dotnet-backend-patterns
wshobsonMaster C#/.NET backend development patterns for building robust APIs, MCP servers, and enterprise applications. Covers async/await, dependency injection, Entity Framework Core, Dapper, configuration, caching, and testing with xUnit. Use when developing .NET backends, reviewing C# code, or designing API architectures.
testing-python
jlowinWrite and evaluate effective Python tests using pytest. Use when writing tests, reviewing test code, debugging test failures, or improving test coverage. Covers test design, fixtures, parameterization, mocking, and async testing.
backend-dev-guidelines
langfuseComprehensive backend development guide for Langfuse's Next.js 14/tRPC/Express/TypeScript monorepo. Use when creating tRPC routers, public API endpoints, BullMQ queue processors, services, or working with tRPC procedures, Next.js API routes, Prisma database access, ClickHouse analytics queries, Redis queues, OpenTelemetry instrumentation, Zod v4 validation, env.mjs configuration, tenant isolation patterns, or async patterns. Covers layered architecture (tRPC procedures → services, queue processors → services), dual database system (PostgreSQL + ClickHouse), projectId filtering for multi-tenant isolation, traceException error handling, observability patterns, and testing strategies (Jest for web, vitest for worker).
backend-dev-guidelines
davila7Comprehensive backend development guide for Node.js/Express/TypeScript microservices. Use when creating routes, controllers, services, repositories, middleware, or working with Express APIs, Prisma database access, Sentry error tracking, Zod validation, unifiedConfig, dependency injection, or async patterns. Covers layered architecture (routes → controllers → services → repositories), BaseController pattern, error handling, performance monitoring, testing strategies, and migration from legacy patterns.
temporal-python-pro
sickn33Master Temporal workflow orchestration with the Python SDK. Implements durable workflows, saga patterns, and distributed transactions. Covers async/await, testing strategies, and production deployment.
csharp-pro
sickn33Write modern C# code with advanced features like records, pattern matching, and async/await. Optimizes .NET applications, implements enterprise patterns, and ensures comprehensive testing.
django-pro
sickn33Master Django 5.x with async views, DRF, Celery, and Django Channels. Build scalable web applications with proper architecture, testing, and deployment.
gpui-test
longbridgeWriting tests for GPUI applications. Use when testing components, async operations, or UI behavior.
python-skills
llama-farmShared Python best practices for LlamaFarm. Covers patterns, async, typing, testing, error handling, and security.
moai-lang-python
modu-aiPython 3.13+ development specialist covering FastAPI, Django, async patterns, data science, testing with pytest, and modern Python features. Use when developing Python APIs, web applications, data pipelines, or writing tests.
cloudflare-vectorize
jezwebBuild semantic search with Cloudflare Vectorize V2. Covers async mutations, 5M vectors/index, 31ms latency, returnMetadata enum changes, and V1 deprecation. Prevents 14 errors including dimension mismatches, TypeScript types, testing setup. Use when: building RAG or semantic search, troubleshooting returnMetadata, V2 timing, metadata index, dimension errors, vitest setup, or wrangler --json output.
python-scala-libraries
benchflow-aiGuide for mapping common Python libraries and idioms to Scala equivalents. Use when converting Python code that uses standard library modules (json, datetime, os, re, logging) or needs equivalent Scala libraries for HTTP, testing, or async operations.
axiom-testing-async
Use when testing async code with Swift Testing. Covers confirmation for callbacks, @MainActor tests, async/await patterns, timeout control, XCTest migration, parallel test execution.
axiom-ios-testing
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.
axiom-swift-testing
Use when writing unit tests, adopting Swift Testing framework, making tests run faster without simulator, architecting code for testability, testing async code reliably, or migrating from XCTest - covers @Test/@Suite macros,
tanstack-query
MadAppGangComprehensive TanStack Query v5 patterns for async state management. Covers breaking changes, query key factories, data transformation, mutations, optimistic updates, authentication, testing with MSW, and anti-patterns. Use for all server state management, data fetching, and cache invalidation tasks.
asyncredux-navigation
marcglasbergHandle navigation through actions using NavigateAction. Covers setting up the navigator key, dispatching NavigateAction for push/pop/replace, and testing navigation in isolation.
asyncredux-testing-wait-methods
marcglasbergUse advanced wait methods for complex test scenarios. Covers `waitCondition()`, `waitAllActions()`, `waitActionType()`, `waitAllActionTypes()`, `waitAnyActionTypeFinishes()`, and the `completeImmediately` parameter.
asyncredux-testing-view-models
marcglasbergTest StoreConnector view-models in isolation. Covers creating view-models with `Vm.createFrom()`, testing view-model properties, testing callbacks that dispatch actions, and verifying state changes from callbacks.
asyncredux-testing-basics
marcglasbergWrite unit tests for AsyncRedux actions using the Store directly. Covers creating test stores with initial state, using `dispatchAndWait()`, checking state after actions, verifying action errors via ActionStatus, and testing async actions.
fastapi-development
aiskillstoreBuild async APIs with FastAPI, including endpoints, dependency injection, validation, and testing. Use when creating REST APIs, web backends, or microservices.
testing-ai-agents
panaversityUse when testing AI agent code with pytest. Covers TDD for agent APIs, mocking LLM calls (NOT evaluating LLM outputs), pytest-asyncio patterns, FastAPI testing with httpx, SQLModel testing, and agent tool testing. NOT for evaluating LLM reasoning quality (use evals skill).
backend-dev-guidelines
MicrockComprehensive backend development guide for Langfuse's Next.js 14/tRPC/Express/TypeScript monorepo. Use when creating tRPC routers, public API endpoints, BullMQ queue processors, services, or working with tRPC procedures, Next.js API routes, Prisma database access, ClickHouse analytics queries, Redis queues, OpenTelemetry instrumentation, Zod v4 validation, env.mjs configuration, tenant isolation patterns, or async patterns. Covers layered architecture (tRPC procedures → services, queue processors → services), dual database system (PostgreSQL + ClickHouse), projectId filtering for multi-tenant isolation, traceException error handling, observability patterns, and testing strategies (Jest for web, vitest for worker).
unit-test-application-events
giuseppe-trisciuoglioProvides patterns for testing Spring application events (ApplicationEvent) with @EventListener and ApplicationEventPublisher. Handles event publishing, listening, and async event handling in Spring Boot applications. Use when validating event-driven workflows in your Spring Boot services.
unit-test-scheduled-async
giuseppe-trisciuoglioProvides patterns for unit testing scheduled and async tasks using @Scheduled and @Async. Handles mocking task execution and timing. Use when validating asynchronous operations and scheduling behavior.
ring:production-readiness-audit
LerianStudioComprehensive Ring-standards-aligned 44-dimension production readiness audit. Detects project stack, loads Ring standards via WebFetch, and runs in batches of 10 explorers appending incrementally to a single report file. Categories - Structure (pagination, errors, routes, bootstrap, runtime, core deps, naming, domain modeling, nil-safety, api-versioning, resource-leaks), Security (auth, IDOR, SQL, validation, secret-scanning, data-encryption, multi-tenant, rate-limiting, cors), Operations (telemetry, health, config, connections, logging, resilience, graceful-degradation), Quality (idempotency, docs, debt, testing, dependencies, performance, concurrency, migrations, linting, caching), Infrastructure (containers, hardening, cicd, async, makefile, license). Produces scored report (0-430, max 440 with multi-tenant) with severity ratings and standards cross-reference.
jest
partme-aiProvides comprehensive guidance for Jest testing framework including test writing, matchers, async testing, mocking, snapshots, configuration, and CLI. Use when the user asks about Jest, needs to write JavaScript/TypeScript tests, mock dependencies, or configure Jest for projects.
apex-test-class
forcedotcomApex test class generation with TestDataFactory patterns, bulk testing (200+ records), mocking strategies for callouts and async operations, and assertion best practices. Use when creating new Apex test classes, improving test coverage, refactoring existing tests, or implementing proper testing patterns for triggers, services, controllers, batch jobs, queueables, and integrations.
mocha-fundamentals
TheBushidoCollectiveUse when mocha test structure, hooks, and async testing patterns for JavaScript testing.
Jest Unit Testing
PramodDuttaUnit testing skill using Jest for TypeScript and JavaScript, covering mocking, spies, snapshots, coverage, async testing, and custom matchers.
FastAPI Testing Patterns
PramodDuttaFastAPI application testing with TestClient, dependency injection overrides, async testing, database testing with SQLAlchemy, and OpenAPI validation.
Race Condition Finder
PramodDuttaDetect and diagnose race conditions in web applications through concurrent interaction testing, state mutation analysis, and timing-sensitive scenario reproduction.
Swift Testing Patterns
PramodDuttaSwift testing with XCTest, Swift Testing framework, async/await testing, SwiftUI preview testing, and performance measurement.
JavaScript Testing Patterns
PramodDuttaModern JavaScript testing strategies with Jest, Mocha, and testing best practices covering unit testing, integration testing, mocking, async patterns, and DOM testing.
nodejs
blencorpCore Node.js backend patterns for TypeScript applications including async/await error handling, middleware concepts, configuration management, testing strategies, and layered architecture principles. Use when building Node.js backend services, APIs, or microservices.
jest-testing-expert
cin12211Expert in Jest testing framework, advanced mocking strategies, snapshot testing, async patterns, TypeScript integration, and performance optimization
testing-expert
cin12211Testing expert with comprehensive knowledge of test structure, mocking strategies, async testing, coverage analysis, and cross-framework debugging. Use PROACTIVELY for test reliability, flaky test debugging, framework migration, and testing architecture decisions. Covers Jest, Vitest, Playwright, and Testing Library.
typescript
pproencaThis skill should be used when the user asks to "optimize TypeScript performance", "speed up tsc compilation", "configure tsconfig.json", "fix type errors", "improve async patterns", or encounters TS errors (TS2322, TS2339, "is not assignable to"). Also triggers on .ts, .tsx, .d.ts file work involving type definitions, module organization, or memory management. Does NOT cover TypeScript basics, framework-specific patterns, or testing.
rust-testing
pproencaRust testing patterns for CLI applications, libraries, and frameworks. This skill should be used when writing, reviewing, or refactoring Rust tests including unit tests, integration tests, mocking, async testing, and CI integration. Triggers on tasks involving Rust testing, cargo test, mockall, proptest, tokio test, or test organization.
vitest
pproencaVitest testing framework patterns for test setup, async testing, mocking with vi.*, snapshots, and test performance (formerly test-vitest). This skill should be used when writing or debugging Vitest tests. This skill does NOT cover TDD methodology (use test-tdd skill), API mocking with MSW (use test-msw skill), or Jest-specific APIs.
reactive-dashboard-performance
curiositechExpert in building blazing-fast reactive dashboards with comprehensive testing. Masters React performance patterns, testing strategies for async components, and real-world patterns from Linear, Vercel, and Notion.
pytest
manutejAdvanced Python unit testing framework for customer support tech enablement, covering FastAPI, SQLAlchemy, PostgreSQL, async operations, mocking, fixtures, parametrization, coverage, and comprehensive testing strategies for backend support systems
jest-react-testing
manutejComprehensive React component testing with Jest and React Testing Library covering configuration, mocking strategies, async testing patterns, hooks testing, and integration testing best practices
SQLAlchemy ORM Expert
manutejComprehensive SQLAlchemy skill for customer support tech enablement, covering ORM patterns, session management, query optimization, async operations, and PostgreSQL integration
event_driven
vuralserhat86Structure systems around asynchronous, event-based communication to decouple producers and consumers for improved scalability and resilience. Use when building loosely coupled systems with asynchronous message-based communication.
Lua Testing Best Practices
skanehiraComprehensive testing patterns for this Neovim plugin. Covers table-driven tests, async patterns, mocking, fixtures, and buffer testing. Apply when writing or reviewing tests.
performance-hunter
omer-metinPerformance optimization specialist for profiling, caching, and latency optimization. Use when the terms "performance, latency, slow query, profiling, caching, optimization, N+1, connection pool, p99, async, database, load-testing, ml-memory" are mentioned.
firmware-review
ectoReviews Rust firmware code for the BVR (Base Vectoring Rover) with focus on safety-critical systems, CAN bus protocol compliance, motor control logic, state machine correctness, and embedded testing patterns. Use when reviewing BVR firmware changes, debugging actuator control, testing motor communication, validating safety mechanisms, checking async patterns, or evaluating control system modifications. Covers watchdog implementation, e-stop handling, rate limiting, VESC motor controller integration, and Tokio async runtime patterns.