, and security workflows. Distributed as a shadcn GitHub registry and as installable plugins.

• 111

  Memory cli

  pygent-ai/memory-cli/skills/memory-cli · Skill

  4★ repo

  Skill for building memory by agent itself

• 112

  Clean code

  markoa/clean-code-skill/skills/clean-code · Skill

  4★ repo

  Agent skill for clean code programming standards

• 113

  Typo3 testing

  netresearch/typo3-testing-skill/skills/typo3-testing · Skill

  no license4★ repo

  Agent Skill for creating and managing TYPO3 extension tests | Claude Code compatible

• 114

  Api testing mcp

  cocaxcode/api-testing-mcp/io.github.cocaxcode/api-testing-mcp · MCP server

  4★ repo

  MCP server for API testing. 35 tools: HTTP, assertions, flows, OpenAPI, collections.

• 115

  Blacksmith

  grahamnotgrant/blacksmith-mcp/io.github.grahamnotgrant/blacksmith · MCP server

  4★ repo

  MCP server for Blacksmith CI - query runs, analyze test failures, detect flaky tests.

• 116

  Browserhawk

  JakubKontra/skills/browserhawk · Skill

  3★ repo

  Security scanning, automated web testing, and SEO diagnostics — three Claude Code skills that work out of the box

• 117

  Cypress agent skill

  KahlilR23/cypress-agent-skill · Skill

  3★

  Cypress E2E testing skill for AI agents — Claude Code, Codex, OpenClaw, Cursor, and more. Covers selectors, network stubbing, auth, CI, flake prevention, POM, and TypeScript. Cypress 15.x compatible.

• 118

  Creo

  oyusypenko/creo/creo · Skill

  3★ repo

  AI-powered design review, UX analysis, SEO audit, content generation, DevOps & testing toolkit for Claude Code. 12 skills, 12 parallel subagents. One-liner install.

• 119

  Ai coding discipline

  satbirbhbc-ux/ai-coding-principles/ai-coding-discipline · Skill

  3★ repo

  Build AI coding principles for Claude Code, with discipline rules and system design guides to improve code quality and reduce bad patterns

• 120

  Claude android feature skill

  arslan555/claude-android-feature-skill · Skill

  no license3★

  Build a complete, production-grade Android feature from a single prompt — Kotlin, Compose, Hilt, MVI, offline-first. An AI skill validated against Now in Android.