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openapi-spec-generation

Generate and validate OpenAPI 3.1 specifications for RESTful APIs.

2|Updated Jan 18, 2026
Search Tags:#documentation#openapi#code generation#validation#contract testing#api specification
One-click install
npx skills add https://github.com/as4584/antigravity-skills --skill openapi-spec-generation-as4584
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: openapi-spec-generation
Source: https://github.com/as4584/antigravity-skills/tree/main/agents-wshobson/plugins/documentation-generation/skills/openapi-spec-generation
Command: npx skills add https://github.com/as4584/antigravity-skills --skill openapi-spec-generation-as4584

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill automates the creation, maintenance, and validation of OpenAPI 3.1 specifications, streamlining API documentation and contract management.

Core Features & Use Cases

  • Design-First API Specs: Create comprehensive OpenAPI 3.1 YAML definitions.
  • Code-First Generation: Automatically generate specs from frameworks like FastAPI (Python) or tsoa (TypeScript).
  • Validation & Linting: Ensure spec quality using tools like Spectral and Redocly.
  • SDK Generation: Use OpenAPI Generator to create client SDKs in various languages.
  • Use Case: You are building a new REST API and need to define its contract clearly. Use this skill to generate a robust OpenAPI 3.1 specification, ensuring consistency and enabling auto-generated documentation and client libraries.

Quick Start

Use the openapi-spec-generation skill to create a complete OpenAPI 3.1 specification for a user management API based on the provided design-first template.

Frequently Asked Questions about openapi-spec-generation

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 new REST API?▼

You can generate an OpenAPI 3.1 specification using a design-first approach to create comprehensive YAML definitions, or a code-first approach to automatically extract specs from frameworks like FastAPI or tsoa.

Can I automatically create API specs from existing Python or TypeScript code?▼

Yes, code-first generation automatically creates OpenAPI 3.1 specifications from existing framework code, supporting Python FastAPI and TypeScript tsoa to extract API contracts directly.

What is the best way to validate and lint an OpenAPI specification?▼

The best way to validate and lint an OpenAPI specification is using integrated tools like Spectral and Redocly, which ensure spec quality, documentation consistency, and contract compliance.

How do I generate client SDKs from an OpenAPI 3.1 YAML file?▼

You can generate client SDKs from an OpenAPI 3.1 YAML file using OpenAPI Generator, which creates client libraries in various programming languages for automated API consumption.

Does this approach support both design-first and code-first API contract workflows?▼

Yes, it supports both design-first workflows for defining comprehensive OpenAPI YAML definitions upfront and code-first workflows for generating API specs automatically from existing framework implementations.

Why validate API specifications during the documentation generation process?▼

Validating API specifications during generation ensures contract compliance and documentation quality, preventing integration errors by enforcing standards through linting tools like Spectral and Redocly.

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