Comprehensive backend development guide for Node.js/Express/TypeScript microservices. Use when creating routes, controllers, services, repositories, middleware, or working with Express APIs,...

Comprehensive backend development guide for Node.js/Express/TypeScript microservices. Use when creating routes, controllers, services, repositories, middleware, or working with Express APIs,...

Comprehensive backend development guide for Node.js/Express/TypeScript microservices. Use when creating routes, controllers, services, repositories, middleware, or working with Express APIs,...

Go language expertise for writing idiomatic, production-quality Go code. Use for Go development, concurrency patterns, error handling, testing, and module management. Triggers: go, golang,...

Implement HTTP data fetching in Angular v20+ using resource(), httpResource(), and HttpClient. Use for API calls, data loading with signals, request/response handling, and interceptors. Triggers...

Best practices and workflows for the Spotify Web API. Use when building apps that interact with Spotify to: (1) Handle rate limits and 429 errors, (2) Implement efficient polling strategies, (3)...

Guide for Convex performance optimization including denormalization, index design, avoiding N+1 queries, OCC (Optimistic Concurrency Control), and handling hot spots. Use when optimizing query...

Validation patterns using fp-ts with error accumulation, form validation, and API input validation

End-to-end form handling with react-hook-form, Zod schemas, validation patterns, error messaging, field arrays, and multi-step wizards. Use for complex forms, validation architecture, autosave,...

Does something useful

Expert at building robust form experiences. Covers React Hook Form, Zod validation, server actions, progressive enhancement, error handling, and accessible form patterns. Use when "form,...

Angular HttpClient for API communication, interceptors, and error handling

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Use when creating custom exceptions. Use when error handling feels chaotic. Use when catch blocks are too broad or too specific.

Shared Go best practices for LlamaFarm CLI. Covers idiomatic patterns, error handling, and testing.

Use when handling errors. Use when tempted to catch and swallow exceptions. Use when returning default values to hide failures.

Bash scripting guidelines covering security, portability, error handling, and automation best practices for DevOps.

Lua development guidelines covering tables, metatables, error handling, game development, and performance optimization.

Expert in JSON-RPC 2.0 protocol implementation, message dispatching, error handling, batch processing, and secure RPC endpoints

Build production-ready RESTful APIs with Express.js including routing, middleware, validation, and error handling for scalable backend services