openapi-spec-writer

Name: openapi-spec-writer
Availability: InStock
Author: Curiositech

Generate OpenAPI 3.0/3.1 YAML or JSON specifications for REST APIs.

181|30|Updated Nov 16, 2025

Search Tags:#documentation #openapi #specification #schema #rest #api-design

Ready to run

npx skills add https://github.com/curiositech/some_claude_skills --skill openapi-spec-writer-curiositech

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: openapi-spec-writer
Source: https://github.com/curiositech/some_claude_skills/tree/main/.claude/skills/openapi-spec-writer
Command: npx skills add https://github.com/curiositech/some_claude_skills --skill openapi-spec-writer-curiositech

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill automates the creation and maintenance of OpenAPI specifications, ensuring your API documentation is accurate, comprehensive, and serves as a reliable contract.

Core Features & Use Cases

Specification Generation: Writes OpenAPI 3.0/3.1 compliant YAML or JSON specifications.
Schema Design: Designs reusable and well-defined JSON schemas for request and response bodies.
Use Case: You need to define the API contract for a new microservice. Use this Skill to generate a complete OpenAPI specification, including paths, operations, schemas, and error responses, before writing any code.

Quick Start

Use the openapi-spec-writer skill to generate an OpenAPI 3.1 specification for a task management API.

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 specification for a REST API?▼

To generate an OpenAPI specification for a REST API, you provide the API design details and the tool outputs compliant OpenAPI 3.0/3.1 YAML or JSON specifications, including paths, operations, and schemas.

What is the best way to design JSON schemas for API request and response bodies?▼

Designing JSON schemas for API request and response bodies involves defining reusable data structures within your OpenAPI specification, ensuring your API documentation serves as an accurate machine-readable contract.

Can I use OpenAPI specifications for SDK generation and validation tooling?▼

Yes, you can use OpenAPI specifications for SDK generation and validation tooling because the generated specs function as machine-readable contracts that facilitate integration with automated development tools.

How do I define an API contract for a new microservice before writing code?▼

To define an API contract for a new microservice before writing code, you generate a complete OpenAPI specification covering paths, operations, schemas, and error responses using an API-first development approach.

Does API-first development require complete OpenAPI documentation for error responses?▼

API-first development requires complete OpenAPI documentation for error responses to ensure your API documentation is accurate, comprehensive, and serves as a reliable contract between services.

What format does an OpenAPI specification use for REST API documentation?▼

An OpenAPI specification for REST API documentation uses either YAML or JSON formats to create comprehensive human-readable guides and machine-readable contracts that define paths, operations, and schemas.