API Design Agent Skills

Builds, configures, and debugs enterprise Java applications with Spring Boot 3.x, microservices, or reactive programming, including WebFlux endpoints, JPA optimization, and Spring Security with OAuth2/JWT.

Builds and debugs Shopify themes, develops custom Shopify apps, and implements Storefront API integrations for headless storefronts.

Implements advanced TypeScript type systems, creates custom type guards, utility types, and branded types, and configures tRPC for end-to-end type safety.

Builds C# applications with .NET 8+, ASP.NET Core APIs, or Blazor web apps, including REST APIs, Entity Framework Core data access, CQRS with MediatR, and Blazor components.

Build Next.js 14+ applications with App Router, server components, server actions, and optimized deployment.

Design GraphQL schemas, implement Apollo Federation, and build real-time subscriptions with DataLoader patterns and query optimization.

Provides idiomatic Kotlin implementation patterns including coroutine concurrency, Flow stream handling, multiplatform architecture, Compose UI construction, Ktor server setup, and type-safe DSL design.

Build .NET 8 applications with minimal APIs, clean architecture, CQRS, Entity Framework Core, and JWT authentication.

Build and configure Laravel 10+ applications with Eloquent models, Sanctum authentication, Horizon queues, RESTful APIs, and Livewire components.

Build real-time communication systems with WebSockets or Socket.IO, including bidirectional messaging, horizontal scaling with Redis, presence tracking, and room management.

Generates Spring Boot 3.x configurations, REST controllers, Spring Security 6 authentication flows, Spring Data JPA repositories, and reactive WebFlux endpoints for building microservices and reactive Java applications.

Build LLM-powered applications with agents, chains, and RAG using a framework that supports multiple providers and 500+ integrations.

Guides configuration of n8n nodes with operation-aware field requirements, property dependencies, and progressive discovery patterns.

Sets up authentication in Convex apps with user management, identity mapping, and access control for providers like Convex Auth, Clerk, WorkOS AuthKit, and Auth0.

Builds reusable Convex components with isolated tables and app-facing APIs for new components, reusable backend modules, integrations, or component boundary work.

Build reliable, fault-tolerant Python applications with DBOS durable workflows, steps, queues, and communication patterns.

Design and implement production-grade gRPC services in Go with Protobuf contracts, mTLS, streaming, and OpenTelemetry observability.

Implement and debug network requests, API calls, and data fetching in Expo apps using fetch, React Query, SWR, Expo Router loaders, caching, and offline support.

构建和部署 Dify 工作流与插件，涵盖节点类型、设计模式、性能优化、安全部署及外部系统集成。

Guides developers through building Dify plugins, covering the four plugin types, Beehive architecture, runtime modes, and the full development workflow from setup to packaging.

Provides RESTful API design patterns and best practices for creating endpoints, designing APIs, and implementing routes.

Build trading, liquidity provision, and pool management applications on Solana and Eclipse using the Orca Whirlpools SDK, covering swaps, positions, and fee harvesting.

Build type-safe APIs with tRPC, covering procedures, routers, middleware, React integration, subscriptions, and error handling.

Provides Rust code patterns for building blocking HTTP clients with ureq, including request construction, response handling, SSE streaming, and timeouts.

Build, deploy, and interact with Juicebox V5 projects, including revnets, hooks, and omnichain deployments, with API references, implementation details, UI generation, and GraphQL queries.

Generates type-safe TypeScript clients from OpenAPI specs using Orval, covering configuration, React Query/SWR hooks, custom mutators, and MSW mocks.

Implements real-time pub/sub messaging with Ably's edge infrastructure, covering presence, message history, and token authentication.

Guides the creation of high-quality MCP servers that let LLMs interact with external services through well-designed tools, covering planning, implementation, testing, and evaluation.

Builds multi-tenant Laravel SaaS applications with stancl/tenancy v3, covering tenant identification, data isolation, bootstrappers, queues, and production patterns.

Guides Elixir developers in structuring Ash applications with resources, actions, code interfaces, and error handling.

Chains /mvp and /backend-spec to analyze an app from video, screenshots, or description, then generate implementation stories from the analysis.

Generates OpenAPI 3.1 documentation from an API codebase, auto-detecting frameworks, extracting routes and schemas, and setting up interactive docs.

Creates, updates, and deletes Salesforce records from Lightning Web Components using Lightning Data Service, covering record input shapes, error handling, and cache refresh strategies.

Builds a custom LWC lookup component with typeahead search via Apex SOSL/SOQL, debounce, keyboard navigation, and pill UI for cases where standard pickers fall short.

Creates or updates Salesforce metadata components at runtime from Apex using the Metadata namespace, including custom fields, objects, picklist values, and labels, with asynchronous deployment and callback handling.

Designs and reviews Apex actions exposed to Flow via @InvocableMethod, focusing on wrapper DTOs, bulk-safe list contracts, and intentional error behavior.