openapi-spec-writer

Generate OpenAPI 3.0/3.1 specifications for REST APIs with reusable components.

Updated Jan 27, 2026
One-click install
npx skills add https://github.com/zagarlucas/zagarlucas.github.io --skill openapi-spec-writer-zagarlucas
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: openapi-spec-writer
Source: https://github.com/zagarlucas/zagarlucas.github.io/tree/main/.continue/skills/openapi-spec-writer
Command: npx skills add https://github.com/zagarlucas/zagarlucas.github.io --skill openapi-spec-writer-zagarlucas

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Writing OpenAPI specs and API documentation is error-prone and time-consuming; this skill provides a structured approach to create accurate, maintainable API contracts.

Core Features & Use Cases

  • OpenAPI 3.0/3.1 syntax and operations
  • Schema design and reusable components
  • Documentation quality with Markdown descriptions and examples
  • Tooling integration for Swagger UI, Redoc, and linting

Quick Start

Create a minimal OpenAPI spec for a REST API with two endpoints and basic responses.

Frequently Asked Questions about openapi-spec-writer

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

FAQPage Schema
How do I generate an OpenAPI 3.1 specification for a REST API?

To generate an OpenAPI 3.1 specification, define your REST API endpoints, schema designs, and basic responses. This skill structures these elements into an accurate, maintainable API contract with reusable components.

What's the best way to design reusable components in OpenAPI documentation?

Designing reusable components in OpenAPI involves defining schemas and operations with meaningful Markdown descriptions and examples. This approach ensures your API documentation remains accurate and maintainable across design-to-deploy workflows.

Can I use Swagger UI and Redoc for OpenAPI spec tooling integration?

Yes, you can use Swagger UI and Redoc for tooling integration. Generating OpenAPI 3.0/3.1 specifications with proper schema design and examples ensures compatibility with these documentation rendering tools and linting rules.

How do I add examples and descriptions to an OpenAPI schema?

To add examples and descriptions to an OpenAPI schema, apply Markdown formatting and meaningful examples directly within your schema design. This enforces documentation quality and creates a structured, accurate API contract.

Does this approach support both OpenAPI 3.0 and 3.1 syntax?

Yes, this approach supports both OpenAPI 3.0 and 3.1 syntax. You can generate REST API specifications using either version, applying reusable components, descriptions, examples, and linting rules for tooling integration.

Why is writing OpenAPI specs manually considered error-prone?

Writing OpenAPI specs manually is error-prone and time-consuming due to complex syntax and schema design requirements. Using a structured approach enforces reusable components and linting rules, creating accurate, maintainable API contracts efficiently.