API Development Agent Skills

Node.js Backend Patterns

Builds production-ready Node.js backend services and APIs using scalable architectural patterns and industry best practices.

Backend Architecture Patterns

Implements industry-standard architectural patterns including Clean Architecture, Hexagonal Architecture, and Domain-Driven Design for scalable backend systems.

Resilient Error Handling Patterns

Implements robust error handling strategies across multiple programming languages to improve application reliability and developer experience.

Microservices Architecture Patterns

Implements robust distributed system patterns including service decomposition, event-driven messaging, and fault-tolerant communication.

FastAPI Project Templates

Generates production-ready FastAPI project structures featuring asynchronous patterns, dependency injection, and scalable architecture.

Error Handling Patterns

Implements robust error handling strategies and resilient architectural patterns across multiple languages to enhance application reliability.

Authentication & Authorization Patterns

Implements secure access control systems using industry-standard patterns like JWT, OAuth2, and Role-Based Access Control (RBAC).

Async Python Patterns

Implements high-performance asynchronous Python patterns using asyncio and concurrent programming techniques.

Error Handling Patterns

Implements robust error handling strategies and resilience patterns across multiple programming languages to build fault-tolerant applications.

Async Python Patterns

Implements high-performance Python applications using asyncio, concurrent programming patterns, and non-blocking I/O strategies.

Langdock API Integration

Integrates Langdock's AI assistants, knowledge retrieval, and RAG pipelines into custom applications using Python or Node.js.

MCP State Management

Manages data persistence and session tracking for OpenAI Apps SDK widgets across conversation turns.

MCP Tool Design for OpenAI Apps SDK

Guides the creation of robust, secure, and well-documented MCP tools for the OpenAI Apps SDK using standardized schemas and behavioral hints.

Langdock Action Patterns

Streamlines the creation of production-ready Langdock integration actions using standardized patterns for API authentication, request handling, and metadata formatting.

Langdock API Operations

Manage Langdock assistants, knowledge folders, and usage analytics through specialized API integrations and CLI tools.

MCP Server Architecture

Provides architectural guidance and implementation patterns for building Model Context Protocol (MCP) servers with the OpenAI Apps SDK.

Langdock Parallel Actions

Optimizes Langdock action performance by implementing parallel API execution patterns and fault-tolerant request handling.

Midnight Contract Interaction

Enables Node.js applications to query state and execute transactions on deployed Midnight smart contracts with integrated zero-knowledge proof generation.

Node.js Backend Architect

Implements production-ready Node.js backend services using Express or Fastify with industry-standard architectural patterns and TypeScript.

Rust Development Specialist

Builds high-performance, memory-safe applications using modern Rust 1.92+ patterns including Axum, Tokio, and SQLx.

Data Format Specialist

Optimizes data structures and serialization patterns to maximize LLM token efficiency and application performance.

Modern JavaScript Specialist

Streamlines modern JavaScript development with expert guidance on ES2024+ features, cross-runtime compatibility, and high-performance backend frameworks.

TypeScript & Next.js Fullstack Specialist

Accelerates full-stack development using TypeScript 5.9, React 19, and Next.js 16 with rigorous type-safe API patterns.

MCP Server Builder

Guides the end-to-end development of high-quality Model Context Protocol (MCP) servers to connect LLMs with external services.

OpenSpec Change Manager

Initiates structured development workflows using the OpenSpec artifact-driven methodology to streamline feature creation and bug fixes.

FastAPI Architecture Patterns

Implements scalable layered architecture for FastAPI projects using SQLAlchemy 2.0 and dependency injection.

Architecture Patterns

Designs and reviews high-level system architectures for Python backend projects using FastAPI and SQLAlchemy 2.0.

Python Type Safety Patterns

Implements robust Python type annotations and structural subtyping to eliminate type errors without using suppressions like type: ignore.

MCP Integration

Integrates Model Context Protocol (MCP) servers into Claude Code plugins to extend AI capabilities with external tools and data sources.

OpenSpec Change Manager

Initiates a structured, artifact-driven workflow for creating new features, fixes, or modifications using OpenSpec.