WP OpenAPI
WP OpenAPI is a WordPress plugin to provide the OpenAPI spec and a beautifu viewer for your WordPress REST API.
The facts
- Rating
- 4★ from 5
- Active installs
- 400+
- Price
- Free
- Last updated
- 4 Jun 2026
- Added
- Jul 2022
- Requires WP
- 5.8
- Tested up to
- WP 6.8.8
- Requires PHP
- 7.1
- Downloads
- 33,821
Our analysis
AI-assistedWP OpenAPI is a WordPress plugin designed to generate documentation for WordPress REST APIs in accordance with OpenAPI 3.1.0 specifications. It offers an output of the OpenAPI spec at a specific URL and includes a viewer for the documentation using Stoplight’s Elements viewer.
This plugin is suitable for developers who need to document their REST APIs in a standard format and want an easy way to export this documentation for hosting on a server.
Best for: Developers looking to document their WordPress REST APIs.
What it does well
- ✓Generates OpenAPI 3.1.0 compatible documentation
- ✓Outputs documentation at /wp-json-openapi
- ✓Includes a viewer using Stoplight’s Elements viewer
- ✓Allows export of documentation as a single HTML file
Where it falls short
- •Limited information on additional features or customisation options
Verdict
WP OpenAPI provides a straightforward solution for generating and viewing API documentation. It is a useful tool for developers needing to adhere to OpenAPI standards.
From the developer
moon0326's own description of WP OpenAPI, lightly tidied.
WP OpenAPI is a WordPress plugin that generates OpenAPI 3.1.0 compatible documentation for your WordPress REST APIs.
It has two main features.
- Outputs OpenAPI 3.1.0 spec at /wp-json-openapi
- Provides OpenAPI viewer using Stoplight’s awesome Elements viewer
You can also export your documentation as a single HTML to host it in a server easily.
See more details at https://github.com/moon0326/wp-openapi