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Found 249 Skills
Interactive code execution path tracer that explains how code flows from entry point to output. Uses step-by-step navigation with AskUserQuestion to explore conditional branches and function calls. Use when: - User asks "How does X work in this codebase?" - User wants to understand HTTP request/response flow - User asks about middleware execution order - User wants to trace a function call chain - User asks "What happens when..." questions - User wants to learn how code paths connect Keywords: trace, flow, execution, path, call chain, middleware, request handling, what happens, how does, step through, follow the code
Use when implementing authentication with Better Auth in a TypeScript/Next.js app (session strategy, providers, cookies, CSRF, redirects, middleware, and security best practices).
Use when implementing SDK code hooks for custom logic (not spec configuration or runtime overrides). Covers SDK lifecycle hooks: BeforeRequest, AfterSuccess, AfterError for custom headers, telemetry, HMAC signing, and request/response transformation. Triggers on "SDK hooks", "add hooks", "BeforeRequestHook", "custom logic in SDK", "telemetry hook", "SDK middleware", "intercept requests", "HMAC signing hook", "custom code in hooks directory".
WCAG 2.2 AA accessibility audit and implementation for TYPO3 v12–v14 (v14 preferred). Covers Fluid template patterns, PHP middleware, JavaScript enhancements, Content Element accessibility, form accessibility, and a full go-live checklist. Use when working with accessibility, a11y, wcag, aria, screen reader, keyboard navigation, focus management, color contrast, alt text, semantic html, skip link, or accessible forms in TYPO3.
Build, review, refactor, or architect ASP.NET Core web applications using current official guidance for .NET web development. Use when working on Blazor Web Apps, Razor Pages, MVC, Minimal APIs, controller-based Web APIs, SignalR, gRPC, middleware, dependency injection, configuration, authentication, authorization, testing, performance, deployment, or ASP.NET Core upgrades.
Using System.CommandLine 2.0. Commands, options, SetAction, custom parsing, middleware, testing.
Go error handling patterns, wrapping, sentinel errors, custom error types, and the errors package. Grounded in Effective Go, Go Code Review Comments, and production-proven idioms. Use when implementing error handling, designing error types, debugging error chains, or reviewing error handling patterns. Trigger examples: "handle errors", "error wrapping", "custom error type", "sentinel errors", "errors.Is", "errors.As". Do NOT use for panic/recover patterns in middleware (use go-api-design) or test assertion errors (use go-test-quality).
NestJS framework best practices and production patterns. Use whenever working with NestJS — creating modules, controllers, services, DTOs, guards, interceptors, pipes, middleware, or building REST/GraphQL/microservice APIs. Also use when setting up authentication, authorization, validation, queues, health checks, WebSockets, caching, or any @nestjs/* package. Even for simple NestJS tasks, this skill ensures correct import paths, proper decorator usage, and production-ready patterns. Covers NestJS v11 with Express v5, native JWT auth, Zod validation, Keyv caching, and Suites testing.
Use when building or maintaining Laravel applications — Eloquent ORM, Blade, Livewire, queues, Pest testing, middleware, service providers, migrations. Trigger conditions: Laravel project setup, Eloquent model design, Blade or Livewire component creation, queue/job implementation, Pest test writing, middleware configuration, migration authoring, route definition, Form Request validation, policy authorization, Sanctum/Passport authentication, Horizon queue monitoring.
Build AI agents with x402 payments on SKALE. Covers facilitator setup, payment middleware, and agent client. Use for monetized AI services, agent-to-agent payments.
Next.js 15 App Router patterns: Server Components, Server Actions, data fetching, middleware. Trigger: When building Next.js apps, working with app router, server/client components, or API routes.
MERN stack patterns including React with Vite, Express middleware, MongoDB schemas, API Gateway architecture, session management, error handling, and testing strategies. Activate for MERN development, microservices architecture, and full-stack JavaScript applications.