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andrlange
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spring-boot-4x-api-documenter

Generate OpenAPI 3 documentation for Spring Boot 4.x REST APIs using springdoc-openapi v3.0.

Updated Aug 27, 2026
Search Tags:#documentation#openapi#spring-boot#springdoc-openapi#api-documentation#swagger-ui
One-click install
npx skills add https://github.com/andrlange/spring-documentation-mcp-server --skill spring-boot-4x-api-documenter
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: spring-boot-4x-api-documenter
Source: https://github.com/andrlange/spring-documentation-mcp-server/tree/main/flavors/claude/skills/documentation/api-documenter-sb4x
Command: npx skills add https://github.com/andrlange/spring-documentation-mcp-server --skill spring-boot-4x-api-documenter

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill auto-generates OpenAPI 3/3.1 specifications for Spring Boot 4.x REST APIs using springdoc-openapi v3.0.0, enabling quick, accurate API documentation and interactive UI generation.

Core Features & Use Cases

  • OpenAPI 3.0/3.1 Specifications: Generates up-to-date API contracts from controllers and DTOs.
  • Swagger UI / Scalar UI Integration: Provides interactive API docs out of the box.
  • Security & Grouped APIs: Configures security schemes and grouped endpoints for organized docs.
  • Versioning Support: Initial compatibility with Spring Framework 7 for API versioning.

Quick Start

Add the springdoc-openapi starter dependency for Spring Boot 4.x (WebMvc/WebFlux), boot the application, and access the interactive Swagger UI at /swagger-ui.html. The OpenAPI JSON is available at /v3/api-docs.

Frequently Asked Questions about spring-boot-4x-api-documenter

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

FAQPage Schema
How do I auto-generate OpenAPI documentation for my Spring Boot 4.x REST API?▼

Auto-generate OpenAPI 3 specs by adding the springdoc-openapi v3.0 starter dependency to your Spring Boot 4.x project, then boot the application. OpenAPI JSON is available at `/v3/api-docs` and interactive Swagger UI at `/swagger-ui.html`.

Does springdoc-openapi work with Spring Boot 4.x?▼

Yes, springdoc-openapi v3.0 is designed for Spring Boot 4.x projects using both WebMvc and WebFlux. It automatically extracts endpoint schemas, request/response models, and security definitions from your controllers and DTOs.

Can I organize my API endpoints into groups in the OpenAPI documentation?▼

Yes, springdoc-openapi supports grouped APIs within the OpenAPI spec generation. Configure endpoint grouping to organize your documented APIs logically in the interactive Swagger UI.

What do I need to document before generating OpenAPI specs?▼

Document your REST controllers, DTOs, endpoint descriptions, security schemes, and example payloads. springdoc-openapi extracts this metadata automatically to generate complete OpenAPI 3 specifications and Swagger UI.

How do I add security definitions to my auto-generated API documentation?▼

Configure security schemes in springdoc-openapi, and the tool includes them in the OpenAPI spec generation. Security definitions appear in both the JSON spec and interactive Swagger UI for client integration.

What happens when I modify my Spring Boot controllers or DTOs?▼

springdoc-openapi regenerates your OpenAPI specs automatically on application boot. Controller changes, new endpoints, and DTO modifications are reflected in the updated `/v3/api-docs` and Swagger UI without manual intervention.

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