yappologistic

Show available C# Tutor skills, modes, examples, and usage guidance. Use when the user asks what C# Tutor can do, which C# skill to use, or how to invoke the C# Tutor skill family from the Codex picker.

Teach and review C# for developers learning the language. Use when users ask C# questions, request explanations of C# or .NET concepts, share C# code or codebases for feedback, need examples, cheat sheets, exercises, debugging labs, mini projects, interview prep, tips, bug-prevention guidance, vulnerability checks, code quality improvements, or want help applying object-oriented design, clean code, SOLID, design patterns, API design, async, concurrency, LINQ, generics, collections, architecture, build tooling, logging, NuGet packaging, NativeAOT, trimming, analyzer configuration, version compatibility, tooling, performance, maintainability, scalability, newer C#/.NET features, or official Microsoft C# and .NET documentation.

Teach and review C# Roslyn analyzers, .editorconfig, nullable warnings, warning levels, TreatWarningsAsErrors, WarningsAsErrors, NoWarn, EnforceCodeStyleInBuild, dotnet format, analyzer packages, StyleCop, SonarAnalyzer, Roslynator, code quality gates, and CI analyzer enforcement.

Teach and review C# and .NET NativeAOT, trimming, single-file publishing, linker warnings, reflection risks, serialization compatibility, source generators, publish settings, runtime identifiers, deployment constraints, and AOT/trimming readiness for apps and libraries.

Teach and review C# public API design. Use for method signatures, naming, nullability, exceptions, result types, cancellation, async APIs, records, DTOs, versioning, binary compatibility, XML docs, NuGet packaging, library boundaries, and maintainable API surfaces.

Teach and review C# application architecture. Use for clean architecture, layered architecture, vertical slice architecture, domain services, application services, DTO boundaries, dependency direction, modularity, scalability, maintainability, testability, and avoiding overengineering.

Teach and review ASP.NET Core C# web applications. Use for controllers, minimal APIs, Razor Pages, middleware, routing, model binding, validation, authentication, authorization, configuration, logging, dependency injection, error handling, API design, and web security or performance questions.

Teach and review C# async programming. Use for async/await, Task, generic Task results, ValueTask, cancellation tokens, async tests, fire-and-forget tasks, sync-over-async, deadlocks, I/O-bound work, background work, and async performance or correctness issues.

Make dense information and complex work easier to understand, navigate, remember, and act on through short layers, clear structure, plain-language explanations, concrete examples, and visible progress. Use for long or difficult text, articles, books, documentation, research, learning, decisions, planning, coding, project work, task initiation, attention recovery, or whenever a user mentions ADHD, overwhelm, cognitive load, trouble reading, trouble focusing, losing their place, or wanting information simplified, chunked, summarized, paced, or made actionable.

Launch and test the T3 Code web app in isolated development environments, including first-try browser authentication with one-time pairing URLs, pairing-token recovery, worktree-safe state directories, dev server lifecycle, and direct SQLite inspection or fixture seeding. Use when an agent needs to run T3 locally, test UI behavior in a browser, recover from an expired or consumed pairing token, isolate dev state, or prepare test data in state.sqlite.

Create, edit, validate, and export Excalidraw diagrams through the Excalidrawer MCP tools or CLI. Use when Codex needs to produce .excalidraw scene files, modify existing Excalidraw JSON, turn a natural-language architecture/process sketch into diagram elements, or export a scene to SVG/PNG for review.