api-designer

Create OpenAPI 3.1 YAML specifications with endpoints, schemas, and security.

Updated Apr 25, 2026
One-click install
npx skills add https://github.com/Serg28/demosite --skill api-designer-serg28
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: api-designer
Source: https://github.com/Serg28/demosite/tree/main/.agents/skills/api-designer
Command: npx skills add https://github.com/Serg28/demosite --skill api-designer-serg28

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) and assets (resource) components.

What problem does it solve?

Enables architects and developers to craft detailed, standards-compliant API specifications, streamlining API design and documentation processes.

Core Features & Use Cases

  • API Specification: Create complete OpenAPI 3.1 documents that define endpoints, data schemas, and security schemes.
  • Best Practice Enforcement: Ensure APIs follow REST principles, versioning strategies, pagination, error handling, and security standards.
  • Use Case: A development team needs to standardize their API design; this Skill helps generate a validated OpenAPI spec tailored to their needs and guides best practices.

Quick Start

Use the api-designer skill to generate an OpenAPI 3.1 YAML document for your new API project.

Frequently Asked Questions about api-designer

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I create an OpenAPI 3.1 specification for my REST API?

You can create an OpenAPI 3.1 specification by generating a YAML document that defines your endpoints, data schemas, security schemes, and pagination patterns. This process ensures your API contract is fully documented and validated for backend services.

What's the best way to design REST APIs with proper versioning and error handling?

Designing REST APIs with proper versioning and error handling involves establishing a comprehensive specification that enforces best practices. This approach guides you in structuring endpoints and error responses to align with REST principles and security standards.

Can I define both REST and GraphQL API contracts in the same specification?

You can define robust REST and GraphQL API contracts by generating detailed specifications. The skill assists in creating comprehensive specs that cover endpoint definitions, schemas, and security for both API architectural styles.

Do I need YAML validation tools to generate OpenAPI specifications?

Yes, you need YAML-based schema development and validation tools to generate OpenAPI specifications. These tools are required to properly structure, validate, and maintain the detailed API contracts for client integrations.

How does an API specification help standardize backend service development?

An API specification standardizes backend service development by providing a validated contract that aligns with OpenAPI standards. It streamlines the API design and documentation processes, ensuring development teams follow consistent endpoint definitions and security protocols.

When should I not use a detailed API specification for my project?

You should not use a detailed API specification for simple projects where establishing a formal OpenAPI contract is unnecessary. If your backend services do not require strict client integrations or standardized error handling, this approach may be excessive.