Agent skills you can check before you install
Public SKILL.md skills from GitHub repositories with 50+ stars and from the vendors themselves, scanned and scored. Install any of them with one command in Claude Code, Cursor, Codex, GitHub Copilot or Gemini CLI.
45,604 skills from 2,205 repositories · updated 22 hours ago
3,223 skills
- backend-engineeringmagnus919/agent-skillsDesign and implement backend services and APIs — REST, gRPC, GraphQL, event-driven handlers, transaction boundaries, outbox/inbox delivery, migration coexistence, database access, integration, error handling, and service-level testing. Use for application/domain/infrastructure implementation decisions. Language and framework agnostic. Do not use for frontend, data engineering, platform provisioning, API contract ownership, service decomposition strategy, or cross-system migration planning.TestingNo warnings★ 148↓ —
- finishing-a-development-branchjamditis/claude-skills-journalismPresents options for merge, PR, or cleanup. Use when work is complete, tests pass, and you must decide how to integrate.TestingReview first★ 433↓ —
- e2e-setupAI-Builder-Club/skillsSet up an end-to-end test suite in any repo, following practices that make e2e a reliable per-PR gate: real flows over bypass, layered assertions, a reusable auth/session helper, video+trace evidence, and a compounding suite. Use when a repo has no e2e (or weak e2e) and you want system-level tests — "set up e2e", "add end-to-end tests", "scaffold a test gate".TestingNo warnings★ 1.3K↓ —
- wjs-x-increasing-followerjianshuo/claude-skillsUse when 王建硕 wants to systematically grow his X (Twitter) followers by running numbered, A/B-testable growth experiments and tracking which ones actually work. Every action gets a number, a hypothesis, a target metric, a before-state (for rollback), and a verdict. The North-Star metric is the new-follower ÷ profile-visit ratio (conversion) — every profile change is judged against it. Daily it ingests the X Analytics CSV export, scores each running experiment, and recommends keep / rollback. Triggers — "涨粉", "增加 X 粉丝", "X 涨粉实验", "follower growth", "A/B test my profile", "今天的涨粉检查", "/wjs-x-increasing-follower".TestingNo warnings★ 137↓ —
- bats-testing-patternsMicrock/ordinary-claude-skillsMaster Bash Automated Testing System (Bats) for comprehensive shell script testing. Use when writing tests for shell scripts, CI/CD pipelines, or requiring test-driven development of shell utilities.TestingNo warnings★ 408↓ —
- vitestComeOnOliver/skillshubVitest fast unit testing framework powered by Vite with Jest-compatible API. Use when writing tests, mocking, configuring coverage, or working with test filtering and fixtures.TestingNo warnings★ 64↓ —
- youtube-thumbnailmagnus919/agent-skillsDesign, critique, and test YouTube video thumbnails and preview cards for stronger, better-qualified clicks. Use when developing thumbnail concepts, pairing a thumbnail with a title, directing image creation, checking small-screen legibility, preparing a YouTube experiment, or diagnosing thumbnail performance. Do not use for general video editing, channel strategy, or artwork for another platform.TestingNo warnings★ 148↓ —
- testComeOnOliver/skillshubPersistent verification mode. Use when the user explicitly says `/test` or clearly wants exhaustive test, QA, and fix loops before signoff, especially when they want you to keep grinding while they are away. Bias Codex toward running the relevant existing test stack, browser or desktop verification, and diagnosis repeatedly until the requested surface is verified or a real blocker remains.TestingNo warnings★ 64↓ —Also in 1 other repo
- wiki-qaComeOnOliver/skillshub🧠 The right skill, one API call. AI agent skills registry with token-efficient skill resolution. 5,000+ skills from 500+ top repos.TestingNo warnings★ 64↓ —
- unknown-tool-skillComeOnOliver/skillshubUse when testing unknown tool validationTestingNo warnings★ 64↓ —
- test-skillComeOnOliver/skillshubA test skill for unit testsTestingNo warnings★ 64↓ —
- fastapi-protranhieutt/software_development_departmentProduction FastAPI patterns — async endpoints, SQLAlchemy 2.0 async, Pydantic V2, dependency injection, JWT auth, testing. Use for Python 3.11+ FastAPI backends. NOT for Django (→ `django-patterns`) or Node.js (→ `backend-patterns`).TestingNo warnings★ 74↓ —
- qa-methodologymagnus919/agent-skillsDesign and apply QA methodology for software teams: test strategy, regression testing, CI failure triage, test automation, quality gates and metrics, risk-based testing, exploratory testing, test design techniques, AI code quality gates (independent verification, artifact provenance, spec-first oracles, AI-review-comment triage, acceptance-criteria testability for Spec-Driven Development), mutation-guided test hardening and review evidence (surviving mutants, weak assertions, diff-aware mutation testing), agentic eval design (dataset test design, judge-as-system-under-test, flaky-eval discipline), QA career levels (Senior/Staff/Principal), and SDET engineering (test infrastructure, gTAA, CI/CD integration). Do not use for root-cause debugging of production incidents, security implementation or threat modeling, or evaluation framework governance and statistical analysis — route those to systematic-debugging, secure-software-engineering, and agent-evals-and-observability respectively.TestingNo warnings★ 148↓ —
- cncf-landscapemagnus919/agent-skillsUse this skill when discovering and comparing cloud-native technologies from the CNCF Landscape for an architecture or engineering decision. Query the live public Landscape API, filter candidates by capability, category, maturity, license, and repository signals, then produce an evidence-backed shortlist with trade-offs, unknowns, and validation steps. Do not use it as a substitute for project documentation, production-readiness testing, legal review, or general architecture methodology.TestingNo warnings★ 148↓ —
- pydanticaimagnus919/agent-skillsBuild type-safe AI agents and graph-based workflows with PydanticAI and PydanticGraph. Agent creation, function tools, capabilities, dependency injection, structured output, streaming, multi-agent patterns, testing, evals, and graph state machines. Use whenever you are building agents, tool-using LLM workflows, or graph-based state machines in Python. Do not use this skill for unrelated requests; route to the nearest named specialist.TestingNo warnings★ 148↓ —
- playwrightmagnus919/agent-skillsOperate Playwright for browser automation end to end: author and debug E2E test suites (robust locators, network interception and mocking, parallel workers, accessibility snapshot checks), wire them into CI, and drive headless browsing and scraping with an extract -> validate -> save loop. Use when writing, running, fixing, or scraping with Playwright, when a Playwright CI failure or JSON report needs triage, or when the bundled pwrun script should analyze a run. Do not use for QA strategy or test framework selection (route to qa-methodology), for frontend component or architecture design (route to frontend-engineering), or for Cloudflare/DDoS-GUARD challenge bypass (use flaresolverr).TestingNo warnings★ 148↓ —
- vitemagnus919/agent-skillsOperate Vite projects: inspect versions and configuration, run bounded development and production builds, diagnose dependency and asset failures, and configure environment-aware frontend delivery. Use when a task names Vite, vite.config, Vite plugins, import.meta.env, dev-server behavior, or Vite build output. Do not use for frontend architecture or visual implementation (route to frontend-engineering), CI/platform provisioning (route to platform-engineering), browser automation (route to playwright), or accessibility design (route to web-accessibility).TestingNo warnings★ 148↓ —
- manual-testingmgifford/accessibility-skillsLoad this skill whenever you are planning, executing, or reviewing manual accessibility testing. Manual testing with real assistive technologies is essential — automated tools catch only ~30–40 % of WCAG issues. Absolutely always include keyboard-only testing and at least one screen reader test before marking a feature accessible. Under no circumstances skip forced colors mode testing for UI components.TestingNo warnings★ 57↓ —
- testing-anti-patternsMicrock/ordinary-claude-skillsUse when writing or changing tests, adding mocks, or tempted to add test-only methods to production code - prevents testing mock behavior, production pollution with test-only methods, and mocking without understanding dependenciesTestingNo warnings★ 408↓ —
- example-skillserpro69/claude-toolboxAn example skill for testing diff-skill evaluation.TestingNo warnings★ 152↓ —
- example-skillserpro69/claude-toolboxAn example skill for testing diff-skill evaluation.TestingNo warnings★ 152↓ —
- test-skillserpro69/claude-toolboxA test skillTestingNo warnings★ 152↓ —
- golang-testingserpro69/claude-toolboxGo testing best practicesTestingNo warnings★ 152↓ —
- team-releasetranhieutt/software_development_departmentOrchestrates the release team of release-manager, qa-engineer, devops-engineer, and producer to execute a release from candidate to production deployment. Use when coordinating a release across QA, DevOps, and release management.TestingNo warnings★ 74↓ —