Type	Documentation	Reference
Specification	Swagger	Flask-RESTX
		Swagger Client
Tool	Swagger UI	Tool based on Swagger
Tool	Redoc	Using OpenAPI Standard (fka Swagger)
Tool	DapperDox	Open-Source API documentation generator and server for OpenAPI Swagger specifications
Tool	42Crunch	Create API Documentation based on OpenAPI with Swagger, also provided function for checking API Security
Specification	OpenAPI	Work with WebSphere Application Server Liberty (Java)
		FaskAPI + OpenAPI

Swagger

Work with Flask

Library	Description
Flask-RESTful	Create RESTful API
Flask-RESTPlus	Added Swagger into Flask-RESTful to generate API Documentation
Flask-RESTX	New version based / forked from Flask-RESTPlus due to lack of maintenance of Flask-RESTPlus

Use Swagger (Flask-RESTX) with API Core

doc - Swagger route root

# Browse to http://127.0.0.1:[HOST PORT]/api/doc for Swagger doc
api = Api(app, version='0.0.1', title='Flask-RESTX and Swagger test', doc='/api/doc')
# Disable Swagger in Flask-RESTX
api = Api(app, version='0.0.1', title='Flask-RESTX and Swagger test', doc=false)

Documenting with the @api.doc() decorator

Flask-RESTX Documentation Reference

@api.route('/my-resource/<id>', endpoint='my-resource')
@api.doc(params={'id': 'An ID'})
class MyResource(Resource):
    def get(self, id):
        return {}

    @api.doc(responses={403: 'Not Authorized'})
    def post(self, id):
        api.abort(403)

OpenAPI

Generate TypeScript using OpenAPI Documentation

真・用 OpenAPI 打通前後端任督二脈

References

difference between Flask-RESTful and Flask-RESTx
Flask RestPlus VS flask-restx
月光下的Flask之旅系列 第 28 篇 - Day 28 Flask-RESTX
Flask 学习-46.Flask-RESTX 生成 Swagger 文档入门教程
Documenting with the decorator
Flask API Documentation using Flask-Restx (Swagger for Flask)
Setting Up Swagger 2 with a Spring REST API Using Springfox