Developer Tools & Repos Agent Skills for Grok Build

Error and exception handling for an APIMatic-generated .NET SDK in C# — load before writing any try/catch around an SDK call, an…

Enforces a typed-error spine — a hand-rolled sealed Result<T,F> plus one per-boundary sealed Failure carrying a stable code and typed…

Ensure user-facing errors and empty states are clear, actionable, and HIG-aligned.

Enforce code quality through ESLint compliance.

Explains the technical architecture for bridging React and TypeScript with Unreal Engine 5's UMG UI system.

Building great Expo native modules for iOS and Android.

Message queue patterns with BullMQ, Kafka, RabbitMQ - saga, outbox, dead letter queue, exactly-once semantics.

Complex event flow patterns for Valkyrie MoM scenarios.

Development conventions and patterns for everything-claude-code.

Prevent silent decimal mismatch bugs across EVM chains.

Exact Online integration via Apideck's Accounting unified API — same methods work across every connector in Accounting, switch by changing…

create a pull request with standardized description template

First-encounter orientation on a repository nobody here has worked in yet.

Scaffold a production-ready Expo React Native app with working screens, navigation, and optional Clerk auth.

Work with OpenEXR files — inspect channels, extract beauty/RGB passes, decode cryptomatte segmentation (material, object, asset), convert…

Use when implementing widgets, Live Activities, Control Center controls, or app extensions - comprehensive API reference for WidgetKit…

Use when implementing widgets, Live Activities, or Control Center controls - enforces correct patterns for timeline management, data…

Connect external agents and MCP hosts (Claude, Claude Desktop, Claude Code, ChatGPT custom MCP apps, Codex, Cursor, Claude Cowork, VS Code…

Connect to external tools via MCP (GitHub, databases, APIs)

Use when adding new error messages to React, or seeing "unknown error code" warnings.

Generates DDD Factory for PHP 8.4. Creates factories for complex domain object instantiation with validation and encapsulated creation…