Developer Tools & Repos Agent Skills for Microsoft Copilot

Fast, modern JavaScript/TypeScript development with the Bun runtime, inspired by [oven-sh/bun](https://github.com/oven-sh/bun).

Modern C++ programming patterns and idioms

Format C++ code in Sanmill project to ensure consistent code style; use when formatting C++ code or checking code style compliance.

Streamlines C# desktop and cross-platform GUI development using WPF, .NET MAUI, Avalonia UI, and WinUI 3 with modern MVVM patterns.

When to activate: C++ performance, profiling, cache, SIMD, branch prediction, LTO, PGO, perf, vtune, benchmarking, optimization

Write efficient C code with proper memory management, pointer

When to activate: templates, template metaprogramming, SFINAE, concepts, variadic templates, fold expressions, type_traits, enable_if…

Implement caching strategies for HTTP, service workers, and memoization

Use when users need to implement, integrate, debug, build, deploy, or validate a Web frontend after the product direction is already…

WeChat Mini Program development skill for building, debugging, previewing, testing, publishing, and optimizing mini program projects.

Reference — AVCaptureSession, AVCapturePhotoSettings, AVCapturePhotoOutput, RotationCoordinator, photoQualityPrioritization, deferred…

Use this agent to scan Swift code for camera, video, and audio capture issues including deprecated APIs, missing interruption handlers…

camera freezes, preview rotated wrong, capture slow, session interrupted, black preview, front camera mirrored, camera not starting…

AVCaptureSession, camera preview, photo capture, video recording, RotationCoordinator, session interruptions, deferred processing, capture…

Specialization of android-emulator-harness for CAMERA / segmentation testing: get a real PERSON in front of the emulator camera so…

Session and Stream capability setup, video frames, photo capture, resolution and frame rate configuration

Use when implementing cameras — smooth follow, screen shake, camera zones, and transitions for 2D and 3D

This skill should be used when creating a new Daggerheart campaign, establishing world tone and themes, selecting or building a campaign…

Implement Canva Connect API webhook handling with JWK signature verification.

Use when building or reviewing Canvas 2D, Three.js/WebGL, React Three Fiber, GLSL shaders, ShaderToy-to-WebGL adaptation, 2D/3D…

Generates paste-ready Power Apps Canvas App YAML.