2,372 free skills
Skills for writing and running tests — framework-specific patterns for Jest, Vitest, pytest, Go testing, RSpec, JUnit, Playwright, Cypress, and more.
Sourced from real, public repositories — synced daily, never invented.
15 tools across six categories
13 of them never send your data anywhere
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pytest-skill
lambdatest/agent-skills
>
pma-rust
zzci/skills
Production-grade Rust acceptance baseline for PMA-managed Rust services and CLIs. Use with /pma when creating, reviewing, or upgrading Rust workspaces, Axum/Tokio services, CLI binaries, CI pipelines, release packaging, lint policy, dependency choices, testing, observability, security, or supply-chain controls. Defines hard locks for pure-Rust dependencies, rustls TLS, forbid unsafe code, edition 2024, workspace lint inheritance, MSRV, nextest, cargo-deny, cargo-shear, typos, and portable release builds.
npx-cli
jwynia/agent-skills
Build and publish npx-executable CLI tools using Bun as the primary toolchain with npm-compatible output. Use when the user wants to create a new CLI tool, set up a command-line package for npx execution, configure argument parsing and terminal output, or publish a CLI to npm. Covers scaffolding, citty arg parsing, sub-commands, terminal UX, strict TypeScript, Biome + ESLint linting, Vitest testing, Bunup bundling, and publishing workflows. Keywords: npx, cli, command-line, binary, bin, tool, bun, citty, commander, terminal, publish, typescript, biome, vitest.
loki-mode
davila7/claude-code-templates
Multi-agent autonomous startup system for Claude Code. Triggers on "Loki Mode". Orchestrates 100+ specialized agents across engineering, QA, DevOps, security, data/ML, business operations, marketing, HR, and customer success. Takes PRD to fully deployed, revenue-generating product with zero human intervention. Features Task tool for subagent dispatch, parallel code review with 3 specialized reviewers, severity-based issue triage, distributed task queue with dead letter handling, automatic deployment to cloud providers, A/B testing, customer feedback loops, incident response, circuit breakers, and self-healing. Handles rate limits via distributed state checkpoints and auto-resume with exponential backoff. Requires --dangerously-skip-permissions flag.
setting-up-ci
spencerpauly/awesome-cursor-skills
Set up a GitHub Actions CI/CD pipeline with linting, testing, type-checking, and deployment steps.
agent-rdp
thisnick/agent-rdp
Controls Windows Remote Desktop sessions for automation, testing, and remote administration. Use when the user needs to connect to Windows machines via RDP, take screenshots, click, type, or interact with remote Windows desktops.
typescript
alinaqi/maggy
TypeScript strict mode with eslint and jest
vectorbt
agiprolabs/claude-trading-skills
High-performance vectorized backtesting with parameter optimization, portfolio simulation, and rich performance metrics
skill-authoring
pproenca/dot-skills
Design and development best practices for Claude Code skills, MCP tools, and AI agent capabilities. Use when creating skills, writing SKILL.md files, designing tool descriptions, or optimizing triggers. Triggers on "create a skill", "skill template", "write skill instructions", SKILL.md, metadata.json, progressive disclosure, trigger optimization, MCP tool design, or skill testing. Does NOT cover specific frameworks or languages (use dedicated skills).
testing-oauth2-implementation-flaws
mukul975/anthropic-cybersecurity-skills
Tests OAuth 2.0 and OpenID Connect implementations for authorization code
android-testing-unit
krutikjain/android-agent-skills
Write fast, focused Android unit tests for reducers, use cases, repositories, and lifecycle-safe state holders.
storybook-setup
patricio0312rev/skills
Sets up Storybook for component documentation with controls, actions, accessibility testing, and visual regression. Use when users request "Storybook setup", "component documentation", "UI library", "component stories", or "design system docs".
nestjs-best-practices
ejirocodes/agent-skills
NestJS 11+ best practices for enterprise Node.js applications with TypeScript. Use when writing, reviewing, or refactoring NestJS controllers, services, modules, or APIs. Triggers on: NestJS modules, controllers, providers, dependency injection, @Injectable, @Controller, @Module, middleware, guards, interceptors, pipes, exception filters, ValidationPipe, class-validator, class-transformer, DTOs, JWT authentication, Passport strategies, @nestjs/passport, TypeORM entities, Prisma client, Drizzle ORM, repository pattern, circular dependencies, forwardRef, @nestjs/swagger, OpenAPI decorators, GraphQL resolvers, @nestjs/graphql, microservices, TCP transport, Redis transport, NATS, Kafka, NestJS 11 breaking changes, Express v5 migration, custom decorators, ConfigService, @nestjs/config, health checks, or NestJS testing patterns.
111-java-maven-dependencies
jabrena/plinth
Use when you need to add or evaluate Maven dependencies that improve code quality or domain modeling — including nullness annotations (JSpecify), static analysis (Error Prone + NullAway), functional programming (VAVR), architecture testing (ArchUnit), or money and currency support (JavaMoney) — and want a consultative, question-driven approach that adds only what you actually need. This should trigger for requests such as Add Maven dependencies; Add JSpecify nullness dependencies; Add Error Prone NullAway dependencies; Add VAVR functional dependencies; Add ArchUnit architecture testing dependencies; Add JavaMoney dependencies. Part of Plinth Toolkit
higgsfield-image-auto
akcodez/higgsfield-claude-skills
Automatically generate an AI image on Higgsfield using Playwright browser automation. Use when the user has an image prompt and wants to generate it on Higgsfield Soul 2.0 or Nano Banana Pro. Triggers on requests like "generate image on higgsfield", "create image", "auto-generate image", "make the image on higgsfield", or any request to submit an image generation job. Requires Playwright MCP tools.
visual-regression-tester
patricio0312rev/skills
Implements visual regression testing with screenshot comparison, diff detection, and CI integration using Playwright or Chromatic. Use when users request "visual testing", "screenshot testing", "UI regression", "visual diff", or "Chromatic setup".
wix-cli-app-validation
wix/skills
Use when testing app readiness, verifying runtime behavior, or validating before releases and after changes in the code. Triggers include validate, test, verify, check readiness, preview validation, build verification, TypeScript compilation.
recording-browser-flow-as-test
spencerpauly/awesome-cursor-skills
Execute a user flow step-by-step in Cursor's built-in browser while documenting each action, then emit a Playwright test that replays the same flow using stable selectors derived from the accessibility tree.
playwright-testing
community-access/accessibility-agents
Browser accessibility testing using Playwright and @axe-core/playwright. Keyboard scans, contrast verification, and accessibility tree snapshots.
xpai-doubao-web
hunduncn/xpai-doubao-web
Generate images and text via Doubao Web using browser cookies and Playwright UI automation. Use when a user asks for Doubao Web image generation, prompt-to-image automation, text replies, preset aspect ratios (e.g. 小红书封面), or session-based multi-turn workflows.
gplay-testers-orchestration
tamtom/gplay-cli-skills
Manage testers for Google Play testing tracks (internal, closed alpha/beta, custom) using edit sessions. Use when assigning testers, creating closed tracks, or promoting builds between tracks.
load-test-builder
patricio0312rev/skills
Creates load and performance tests with k6, Artillery, or autocannon to validate system behavior under stress. Use when users request "load testing", "performance testing", "stress testing", "k6 setup", or "benchmark API".
321-frameworks-spring-boot-testing-unit-tests
jabrena/plinth
Use when you need to write unit tests for Spring Boot applications — including pure unit tests with @ExtendWith(MockitoExtension.class) for @Service/@Component, slice tests with @WebMvcTest and @MockitoBean for controllers, @JsonTest for JSON serialization, parameterized tests with @CsvSource/@MethodSource, test profiles, and @TestConfiguration. For framework-agnostic Java use @131-java-testing-unit-testing. For integration tests use @322-frameworks-spring-boot-testing-integration-tests. This should trigger for requests such as Review Java code for Spring Boot unit tests; Apply best practices for Spring Boot unit tests in Java code; Write Mockito-first unit tests for Spring Boot services; Avoid unnecessary @SpringBootTest in Spring unit tests; Review Spring Boot slice-free unit test design. Part of Plinth Toolkit
ecto-patterns
bobmatnyc/claude-mpm-skills
Ecto patterns for Phoenix/Elixir apps. Covers schemas, changesets, migrations, queries, Ecto.Multi, transactions, constraints, associations, pagination, tenant partitioning, performance, and testing.
cointegration-analysis
agiprolabs/claude-trading-skills
Cointegration testing for pairs trading using Engle-Granger, Johansen, and rolling stability analysis
mechanical-engineer
selfdriven-octo/skillzeb
Ability to design, analyse, test, and maintain mechanical systems and components that meet defined functional, safety, and performance requirements. Includes applying engineering principles to materials, structures, thermodynamics, fluid mechanics, and motion systems; producing and interpreting technical designs and specifications; validating designs through analysis and testing; and supporting manufacture, operation, and lifecycle management. Applies across industrial, infrastructure, energy, manufacturing, and product contexts and is independent of specific tools or industries, with human accountability retained for safety, compliance, and outcomes.
accessibility-inspect
accesslint/skills
One page, hands-on manual tier — drive a live page through the web accessibility (a11y) checks a rule engine can't decide: keyboard operation and focus order, screen-reader names, roles and states from the accessibility tree, reflow and zoom, reduced motion, form errors, and target size. Grades each finding by evidence basis (verified / confirm-with-a-human / human-required) and severity, and closes every criterion in a ledger: verified, flagged, not exercised, or N/A. Locates and assesses; does not fix (use `accessibility-fix`). Use it for keyboard testing, focus-order checks, screen-reader or a11y-tree review, reflow and zoom at 200%, or 'is this operable, not just lint-clean'. The automated tier is `accessibility-scan`; `accessibility-audit` runs both across a sampled site.
llm-patterns
alinaqi/maggy
AI-first application patterns, LLM testing, prompt management
132-java-testing-integration-testing
jabrena/plinth
Use when you need to set up, review, or improve Java integration tests — including generating a BaseIntegrationTest.java with WireMock for HTTP stubs, detecting HTTP client infrastructure from import signals, injecting service coordinates dynamically via System.setProperty(), creating WireMock JSON mapping files with bodyFileName, isolating stubs per test method, verifying HTTP interactions, or eliminating anti-patterns such as Mockito-mocked HTTP clients or globally registered WireMock stubs. This should trigger for requests such as Review Java code for integration tests; Apply best practices for integration tests in Java code; Write Java integration tests with real infrastructure boundaries; Improve Testcontainers integration tests for Java code; Review integration test setup and teardown in Java projects. Part of Plinth Toolkit
api-test-suite-generator
patricio0312rev/skills
Generates comprehensive API test suites using Jest, Vitest, or Supertest from Express, Next.js, Fastify, or other API routes. Creates integration tests, contract tests, and edge case coverage. Use when users request "generate api tests", "create endpoint tests", "api test suite", or "integration tests for api".
hormozi-ad-factory
pedronauck/skills
Generates 150-750+ ad variations using Alex Hormozi's combinatorial Hook x Meat x CTA framework. Triggers on requests to create ads, ad copy, ad scripts, marketing creatives, video ad scripts, ad hooks, CTAs, ad testing, ad scaling, or ad factories. Also triggers on mentions of Hormozi's ad method or combinatorial ad creation. Does not trigger for general copywriting, email marketing, landing pages, or non-advertising content.
qa-testing-mobile
vasilyu1983/ai-agents-public
Mobile QA for iOS and Android. Use when planning automation frameworks, device matrix, flake control, or CI/CD release gates.
secure-headers-csp-builder
patricio0312rev/skills
Implements security headers and Content Security Policy with safe rollout strategy (report-only → enforce), testing, and compatibility checks. Use for "security headers", "CSP", "HTTP headers", or "XSS protection".
cloudflare-workers-testing
secondsky/claude-skills
Comprehensive testing guide for Cloudflare Workers using Vitest and @cloudflare/vitest-pool-workers. Use for test setup, binding mocks (D1/KV/R2/DO), integration tests, or encountering test failures, mock errors, coverage issues.
cypress-playwright-setup
patricio0312rev/skills
Sets up end-to-end testing with Cypress or Playwright including page objects, fixtures, and CI integration. Use when users request "E2E testing", "Cypress setup", "Playwright setup", "browser testing", or "integration tests".
testing-for-host-header-injection
mukul975/anthropic-cybersecurity-skills
Test web applications for HTTP Host header injection vulnerabilities
swift-testing
bocato/swift-testing-agent-skill
Expert guidance on Swift Testing best practices, patterns, and implementation. Use when developers mention: (1) Swift Testing, @Test, #expect, #require, or @Suite, (2) "use Swift Testing" or "modern testing patterns", (3) test doubles, mocks, stubs, spies, or fixtures, (4) unit tests, integration tests, or snapshot tests, (5) migrating from XCTest to Swift Testing, (6) TDD, Arrange-Act-Assert, or F.I.R.S.T. principles, (7) parameterized tests or test organization.
pytest
gentleman-programming/gentleman-skills
>
curl-command-generator
patricio0312rev/skills
Generates ready-to-run cURL commands from Express, Next.js, Fastify, or other API routes. Creates copy-paste commands with proper headers, authentication, and request bodies. Use when users request "generate curl commands", "curl examples", "api curl", or "command line api testing".
151-java-performance-jmeter
jabrena/plinth
Use when you need to set up JMeter performance testing for a Java project — including creating the run-jmeter.sh script from the exact template, configuring load tests with loops, threads, and ramp-up, or running performance tests from the project root with custom or default settings. This should trigger for requests such as Improve the code with JMeter performance testing; Apply JMeter performance testing; Refactor the code with JMeter performance testing; Add JMeter support; Create a JMeter test plan for a Java service. Part of Plinth Toolkit
ios-xcode
pproenca/dot-skills
Xcode setup and tooling guidance for iOS 26 / Swift 6.2 clinic modular MVVM-C projects covering project configuration, SwiftData container wiring, testing, debugging, profiling, and distribution workflows. Use when configuring App-target infrastructure or day-to-day tooling around clinic architecture modules.
gpui
longbridge/gpui-component
GPUI framework knowledge covering actions/keybindings, async/background tasks, context management (App/Window/Context<T>/AsyncApp), custom elements (low-level Element trait), entity state management, event system, focus handling, global state, layout/styling (flexbox/CSS-like), and testing. Use when working with any GPUI framework concept, building GPUI applications, or needing guidance on GPUI-specific APIs and patterns.
vibe-trading
hkuds/vibe-trading
Professional finance research toolkit — backtesting (10 engines + benchmark comparison panel), factor analysis, Alpha Zoo (462 pre-built alphas across qlib158/alpha101/gtja191/academic/fundamental), options pricing, 90 finance skills, 30 multi-agent swarm teams, Trade Journal analyzer, and Shadow Account (extract → backtest → render) across 25 market-data sources (tushare, yfinance, okx, binance, akshare, baostock, tencent, mootdx, ccxt, futu, mt5, tickerall, local, eastmoney, sina, stooq, yahoo, pykrx, india_broker, qveris, longbridge, plus optional-key finnhub/alphavantage/tiingo/fmp).
adding-feature-flags
spencerpauly/awesome-cursor-skills
Add feature flags to an application for gradual rollouts, A/B testing, and kill switches using PostHog, LaunchDarkly, or a simple local implementation.
checking-devops-prerequisites
forcedotcom/sf-skills
Validate the environment before any DevOps Center pipeline testing action: confirms an authenticated Salesforce org, the Agentforce DX plugin, an authenticated DevOps Center org, and an identified pipeline (and optionally a pipeline stage). Use this FIRST, internally, from any DevOps testing skill (running a test suite, polling results, syncing tests, configuring or retriggering a quality gate, assigning/mapping suites, creating fix work items, recommending tests, explaining coverage, analyzing failures). TRIGGER when another DevOps testing skill needs to confirm org/pipeline context before a query or system call. DO NOT TRIGGER for non-DevOps-Center work.
accelint-react-testing
gohypergiant/agent-skills
Use when writing, reviewing, or refactoring React component tests with Testing Library. Load when you see render(), screen, fireEvent, userEvent, waitFor, or *.test.tsx files. Covers query priority (getByRole > getByLabelText > getByText), user-centric testing patterns, async utilities, custom renders with providers, and accessibility-first assertions. Keywords include RTL, Testing Library, screen, getByRole, findBy, queryBy, userEvent, waitFor, toBeInTheDocument, testing-library/react, testing-library/user-event, jest-dom.
axiom-ios-testing
charleswiltgen/axiom
Use when writing ANY test, debugging flaky tests, making tests faster, or asking about Swift Testing vs XCTest. Covers unit tests, UI tests, fast tests without simulator, async testing, test architecture.
rails-testing
pproenca/dot-skills
Ruby on Rails testing best practices for writing effective, maintainable test suites with RSpec. This skill should be used when writing, reviewing, or refactoring Rails tests to ensure proper test design, data management, and coverage patterns. Triggers on tasks involving RSpec specs, model tests, request specs, system tests, factory definitions, Capybara interactions, Sidekiq job tests, or test suite optimization. Complementary to rails-dev, ruby-optimise, and ruby-refactor skills.
322-frameworks-spring-boot-testing-integration-tests
jabrena/plinth
Use when you need to write or improve integration tests — including Testcontainers with @ServiceConnection, @DataJdbcTest persistence slices, TestRestTemplate or MockMvcTester for HTTP, data isolation, and container lifecycle management for Spring Boot 4.0.x. This should trigger for requests such as Review Java code for Spring Boot integration tests; Apply best practices for Spring Boot integration tests in Java code; Write @SpringBootTest integration tests with Testcontainers; Configure dynamic properties for Spring integration tests; Review Spring Boot integration test profiles. Part of Plinth Toolkit
ratings-snapshot
octagonai/skills
Retrieve ratings snapshot with overall rating and key metric scores including DCF, ROE, ROA, Debt-to-Equity, P/E, and P/B for public companies. Use when screening stocks, comparing quality metrics, or quick fundamental assessment.
python
alinaqi/maggy
Python development with ruff, mypy, pytest - TDD and type safety
api-mock-server
patricio0312rev/skills
Creates mock API servers for testing and development with MSW, json-server, or custom handlers. Use when users request "API mocking", "mock server", "MSW setup", "test fixtures", or "mock API responses".
adaptyv
davila7/claude-code-templates
Cloud laboratory platform for automated protein testing and validation. Use when designing proteins and needing experimental validation including binding assays, expression testing, thermostability measurements, enzyme activity assays, or protein sequence optimization. Also use for submitting experiments via API, tracking experiment status, downloading results, optimizing protein sequences for better expression using computational tools (NetSolP, SoluProt, SolubleMPNN, ESM), or managing protein design workflows with wet-lab validation.
cloudflare-workers-ci-cd
secondsky/claude-skills
Complete CI/CD guide for Cloudflare Workers using GitHub Actions and GitLab CI. Use for automated testing, deployment pipelines, preview environments, secrets management, or encountering deployment failures, workflow errors, environment configuration issues.
vitest-skill
lambdatest/agent-skills
>
mem0-test-integration
mem0ai/mem0
>
test-coverage
cognitedata/dune-skills
MUST be used whenever fixing test coverage for a Dune app to meet the 80% line coverage hard gate. This skill finds AND fixes coverage gaps — it configures tooling, writes missing tests, covers untested paths, and refactors code for testability. It does not just report. Triggers: test coverage, fix tests, write tests, add tests, coverage fix, 80% coverage, coverage gate, missing tests, testability, vitest coverage, jest coverage.
encore-go-testing
encoredev/skills
Write or run automated tests for Encore Go code with `encore test` and the standard library `testing` package. Covers isolated per-test databases, calling handlers directly, and `*testing.T` patterns.
311-frameworks-spring-jdbc
jabrena/plinth
Use when you need to write or review programmatic JDBC with Spring — including JdbcClient (Spring Framework 7+) as the default API, JdbcTemplate only where batch/streaming APIs require JdbcOperations, NamedParameterJdbcTemplate for legacy named-param code, parameterized SQL, RowMapper mapping to records, batch operations, transactions, safe handling of generated keys, DataAccessException handling, read-only transactions, streaming large result sets, and @JdbcTest slice testing. This should trigger for requests such as Review Java code for Spring JDBC (JdbcTemplate, JdbcClient, NamedParameterJdbcTemplate); Apply best practices for Spring JDBC data access in Java code; Detect and fix SQL injection risks in JDBC code; Improve transaction boundaries or exception handling for JDBC operations; Review JdbcClient usage in Spring Framework 7. Part of Plinth Toolkit
catalyst-functions
catalystbyzoho/agent-skills
Catalyst serverless functions — all 7 types (Basic I/O, Advanced I/O, Event, Cron, Job, Integration, Browser Logic), handler signatures, catalyst-config.json, Security Rules, API Gateway routing, file uploads, busboy, Express middleware, environment variables, function URL, and function testing. Requires MCP connection — check for CatalystbyZoho_* tools before any operation. Trigger on 'write a function', 'catalyst function', 'API Gateway', 'Security Rules', 'function not found', 'function returns 401', 'busboy', 'middleware', 'function URL', 'environment variable in function', 'duplicate CORS headers', 'CORS error in browser', 'Access-Control-Allow-Origin multiple values', 'function URL 404', 'execute suffix', 'function timeout', 'function hangs', or any function type question. Do NOT use for persistent servers, long-running processes, or Docker deployments — use catalyst-appsail instead.
