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.
25,788 skills from 951 repositories · updated 16 minutes ago
2,026 skills
- unit-test-generatorArabelaTso/Skills-4-SEAutomatically generates comprehensive unit tests for functions, classes, and modules. Use when you need to create tests for Python (pytest, unittest) or Java (JUnit, TestNG) code. Generates tests with comprehensive coverage including happy paths, edge cases, and error conditions. Analyzes existing test patterns in the codebase to match style and conventions. Supports mocking, parameterized tests, fixtures, and follows best practices for each framework.TestingNo warnings★ 258↓ —
- assertion-synthesizerArabelaTso/Skills-4-SEGenerate test assertions from existing code implementation. Use when the user has implementation code without tests or incomplete test coverage, and needs assertions synthesized by analyzing the code's behavior, inputs, outputs, and state changes. Supports Python (pytest/unittest), Java (JUnit/AssertJ), and JavaScript/TypeScript (Jest/Chai). Handles equality checks, collections, exceptions, and state verification.TestingNo warnings★ 258↓ —
- tdd-migrateparcadei/Continuous-Claude-v3TDD workflow for migrations - orchestrate agents, zero main context growthTestingNo warnings★ 3.9K↓ —
- tdd-bug-fixrshankras/claude-code-apple-skillsFix bugs using red-green-refactor — reproduce the bug as a failing test first, then fix it. Use when fixing bugs to ensure they never regress.TestingNo warnings★ 827↓ —
- runtime-error-explainerArabelaTso/Skills-4-SEExplains runtime errors and compilation failures with actionable debugging guidance. Use when Python or Java code throws runtime exceptions (NullPointerException, TypeError, AttributeError, etc.), compilation errors (syntax errors, type mismatches, import failures), or dependency issues. Analyzes error messages, stack traces, and code context to identify root causes and provide concrete fixes with examples. Distinct from test-related errors - focuses on errors during normal code execution and build processes.TestingNo warnings★ 258↓ —
- tdd-featurershankras/claude-code-apple-skillsRed-green-refactor scaffold for building new features with TDD. Write failing tests first, then implement to pass. Use when building new features test-first.TestingNo warnings★ 827↓ —
- contribute-preparejeremylongshore/tons-of-skills-marketplacePrepare an OSS contribution locally after a read-only contribution audit. Creates explicitly scoped candidate records, repository dossiers, worktrees, test evidence, and gate results, but never publishes to GitHub. Use when the user has selected an issue and asks to set up, research, implement, test, or draft the contribution. Trigger with "/contribute-prepare" or "prepare this contribution locally".TestingNo warnings★ 2.9K↓ —
- beta-testingrshankras/claude-code-apple-skillsBeta testing strategy for iOS/macOS apps. Covers TestFlight program setup, beta tester recruitment, feedback collection methodology, user interviews, signal-vs-noise interpretation, and go/no-go launch readiness decisions. Use when planning a beta, setting up TestFlight, collecting user feedback, or deciding if ready to launch.TestingNo warnings★ 827↓ —
- cross-video-qaJimLiu/baocut用户问「我哪一期讲过 X」「这几部视频里谁说过 Y」「X 在我的视频里是怎么讲的」「有哪些讲 X 的视频」这类要在多部视频里找答案的问题时用：按意思检索、按视频去重、按当前版本重新定位，只凭找回来的原话回答，每条论断注明视频与时间，覆盖不全时说明。不用于总结或改写一部视频（那是总结、博客），也不改视频。TestingNo warnings★ 1.4K↓ —
- playwright-automationArabelaTso/Skills-4-SEBrowser automation via Playwright for web testing, screenshots, form filling, scraping, and verification. Use when tasks require navigating websites, interacting with web pages, or testing web applications.TestingNo warnings★ 258↓ —
- make-voxhassancs91/claude-faceless-shorts-creatorBuild a Vox-style LAYERED-COLLAGE vertical short end-to-end — script + scene dissection into image layers, layer production (AI images via gen_image.py + cutout.py, HTML→PNG, SVG-in-TSX), choreographed TSX assembly on the collage kit (CollageBoard camera, parallax, cutouts, chips, routes), frame QA, render, then voice/SFX via the shared machinery. Use when the user wants a "vox style", documentary, or explainer-collage short, a map-travel or archival-history sequence, or to continue the vox-N series — the paper-collage look, not plain TSX animation (that is make-short) and not video-model pixels (that is make-ai-short). Defers raw TSX crash rules to vidtsx-2d-generator and SFX taste to suggest-sfx.TestingNo warnings★ 280↓ —
- testparcadei/Continuous-Claude-v3Comprehensive testing workflow - unit tests ∥ integration tests → E2E testsTestingNo warnings★ 3.9K↓ —Also in 1 other repo
- test-contractrshankras/claude-code-apple-skillsGenerate protocol/interface test suites that any implementation must pass. Define the contract once, test every implementation. Use when designing protocols or swapping implementations.TestingNo warnings★ 827↓ —
- test-oracle-generatorArabelaTso/Skills-4-SEGenerates automated test oracles to verify correct software behavior. Creates assertion-based oracles (expected values), property-based oracles (invariants), differential oracles (comparing implementations), and metamorphic oracles (input transformations). Use when you need to generate assertions for test cases, identify invariants that should always hold, compare new vs legacy implementations, create metamorphic test relationships, validate function correctness, or improve test coverage with better verification strategies. Supports Python (pytest, unittest, hypothesis) and Java (JUnit, property testing).TestingNo warnings★ 258↓ —
- tddparcadei/Continuous-Claude-v3Test-driven development workflow with philosophy guide - plan → write tests → implement → validateTestingNo warnings★ 3.9K↓ —Also in 1 other repo
- hunt-coreEncod3d-Sec/TORCHShared discipline for every hunt-* skill: scope and authorization gating, the two-account rule, the confirmation gate that separates a real finding from a false positive, enumeration limits, stop conditions, marker discipline, wiki-first query and self-heal, FIND output, Deadends, and wiki distillation. ALWAYS LOADED alongside any hunt skill. Also trigger directly on "is this in scope", "is this a real bug", "how do I confirm this", "should I keep going", "how many IDs should I test", "what severity", "how do I report this", "I got someone else's data". Every hunt-* skill assumes this file; without it they run without their safety and quality layer.TestingNo warnings★ 334↓ —
- TestCafe TestingPramodDutta/qaskillsComprehensive TestCafe end-to-end testing skill for writing reliable browser automation tests in JavaScript and TypeScript without WebDriver dependencies, featuring smart assertions, automatic waiting, and parallel execution.TestingNo warnings★ 240↓ —
- migration-patternsrshankras/claude-code-apple-skillsMigration guides for CoreData to SwiftData, UIKit to SwiftUI, ObservableObject to @Observable, XCTest to Swift Testing, Objective-C to Swift, and StoreKit 1 to StoreKit 2. Use when migrating between Apple framework generations.TestingNo warnings★ 827↓ —
- skill-creatorjeremylongshore/tons-of-skills-marketplaceCreate production-grade agent skills aligned with the 2026 AgentSkills.io spec and Anthropic best practices (2026). Also validates existing skills against the Intent Solutions 100-point rubric. Use when building, testing, validating, or optimizing Claude Code skills. Trigger with "/skill-creator", "create a skill", "validate my skill", or "check skill quality". Make sure to use this skill whenever creating a new skill, slash command, or agent capability.TestingNo warnings★ 2.9K↓ —
- feature-flagsrshankras/claude-code-apple-skillsGenerate feature flag infrastructure with local defaults, remote configuration, SwiftUI integration, and debug menu. Use when adding feature flags or A/B testing to iOS/macOS apps.TestingNo warnings★ 827↓ —
- dev-lifecyclecodeaholicguy/ai-devkitAI DevKit · Orchestrator for structured SDLC phase skills. Use when the user wants to run the full lifecycle or choose the next phase across requirements, design, planning, implementation, testing, and review.TestingNo warnings★ 1.7K↓ —
- hunt-idorEncod3d-Sec/TORCHIDOR / BOLA hunting - two-account methodology, identifier discovery and UUID leak chaining, the trusted-identifier test, GraphQL node and nested-object IDOR, cross-tenant escalation, write and delete operations. Bounded ID sampling, never range sweeps. Wiki-first, FIND schema output. Trigger on IDOR, BOLA, broken access control, object level authorization, cross-tenant, "read another user's data", "swap the id", or any API path or parameter carrying a numeric ID, UUID, or account identifier.TestingNo warnings★ 334↓ —
- mutation-testingrshankras/claude-code-apple-skillsEXPERIMENTAL — mutation testing with muter to measure whether tests actually assert anything: mutants that survive reveal assertion-free coverage. Advisory report only, never a merge gate. Use on engine/logic targets when coverage numbers look good but bugs still slip through.TestingNo warnings★ 827↓ —
- docs-guardamElnagdy/guard-skillsReview generated or changed documentation before it ships — READMEs, API references, docstrings, PHPDoc/JSDoc, changelogs, tutorials, and doc sites. Best used reactively after an agent writes or edits docs, after code changes documented behavior, or before publishing docs. Use when the user says 'review the docs', 'is this documentation accurate', 'update the docs', 'write a README', 'document this API', 'add a docstring', or 'add a changelog entry'. Core job: verify every referenced function, flag, endpoint, config key, and code sample against the source; catch docs-vs-code drift; strip filler and unverifiable claims. DO NOT USE for production code review (use clean-code-guard), test review (use test-guard), marketing copy or blog posts, prose style editing of non-technical writing, or documentation site theming.TestingNo warnings★ 1.3K↓ —