openapi-spec-generation

Generate and validate OpenAPI 3.1 specifications from code and design inputs.

3|1|Updated Feb 3, 2026
One-click install
npx skills add https://github.com/duanbiao2000/obsidianDoc26 --skill openapi-spec-generation-duanbiao2000
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: openapi-spec-generation
Source: https://github.com/duanbiao2000/obsidianDoc26/tree/main/agents-main/plugins/documentation-generation/skills/openapi-spec-generation
Command: npx skills add https://github.com/duanbiao2000/obsidianDoc26 --skill openapi-spec-generation-duanbiao2000

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Generate and maintain OpenAPI 3.1 specifications from code, design-first inputs, and validation patterns, enabling consistent API contracts and accurate documentation across teams.

Core Features & Use Cases

  • Design-First: draft OpenAPI specs before or alongside code to align API contracts with implementation.
  • Code-First & Hybrid: derive specs from codebases or annotate existing code to keep docs in sync; validate against contract requirements.
  • Validation & Templates: reusable OpenAPI templates with security schemes, examples, and versioning to accelerate documentation portals and SDK generation.

Quick Start

Run the OpenAPI spec generation workflow to produce a production-ready OpenAPI 3.1 document from your codebase or design documents.

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 from existing code?

You can generate an OpenAPI 3.1 specification from existing code by running the OpenAPI spec generation workflow, which derives production-ready API documents directly from your codebase while keeping docs in sync using code-first and hybrid patterns.

What is design-first API documentation and when should I use it?

Design-first API documentation involves drafting OpenAPI specs before or alongside code to align API contracts with implementation. It is used to establish consistent API contracts across teams before development begins.

Can I validate my API code against an OpenAPI contract?

Yes, you can validate your API code against an OpenAPI contract by applying validation patterns that check your codebase against design-first inputs and contract requirements to ensure accurate documentation and compliance.

How do I create reusable OpenAPI templates with security schemes?

You create reusable OpenAPI templates with security schemes by applying modular templates and reusable components during spec generation, enforcing robust security schemes and examples to accelerate documentation portals and SDK generation.

Does this approach support SDK generation from OpenAPI 3.1 documents?

Yes, this approach supports SDK generation by producing production-ready OpenAPI 3.1 documents that include modular templates, robust security schemes, and reusable components specifically structured to accelerate SDK generation.

What is the best way to maintain OpenAPI specs across hybrid workflows?

The best way to maintain OpenAPI specs across hybrid workflows is to annotate existing code and derive specs from codebases, ensuring documentation stays in sync with implementation while validating against contract requirements.