2,373 free skills
Skills for writing and running tests — framework-specific patterns for Jest, Vitest, pytest, Go testing, RSpec, JUnit, Playwright, Cypress, and more.
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15 tools across six categories
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golang-pro
giulianotesta7/glpictl-ai
Implements concurrent Go patterns using goroutines and channels, designs and builds microservices with gRPC or REST, optimizes Go application performance with pprof, and enforces idiomatic Go with generics, interfaces, and robust error handling. Use when building Go applications requiring concurrent programming, microservices architecture, or high-performance systems. Invoke for goroutines, channels, Go generics, gRPC integration, CLI tools, benchmarks, or table-driven testing.
testing
mhyrr/hive
Elixir testing patterns — ExUnit, Mox, factories, LiveView test helpers. Use when working on *_test.exs, test/support/, factory files, or fixing test failures.
golang-pro
hvantoan/claude-skillpack
Implements concurrent Go patterns using goroutines and channels, designs and builds microservices with gRPC or REST, optimizes Go application performance with pprof, and enforces idiomatic Go with generics, interfaces, and robust error handling. Use when building Go applications requiring concurrent programming, microservices architecture, or high-performance systems. Invoke for goroutines, channels, Go generics, gRPC integration, CLI tools, benchmarks, or table-driven testing.
golang-pro
mdhb2/aix-skillpack
Implements concurrent Go patterns using goroutines and channels, designs and builds microservices with gRPC or REST, optimizes Go application performance with pprof, and enforces idiomatic Go with generics, interfaces, and robust error handling. Use when building Go applications requiring concurrent programming, microservices architecture, or high-performance systems. Invoke for goroutines, channels, Go generics, gRPC integration, CLI tools, benchmarks, or table-driven testing.
ruby-rails
shahboura/agents-opencode
Ruby on Rails best practices with MVC, ActiveRecord, and testing
react-router-template-dep-bump
remix-run/react-router-templates
Update pinned react-router and @react-router package versions in the remix-run/react-router-templates repo, refresh the pnpm lockfile, and verify with the Playwright suite in .tests.
ruby-programming
jtgrenz/ruby-programming
Use when writing, reviewing, or refactoring Ruby code, Rails controllers, ActiveRecord models, RSpec specs, service objects, or background jobs. Also use when reviewing PRs that contain Ruby changes. Triggers on Ruby, Rails, RSpec, ActiveRecord, Sorbet, RuboCop, Sidekiq, Puma.
ruby
jcchikikomori/skills-md
Ruby coding standards following RuboCop, guard clauses, TDD with RSpec, and OWASP security principles.
php-the-right-way
masterfermin02/agent-skills
PHP best practices skill based on phptherightway.com. Use whenever writing, reviewing, or refactoring PHP code to ensure it follows modern PHP standards and idioms. Triggers on: writing PHP code, reviewing PHP files, asking about PHP best practices, PHP code style (PSR-1/PSR-12/PSR-4), PHP OOP patterns, namespaces, Composer, dependency management, security (XSS, CSRF, SQL injection, password hashing), error handling, testing (PHPUnit/Pest), templating, databases, design patterns (Factory, Singleton, MVC, Strategy), functional PHP, or any question about 'the right way' to do something in PHP.
node
hsienw/chat-gun-react-agent
Provides domain-specific best practices for Node.js development with TypeScript, covering type stripping, async patterns, error handling, streams, modules, testing, performance, caching, logging, and more. Use when setting up Node.js projects with native TypeScript support, configuring type stripping (--experimental-strip-types), writing Node 22+ TypeScript without a build step, or when the user mentions 'native TypeScript in Node', 'strip types', 'Node 22 TypeScript', '.ts files without compilation', 'ts-node alternative', or needs guidance on error handling, graceful shutdown, flaky tests, profiling, or environment configuration in Node.js. Helps configure tsconfig.json for type stripping, set up package.json scripts, handle module resolution and import extensions, and apply robust patterns across the full Node.js stack.
node
taidaid/node-skills
Provides domain-specific best practices for Node.js development with TypeScript, covering type stripping, async patterns, error handling, streams, modules, testing, performance, caching, logging, and more. Use when setting up Node.js projects with native TypeScript support, configuring type stripping (--experimental-strip-types), writing Node 22+ TypeScript without a build step, or when the user mentions 'native TypeScript in Node', 'strip types', 'Node 22 TypeScript', '.ts files without compilation', 'ts-node alternative', or needs guidance on error handling, graceful shutdown, flaky tests, profiling, or environment configuration in Node.js. Helps configure tsconfig.json for type stripping, set up package.json scripts, handle module resolution and import extensions, and apply robust patterns across the full Node.js stack.
context-testing-context-load-testing-deno
codeferreira/dotfiles
Load comprehensive Deno testing documentation context with project-specific optimization
deno-developer
grant-wilson/agent-skills
Deno standards — JSR and @std dependencies pinned in the deno.json import map, the built-in toolchain (fmt, lint, check, test, task), web-platform and Deno-native APIs over node compat, least-privilege permission flags with no --allow-all, deliberate module surfaces, @std/testing for BDD tests, fake time, and mocks, and how to scope Deno's tooling and VS Code extension in a repository shared with another toolchain such as Angular. Use when writing or reviewing code in a project that contains deno.json or deno.jsonc, and when deciding which formatter or linter owns a directory in a mixed Deno repository.
bun
tifandotme/hevy-cli
Use when building JavaScript/TypeScript applications, running scripts, managing packages, testing code, or bundling for production. Bun is an all-in-one toolkit that replaces Node.js, npm, Jest, and esbuild with a single fast binary.
express-testing
nitdraig/my-cursor-skills
Write and review Express.js API tests with supertest — routes, middleware, validation, authentication, error handling, and Mongoose service mocks. Use when adding Express tests, improving API coverage, or debugging failing backend tests.
django-pro
mishit18/claude-code-templates
Master Django 5.x with async views, DRF, Celery, and Django Channels. Build scalable web applications with proper architecture, testing, and deployment.
django-pro
newmindsgroup/ai-agent-skills-library
Master Django 5.x with async views, DRF, Celery, and Django Channels. Build scalable web applications with proper architecture, testing, and deployment.
django-pro
hainamchung/agent-assistant
Master Django 5.x with async views, DRF, Celery, and Django Channels. Build scalable web applications with proper architecture, testing, and deployment.
flow-code-django
z23cc/flow-code
Use when working on Django projects — architecture, DRF APIs, ORM patterns, security, testing, and deployment verification. Triggers on Django-related tasks.
django-pro
laithalenooz/claude
Master Django 5.x with async views, DRF, Celery, and Django Channels. Build scalable web applications with proper architecture, testing, and deployment.
python-weapon
jzferrell26/dm-skills
Reviews, refactors, and authors modern Python codebases (Django, FastAPI, Celery, Channels, scripting, packaging, data) using a canonical opinionated stack — Django Ninja over DRF, Celery + Redis for jobs, Channels for realtime, pytest + factory_boy for tests, uv for packaging, Pydantic v2 at boundaries, Ruff and pyright for quality. Use when the user says "review this Python code", "Django app review", "audit this Django app", "ORM audit", "fix N+1", "DRF to Ninja migration", "Celery refactor", "Channels enablement", "pytest setup", "type-adoption plan", "Ruff config", "uv migration", "settings split", "async refactor", "Django + React audit", "Python scripting / packaging help", or when `python-guardian` is invoked. Do NOT use for React component shape (react-guardian), DB schema design / indexing / partitioning (db-guardian), security audit (security-guardian), auth provider choice / OAuth flow (auth-guardian), Stripe SDK design (payments-guardian), AI cognitive infra / RAG / coaches / evals (mind-guardian), Docker pipelines / CI / cloud deploys (devops-guardian), or PRD authoring (library-guardian).
code-like-djangonaut
miratcan/claude-skills
Provides Django web framework expertise including project structure, models, views, admin, Celery tasks, testing, and Python best practices. Use when generating, analyzing, refactoring, or reviewing Django/Python code.
django-testing
criscandv/cdv-skills
The testing discipline for a Django + DRF API — pytest, pytest-django, factory-boy and coverage, the test-first (TDD) loop, fixtures and factories, and what to assert at each layer (models, serializers, endpoints). Use this skill whenever you write or run tests for a Django backend, set up the test suite, add factories or fixtures, debug a failing test, or decide what a feature's tests should cover. Trigger it whenever a task involves tests, pytest, factory-boy, coverage, TDD, conftest or fixtures, even if not named explicitly. It is the testing companion to django-conventions (the rules), django-orm-patterns (models), django-rest-framework (API) and django-cbv-patterns (views).
flask-testing-patterns
jcorpac/ai-skills-library
Rigorous testing of Flask applications using Pytest and professional mocking strategies.
pr-reviewer
darshandesk/python-copilot-agent-poc
Use when reviewing a pull request, doing code review, assessing code quality, checking unit test coverage, identifying missing tests, evaluating test completeness, checking Flask best practices, BigQuery integration, 12-factor compliance, microservices patterns, or SonarQube concerns. Trigger phrases: review PR, code review, check tests, unit test coverage, review changes, review my code, flask review, sonar review.
flask-quality
morodomi/tdd-skills
Flask品質チェック。pytest-flask/mypy/Black実行時に使用。「Flaskの品質チェック」「Flask テスト」で起動。
rails
damacus/skills
Comprehensive Ruby on Rails v8.1 development guide with detailed documentation for Active Record, controllers, views, routing, testing, jobs, mailers, and more. Use when working on Rails applications, building Rails features, debugging Rails code, writing migrations, setting up associations, configuring Rails apps, or answering questions about Rails best practices and patterns.
dhh-rails-reviewer
udecode/better-convex
Brutally honest Rails code review from DHH's perspective. Use when reviewing Rails code for anti-patterns, JS framework contamination, or violations of Rails conventions.
spring-security
rynr/spring-skills
Guide Spring Security configuration including OAuth2 Resource Server, JWT, SecurityFilterChain, method security, and CORS. Use when securing Spring Boot APIs, configuring authentication/authorization, or testing secured endpoints.
spring-testing
rynr/spring-skills
Guide Spring Boot testing strategies including test slices, MockMvc, WebTestClient, Testcontainers, Spock, and reactive testing. Use when writing or improving tests for Spring applications.
terraform-engineer
yo-steven/claude-skills-exploration-20260522
Use when implementing infrastructure as code with Terraform across AWS, Azure, or GCP. Invoke for module development (create reusable modules, manage module versioning), state management (migrate backends, import existing resources, resolve state conflicts), provider configuration, multi-environment workflows, and infrastructure testing.
terraform-engineer
zroman88/claude-skills-to-cursor
Use when implementing infrastructure as code with Terraform across AWS, Azure, or GCP. Invoke for module development (create reusable modules, manage module versioning), state management (migrate backends, import existing resources, resolve state conflicts), provider configuration, multi-environment workflows, and infrastructure testing.
terraform-engineer
firstsun-dev/skills
Use when implementing infrastructure as code with Terraform across AWS, Azure, or GCP. Invoke for module development (create reusable modules, manage module versioning), state management (migrate backends, import existing resources, resolve state conflicts), provider configuration, multi-environment workflows, and infrastructure testing.
terraform-engineer
thienanthx/skill-web-design
Use when implementing infrastructure as code with Terraform across AWS, Azure, or GCP. Invoke for module development (create reusable modules, manage module versioning), state management (migrate backends, import existing resources, resolve state conflicts), provider configuration, multi-environment workflows, and infrastructure testing.
terraform-engineer
coopyrightdmin/claude-skills
Use when implementing infrastructure as code with Terraform across AWS, Azure, or GCP. Invoke for module development, state management, provider configuration, multi-environment workflows, infrastructure testing.
ansible
ilude/dotfiles
Ansible automation, playbooks, and configuration management. Activate when working with Ansible YAML files, playbooks, inventory files, roles, handlers, or discussing Ansible patterns, ansible-playbook, ansible-lint, molecule testing, or Ansible Galaxy.
test-with-postgres
storj/storj
Run unit tests that require PostgreSQL. Use this skill when the user wants to run tests with PostgreSQL database backend. Automatically handles checking for and configuring a PostgreSQL Docker container.
gemini-cli
anortham/razorback
Call Google's Gemini CLI as an assistant for second opinions, task delegation, code review, web research, and codebase analysis. Use this skill whenever the user says "ask gemini", "get gemini's take", "have gemini look at this", "delegate to gemini", "run gemini", "gemini review", or any variation suggesting they want Gemini's perspective or help. Also trigger when the user wants current web information (Gemini has Google Search built in), codebase architecture analysis, or a fresh take from a different model.
vela-services
ryanmr/vela-skills
Service containers for integration testing in Vela: Postgres, Redis, MySQL, Elasticsearch. Covers the services key, networking by container name, readiness checks, and detached steps.
podman-testing
akarazhev/crypto-scout-test
Podman Compose integration testing patterns for TimescaleDB and RabbitMQ container management
graphql
mohdhaji87/payloadsallthethings-skills
GraphQL injection, introspection abuse, batching attacks, and authorization bypass. Use for GraphQL API testing.
graphql-audit
h-mmer/pentest-agents
GraphQL API security specialist. Use for introspection analysis, query complexity attacks, injection testing, authorization bypass, and batching abuse on GraphQL endpoints.
grpc-mock
testland/qa
Wraps gRPC server-mocking patterns for client-side tests: Go bufconn (in-memory net.Listener via google.golang.org/grpc/test/bufconn) + mockgen-generated interface mocks, Python pytest-grpc fixtures + unittest.mock patching of stubs, JVM grpc-mock library / in-process gRPC server (InProcessServerBuilder), Node @grpc/grpc-js fake server with NewServer-on-port-0. Use when writing client-side tests that need a controllable gRPC server response (success cases, error cases per grpc-status-code-mapping-reference, timeouts, and single-response error injection) without spinning up a real backend. For multi-message streaming-sequence tests (server-streaming, bidi), use grpc-streaming-test-author instead. Distinct from grpcurl-cli (ad-hoc CLI invocation against a real server) and ghz-load (perf against a real server).
grpc-interceptor-test-author
testland/qa
Authors unit tests for gRPC interceptor logic: Go grpc.UnaryServerInterceptor/UnaryClientInterceptor, Java ServerInterceptor/ClientInterceptor, and grpc-js client interceptors. Covers auth (Unauthenticated on bad token), retry (backoff on Unavailable), logging/tracing (metadata extraction + propagation), error-mapping (status translation), and chained interceptor ordering - by calling the interceptor directly with a spy handler, no live backend. Use when a gRPC interceptor is written or modified. Different test surface from grpc-streaming-test-author (multi-message stream sequences) and grpc-mock (service handler logic) - use those, not this, for streams or handlers.
golang-grpc
mgrubb/agent-skills-golang
Provides gRPC usage guidelines, protobuf organization, and production-ready patterns for Golang microservices. Use when implementing, reviewing, or debugging gRPC servers/clients, writing proto files, setting up interceptors, handling gRPC errors with status codes, configuring TLS/mTLS, testing with bufconn, or working with streaming RPCs.
golang-grpc
adibfirman/dotfiles
Provides gRPC usage guidelines, protobuf organization, and production-ready patterns for Golang microservices. Use when implementing, reviewing, or debugging gRPC servers/clients, writing proto files, setting up interceptors, handling gRPC errors with status codes, configuring TLS/mTLS, testing with bufconn, or working with streaming RPCs.
grpcurl-cli
testland/qa
Wraps grpcurl, the curl-equivalent CLI for gRPC. Covers descriptor sources (server reflection default, --import-path + --proto for proto files, --protoset for compiled descriptor sets), service discovery (`list`, `describe`), invoking unary RPCs (`-d '{...}'`, `-d @file.json`, `-d @` for stdin), streaming RPCs (newline-delimited JSON via stdin), TLS configuration (--cacert, --cert, --key, --insecure, --plaintext), header injection (-H 'Authorization: Bearer ...'), and exit codes. Use for ad-hoc gRPC debugging, smoke testing, scriptable PR-time gates, and CLI-based interaction with reflective gRPC services.
dotnet-openapi-discovery
burgyn/mmlib.agentskills
Discover current OpenAPI documentation for .NET WebAPI endpoints. Use when agent needs to find OpenAPI documentation, create requests in .http files, or test endpoints. The skill can start the service if not running, download OpenAPI JSON, and generate VS Code REST Client format requests or curl commands for testing.
playwright-trace
dqtx760/skills-manage
Inspect Playwright trace files from the command line — list actions, view requests, console, errors, snapshots and screenshots.
playwright-trace
endformdev/playwright
Inspect Playwright trace files from the command line — list actions, view requests, console, errors, snapshots and screenshots.
use-profiles
vanya2h/sheafu
This skill should be used when performing browser automation with Playwright MCP in a project that has `.playwright/profiles.json`, when the user mentions "use profile", "load profile", "browser as admin", "test as user", "browse as [role]", "switch profile", "authenticated browser", "logged in browser session", "open the site logged in", or when about to navigate to an authenticated page. Loads saved Playwright storageState authentication profiles so browser sessions start already logged in.
oauth
mohdhaji87/payloadsallthethings-skills
OAuth misconfiguration exploitation - redirect_uri, state bypass, token theft. Use for OAuth flow testing.
playwright-oauth-code-capture
strataga/claude-setup
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runtime-google-cloud-functions
ortus-boxlang/skills
Use this skill when building, testing, or deploying BoxLang applications on Google Cloud Functions Gen 2, including handler structure, FunctionRunner entry point, URI routing, environment variables, local development with the GCF invoker, and debugging.
privacy-review
shiplightai/claude-code-plugin
Privacy review and testing: evaluate PII handling, data flows, tracking inventory, consent mechanisms, storage practices, and data leakage risks with browser-based validation against GDPR, CCPA, and industry best practices.
ai-model-privacy-audit
onfire7777/universal-ai-skills-library
Conducts privacy auditing of AI models including training data extraction testing, membership inference attacks, model inversion testing, and attribute inference assessment. Uses ML Privacy Meter and related tools to quantify privacy leakage. Keywords: model audit, membership inference, privacy meter, model inversion, training data extraction.
python-engineering
mogassama/pi-agent-config
Load for Python authoring, refactoring, packaging, or testing. Covers uv project setup, strict type hints, Loguru logging, pytest patterns, and data engineering idioms (streaming, chunking, GCP clients). Auto-load when the task involves .py files, pyproject.toml, test writing, or Python package structure.
landing-craft
eliasoulkadi/shokunin
Build conversion-optimized landing pages with CRO frameworks (Conversion Research, LIFT Model), scroll effects, A/B testing, personalization, form optimization, and Core Web Vitals (INP, LCP, CLS). Use when user asks to create a landing page, sales page, lead generation page, or improve conversion rates. Do NOT use for full product design (use component-forge), animation-specific (use motion-craft), or brand identity (use design).
stripe-cli
felipeoff/skills
Stripe CLI operations for local development, webhook testing, fixture-based event simulation, API inspection, and sandbox resource management. Use when installing or verifying stripe CLI, logging in, forwarding webhook events (`stripe listen --forward-to`), triggering test events (`stripe trigger`), replaying/resending events, tailing request logs, or performing safe subscription/checkout debugging in Stripe sandbox environments.
account-takeover
mohdhaji87/payloadsallthethings-skills
Account takeover techniques via password reset poisoning, OAuth flaws, and session manipulation. Use for auth testing.
