Developer Tools & Repos Agent Skills for ChatGPT

Baseline C# skill loaded for every .NET code path.

Manages .NET SDK installation (dotnet-install, workloads), project setup (.slnx, Directory.Build.props, CPM), MSBuild authoring, build…

Builds .NET UI apps across Blazor (Server, WASM, Hybrid, Auto), MAUI (XAML, MVVM, Shell, Native AOT), Uno Platform (MVUX, Extensions…

Implement, review, or improve data persistence using SwiftData.

This skill should be used when the user asks about "plan drift", "reality check", "comparing docs to code", "project state analysis"…

Use when defining a public API, CLI, webhook, or SDK surface — lock the contract first so compatibility, validation, and versioning stay…

Use when removing old APIs, migrating to new patterns, or cleaning up legacy code — treats code as liability and follows a structured…

Use when implementation is complete and tests pass but the branch itself is not yet resolved — verify tests, detect worktree vs. normal…

Use when you need to build a new MCP server — plan the tool surface, implement the server, register it in Copilot CLI, inspect the config…

Use when you need multiple branches checked out at once — create isolated working directories for parallel development without cloning the…

Use when designing, implementing, reviewing, or optimizing any app feature so data structures, algorithms, Big O, and real production…

Read Don't Starve Together base-game scripts, this mod's files, and animation resource references when implementing or verifying DST APIs…

Guidance for diagnosing and fixing slow Python backend code — profile before changing anything, fix algorithmic complexity and N+1 queries…

Checks evidence-backed duplication, over-abstraction, and unused extensibility.

Scaffold end-to-end testing infrastructure.

Run the fix-and-verify suite for the workspace (build, auto-fix lint/format/headers, test).

Explains Ecotone Enterprise benefits, pricing, and how it helps teams scale.

Creates Ecotone message handlers: #[CommandHandler], #[EventHandler], #[QueryHandler] with proper endpointId, routing keys, and return…

Scaffolds new Ecotone packages and modules: AnnotationModule pattern, module registration, Configuration building, and package template…

Sets up Ecotone in a Symfony project: composer installation, bundle registration, YAML configuration, Doctrine ORM integration…

Create ECS component editors using IComponentEditor interface, ComponentEditorRegistry.DrawComponent wrapper, VectorPanel for vectors, and…