API Design Agent Skills

Build serverless background jobs, event-driven workflows, and durable execution with Inngest, without managing queues or workers.

Build clean async pipelines with fp-ts TaskEither, replacing nested try/catch with composable error handling and real API examples.

Apply functional programming patterns with fp-ts in React, covering state management, form validation, and data fetching for React 18/19 and Next.js 14/15.

Provides expert guidance on modern Java 21+ development, including virtual threads, Spring Boot 3.x, GraalVM, and cloud-native patterns for building scalable enterprise applications.

Designs, reviews, and scales backend systems with detailed blueprints, trade-off analysis, and technology recommendations.

Write idiomatic Ruby code with metaprogramming, Rails patterns, and performance optimization. Specializes in Ruby on Rails, gem development, and testing frameworks.

Master enterprise-grade Scala development with functional programming, distributed systems, and big data processing. Expert in Apache Pekko, Akka, Spark, ZIO/Cats Effect, and reactive architectures.

Build full-stack web applications with SvelteKit — file-based routing, SSR, SSG, API routes, and form actions in one framework.

Build LLM-powered applications using the Claude API, Anthropic SDKs, or the Agent SDK with language-specific guidance and best practices.

Provides expert patterns for implementing Clerk authentication in Next.js, including middleware, server components, client hooks, organizations, and webhooks.

Write modern C# code with advanced features like records, pattern matching, and async/await. Optimizes .NET applications, implements enterprise patterns, and ensures comprehensive testing.

Build scalable Django 5.x applications with async views, DRF, Celery, and Channels, following best practices for architecture, testing, and deployment.

Build type-safe, testable Node.js/Deno backends using fp-ts with ReaderTaskEither, functional dependency injection, and service composition patterns.

Master Go 1.21+ with modern patterns, advanced concurrency, performance optimization, and production-ready microservices.

Develop, deploy, and manage Cloudflare Workers and associated services (KV, R2, D1, Queues, etc.) using the Wrangler CLI with up-to-date commands and configuration.

Build, review, refactor, or architect ASP.NET Core web applications using current official guidance for .NET web development. Covers Blazor, Razor Pages, MVC, Minimal APIs, Web APIs, SignalR, gRPC, middleware, DI, configuration, auth, testing, performance, deployment, and upgrades.

Scaffold, build, and refactor ChatGPT Apps SDK projects with a docs-first workflow, combining MCP servers and widget UIs.

Create MCP servers using the C# SDK and .NET project templates, covering scaffolding, tool/prompt/resource implementation, and transport configuration for stdio and HTTP.

Wire UI controls to ViewModel properties with compile-time safety, change notification, and minimal overhead using .NET MAUI data bindings.

Guides creation and modification of ASP.NET Core Web API endpoints with correct HTTP semantics, OpenAPI metadata, and error handling.

Provides guidance on new System.Text.Json APIs introduced in .NET 11, including typed JsonTypeInfo access and PascalCase naming policy.

Call APIs, load data into components, and handle the async lifecycle in Blazor.

Configure dependency injection in .NET MAUI apps — service registration in MauiProgram.cs, lifetime selection, constructor injection, Shell navigation auto-resolution, platform-specific registrations, and testability patterns.

Generate Oracle APEX applications using APEXlang with structured workflows and domain references.

Generates APEXlang artifacts for Oracle APEX applications using deterministic local-context discovery and compact machine-readable contracts.

Access Expo's official library of ~70 integration examples to find canonical patterns for adding third-party services like Stripe, Clerk, Supabase, and maps to your Expo app.

Build applications with Gemini API hosted models, including Gemini and Gemma 4, using multimodal content, function calling, structured outputs, and current SDKs for Python, JavaScript, Go, and Java.

Creates a new AEM Edge Delivery site from scratch, including GitHub repository setup, aem-code-sync installation, initial content creation in DA, and preview URL generation.

Implement custom AEM Workflow Java components on AEM 6.5 LTS, including WorkflowProcess and ParticipantStepChooser with OSGi registration, metadata handling, and error patterns.

Design and create AEM Workflow models on AEM 6.5 LTS, covering step types, transitions, variables, and XML deployment via Package Manager or Maven.

Appends a GitHub issue link and its associated Linear ticket to the current PR's description.

Get best practices for Entity Framework Core, covering data context design, entity design, performance, migrations, querying, change tracking, security, and testing.

Build .NET MVVM ViewModels with CommunityToolkit.Mvvm source generators, base classes, and commands for WPF, WinUI, MAUI, Uno, and Avalonia.

Resolve timezone questions for .NET and C# code with production-safe guidance and copy-paste-ready snippets, including address-to-timezone lookup, cross-platform ID mapping, and DST-safe scheduling.

Provides best practices for developing high-quality Spring Boot applications, covering project structure, dependency injection, configuration, web layer, service layer, data layer, logging, testing, and security.

Wire CommunityToolkit.Mvvm ViewModels into Microsoft.Extensions.DependencyInjection with constructor injection, service lifetimes, IMessenger registration, and testing seams for WPF, WinUI 3, MAUI, Uno, and Avalonia apps.