Skill backend agnostica al framework: architettura layered, controller/api layer, application services, repository, validazione, sicurezza, error handling e testing.
Diagnose and fix FastAPI hangs caused by blocking ThreadPoolExecutor shutdown in the news stream route; includes py-spy capture and non-blocking executor pattern.
Production-ready backend API implementation patterns including REST, GraphQL, authentication, error handling, and data validation
Use to plan backend integration tests — real HTTP requests against the app with a real (containerized) database, covering auth flows, authorization negative tests…
Master skill for TypeScript backend development. Decision framework for APIs (tRPC/REST), authentication (Auth.js/Passport), database (Prisma), validation (Zod), logging (Pino),…
Enforce this repository's TypeScript backend module architecture standards. Use whenever creating, modifying, refactoring, or reviewing backend code under `server/`, including…
Rules for the SkillHub backend Maven multi-module clean architecture. Ensures agents place new code in the correct module and respect dependency direction.
Modern Node.js backend stack: NestJS/Hono, Drizzle ORM, Vitest, TypeScript. Use when: building Node.js APIs, TypeScript backends, or serverless functions.
Backend architecture patterns, API design, database optimization, and server-side best practices for Node.js, Express, and Next.js API routes. — from affaan-m
Apply backend patterns for server architecture, database interactions, and API structure. Use when designing backend systems. Not for frontend logic or simple scripts.
Use to diagnose and fix measured backend performance problems — profiling first, then N+1 and query work (with the database pack), caching with explicit invalidation, connection…
PHP Developer Agent. Laravel 기반 백엔드 개발을 담당합니다. Eloquent ORM, Artisan, Queue, Sanctum 전문.
High-performance structured JSON logging for Node.js. Use when building production APIs that need fast, structured logs for observability platforms (Datadog, ELK, CloudWatch).
Build or adapt Oak Curriculum API learning experiences, especially child-facing Apps SDK flows. Use when the user wants Oak endpoints or curriculum data turned into guided…
Backend/API architecture - controller-service-repository layering, request/response handling, API and request optimization (batching, avoiding redundant calls), server-side…
Modern Python backend stack: FastAPI, SQLAlchemy 2.0, Pydantic v2, uv, ruff. Use when: building Python APIs, async services, or working with Python backend code.
Profile and optimize Python backend code using cProfile, memory profilers, and performance best practices.
Profile and optimize Python backend code using cProfile, memory profilers, and performance best practices.
Implement comprehensive testing strategies with pytest, fixtures, mocking, and test-driven development for FastAPI applications.
Build Retrieval-Augmented Generation (RAG) systems for LLM applications with vector databases and semantic search in FastAPI backends.
Build Retrieval-Augmented Generation (RAG) systems for LLM applications with vector databases and semantic search in FastAPI backends.
Implement real-time features using WebSockets, Supabase Realtime, Server-Sent Events, and live data. Use when user wants "real-time", "live updates", "WebSocket", "notifications",…
Use when designing, changing, or debugging backend server code (REST, Node.js/TypeScript, Go), especially endpoints, response envelopes, pagination, migrations, queries, auth,…
Architect scalable backend services using layered architecture, dependency injection, middleware patterns, service classes, and separation of concerns.
Implementa e evolui a API EmpregaNet em .NET com Clean Architecture, handlers IRequest/IRequestHandler, EF Core, validação e padrões já usados no repositório.
Experto en FastAPI y gestión segura de credenciales multi-tenant para Platform AI Solutions. — from engineering/backend
Experto en FastAPI y gestión segura de credenciales multi-tenant para Platform AI Solutions. — from engineering/backend
.NET 8 Web API (CQRS/MediatR), MongoDB, X-Tenant-Id ile multi-tenant ve JWT auth konusunda uzman agent davranışı.
Use to decide between Express and NestJS (or flag another fit) for a backend API, with justification.
Backend API Master Standard สำหรับพัฒนา API ด้วย Next.js App Router + Prisma ORM + Zod ตาม Clean Architecture อย่างเคร่งครัด ใช้เมื่อสร้าง API route ใหม่ เพิ่ม feature หรือแก้ไข…
Hono/Bun patterns and backend best practices for this project. Use when implementing API endpoints, WebSocket handlers, services, or server-side logic in packages/server.
Organizes a flat backend directory structure into a clean, modular architecture with proper Python packages and updated import paths.
Backend TDD Agent. Node.js/NestJS 기반 TDD 테스트 작성 및 구현을 담당합니다. 테스트 먼저 작성 후 구현하는 Red-Green-Refactor 사이클을 따릅니다.
Run isolated test environments for backend changes, manage test data, and verify API endpoints. Use when testing Python backend changes without interfering with production…
Write comprehensive backend tests including unit tests, integration tests, and API tests. Use when testing REST APIs, database operations, authentication flows, or business logic.
Verify backend changes at contract and integration boundaries with deterministic success, denial, concurrency, retry, migration, and dependency-failure evidence.
Type-safe API layer for TypeScript full-stack applications. Use when building APIs that need end-to-end type safety between client and server WITHOUT code generation.
Generate OpenAPI/REST endpoints from tRPC routers. Use when you have a tRPC API but need to expose REST endpoints for third-party integrations, mobile apps, or public API…
Use to plan backend unit tests — services and pure business logic tested in isolation with focused test doubles, fast and deterministic, covering edge and failure paths.
TypeScript-first schema validation library. Use for ALL input validation in TypeScript projects — API inputs, form data, environment variables, config files.
Expert in background job processing with Bull/BullMQ (Redis), Celery, and cloud queues. Implements retries, scheduling, priority queues, and worker management.
Use when adding background jobs (Bull queues) or a Redis cache to a backend service — multi-queue architecture, enqueue/process, dynamic delayed jobs, job idempotency via a DB…
Build Backstage backend plugins with createBackendPlugin and core services: DI, httpRouter, secure-by-default auth, Knex DB, routes, testing. Use for APIs and background jobs.
Build Backstage frontend plugins with the new Frontend System: createFrontendPlugin, blueprints, routes, Utility APIs, testing. Use for pages, nav, entity content, or cards.
Backtest results interpreter and strategy evaluator. Analyzes historical backtest performance, identifies strengths/weaknesses, and provides actionable recommendations for…
Critical fix for backtest capital accounting when equity curves are inflated or drawdown metrics are meaningless
Converting backtest visualizations from bar indices/timesteps to actual datetime axes for clearer time context
How to design and read backtests honestly — lookahead/leakage traps, point-in-time discipline, multiple comparisons, CLV vs ROI, sample size.
Build a backtest that will not lie to you — the engineering, not the statistics. Use when implementing, reviewing, or debugging a backtest/simulation of a trading or…
Expert guidance for systematic backtesting of trading strategies. Use when developing, testing, stress-testing, or validating quantitative trading strategies.
Expert guidance for systematic backtesting of trading strategies on Indian markets (NSE/BSE). Use when developing strategies, testing robustness, avoiding overfitting, or…
Save backtest results to SQLite database for comparison. Trigger when: (1) tracking backtest history, (2) comparing model performance, (3) querying best backtests.
Guide agents through backtesting strategy ideas with automatic data fetching and performance analysis
Comprehensive guidance for interpreting backtest results and detecting overfitting (project) — from engineering/testing
Comprehensive guidance for interpreting backtest results and detecting overfitting (project) — from majiayu000/claude-skill-registry
Phylax Credible Layer assertions backtesting. Runs assertion backtests against historical transactions.
Build robust, production-grade backtesting systems that avoid common pitfalls and produce reliable strategy performance estimates.
Build robust backtesting systems for trading strategies with proper handling of look-ahead bias, survivorship bias, and transaction costs.
Build robust backtesting systems for trading strategies with proper handling of look-ahead bias, survivorship bias, and transaction costs.
backtesting.py configuration for SQL oracle validation and range bar pattern backtesting. Use when running backtesting.py against ClickHouse SQL results, configuring Backtest()…