OpenAPI: Beginner to Guru from Udemy

OpenAPI 3.0 is the leading tool for the documentation of APIs.

Formerly known as Swagger, OpenAPI has a long and established history. In 2010, Swagger started as an open source specification for designing and documenting RESTful APIs.

In 2015, the Swagger project was acquired by SmartBear Software. The Swagger Specification was donated to the Linux foundation and renamed the OpenAPI.

The OpenAPI specification is the cornerstone of a thriving open source community. Simply perform a search for OpenAPI tools and you will find projects for converters, documentation, validators, editors, mock servers, testing tools and much much more.

From the OpenAPI specification, you can generate client side source code for over 50 languages. You can generate server side code for over 40 different languages.

All of these open source contributes start with the OpenAPI specification, which we explore in depth in this course.

You start off the course with learning about what is an API, a review of the HTTP protocol and how it is used in respect to RESTFul APIs.

Then we start looking at OpenAPI and how it applies to documenting RESTFul APIs.

We then start writing an OpenAPI specification using Swagger Hub.

Swagger Hub is a free, easy to use on-line editor for Swagger and OpenAPI specifications.

You will get to create a complete OpenAPI specification for a RESTful web service.

Step by step, you learn how to:

Edit a OpenAPI specification in Swagger Hub
Define a OpenAPI specification in YAML
Add developer information
Add server information
Define an API path
Define an API operation
Create robust objects with JSON schema constraints
Improve the quality of your specification with re-useable components.
Define query parameters
Define path parameters
Define
Course Extra - Access to a Private Slack Community
You're not just enrolling in a course > You are joining a community learning about using OpenAPI.
With your enrollment to the course, you can access an exclusive Slack community. Get help from the instructor and other gurus from around the world - in real time. This community is only available to students enrolled in this course.
This is a very active Slack community with almost 500 Gurus.
With your enrollment, you can join this community of awesome gurus.
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Closed captioning in english is available for all course videos.
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All keynote presentations are available for you to download as PDFs.
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Enroll today and see how easy it is to use OpenAPI for your RESTFul APIs.

What's inside

Learning objectives

Learn to define apis using openapi specifications
Create awesome api documentation with swagger ui

Edit openapi specifications in swagger hub

Learn to define apis using openapi specifications
Create awesome api documentation with swagger ui
Edit openapi specifications in swagger hub

Syllabus

Introduction section for your OpenAPI (formerly Swagger) course.

Welcome

Meet Your Instructor

Getting the Most out of your OpenAPI Course

Learn why you wish to use OpenAPI in your organization

Traffic lights

Read about what's good

what should give you pause

and possible dealbreakers

Helps learners define APIs using OpenAPI Specifications and generate code for mobile, web, and desktop applications

Emphasizes using Swagger UI for creating robust API documentation

Provides an overview of HTTP and RESTful APIs

Covers advanced concepts such as components, security, and code generation

Taught by John Thompson, an experienced instructor with over 500,000 enrollments worldwide

Includes an exclusive Slack community for support and networking

Reviews summary

Comprehensive openapi foundation with practical labs

According to students, this course provides an excellent and practical introduction to OpenAPI, making complex concepts clear and digestible for beginners. Learners particularly appreciate the hands-on labs and assignments using Swagger Hub, which are crucial for solidifying understanding and applying skills directly in work projects. The instructor's clear explanations and passion for the subject are consistently praised, along with the benefit of an active Slack community. While it offers a strong foundational knowledge, some suggest the 'Guru' portion could benefit from deeper exploration of advanced enterprise-level scenarios to truly match its title.

The private Slack community offers valuable real-time help and interaction.

"The Slack community is a huge bonus, allowing for real-time questions."

"Plus, the Slack community is very active and supportive."

"I find the Slack community to be a great resource for getting help from the instructor and other students."

Provides a strong, well-structured foundation for those new to OpenAPI.

"This course is an excellent introduction to OpenAPI!"

"The 'Beginner' part is well covered..."

"I feel much more confident in my ability to design and document APIs after this course."

Focus on practical application through labs and assignments is highly effective.

"The hands-on labs with Swagger Hub were incredibly useful and solidified my understanding."

"The step-by-step guidance on creating an entire OpenAPI spec from scratch was exactly what I needed."

"The assignments were practical and helped reinforce learning."

Instructor excels at making complex API concepts easy to grasp.

"The instructor does a fantastic job of explaining complex concepts in a clear and concise manner..."

"The instructor is fantastic and breaks down complex topics like JSON Schema constraints into easy-to-digest pieces."

"The explanations for parameters and components were very clear."

External tool interfaces may change, suggesting occasional demo updates are useful.

"I think updating some of the external tool demos would be beneficial, as web interfaces change."

"I found some of the initial setup slightly confusing due to external tool changes."

While strong on basics, some desire deeper 'Guru' level content.

"My only feedback is that it could go deeper into more advanced use cases or real-world enterprise scenarios to truly earn the 'Guru' title."

"The 'Beginner' part is well covered, but the 'Guru' part feels a bit lacking."

"I was hoping for more advanced patterns, perhaps integrating with CI/CD or more complex security scenarios beyond basic auth."

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in OpenAPI: Beginner to Guru with these activities:

Review HTTP protocol

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Understand the basics of HTTP, which is used in RESTful APIs

Browse courses on HTTP

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Review the HTTP methods (GET, POST, PUT, DELETE)
Review the HTTP status codes (200, 404, 500)

Practice defining API operations

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Gain hands-on experience in defining API operations using OpenAPI

Browse courses on OpenAPI

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Create a new OpenAPI specification
Define a simple API operation (e.g., a GET operation to retrieve a list of users)
Test your API operation using a tool like Swagger Editor

Follow tutorials on OpenAPI best practices

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Expand your knowledge of OpenAPI by following tutorials from experts

Browse courses on OpenAPI

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Search for tutorials on OpenAPI best practices
Follow a tutorial on a specific topic (e.g., security, versioning)

11 other activities

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Attend a peer session on OpenAPI

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Connect with other learners and discuss OpenAPI concepts

Browse courses on OpenAPI

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Find a peer session on OpenAPI
Attend the session and actively participate in discussions

Explore Swagger Editor

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Become familiar with the Swagger Editor interface and understand how to use its tools.

Browse courses on Swagger Editor

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Access the Swagger Editor online tool.
Create a new OpenAPI Specification file.
Explore the different sections and features of the editor.

Join the Slack community for this course

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Connect with fellow students and engage in discussions to reinforce your understanding.

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Join the Slack group using the provided link.
Introduce yourself and ask any questions you may have.

Define and document OpenAPI Specifications

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Solidify your understanding and proficiency in defining and documenting APIs using OpenAPI Specifications.

Browse courses on OpenAPI

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Review the provided OpenAPI Specification documentation.
Use Swagger Hub to define an OpenAPI Specification for a RESTful web service.

Create an OpenAPI specification for a personal project

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Apply your knowledge of OpenAPI by creating a specification for a real-world project

Browse courses on OpenAPI

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Choose a personal project that involves an API
Design the API using OpenAPI
Document the API using Swagger UI

Develop an OpenAPI Specification for a personal project

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Gain hands-on experience by creating an OpenAPI Specification for a project of your choice.

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Identify a suitable project or API to document.
Use the OpenAPI Specification template to define the API.
Validate the specification using a tool like the OpenAPI Validator.

Attend an OpenAPI workshop or conference

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Deepen your knowledge and stay updated on the latest trends and best practices.

Browse courses on OpenAPI

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Research and identify upcoming OpenAPI workshops or conferences.
Register and attend the event.
Actively participate in sessions and discussions.

Attend an OpenAPI meetup

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Network with professionals in the OpenAPI community

Browse courses on OpenAPI

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Find an OpenAPI meetup in your area
Attend the meetup and introduce yourself to others

Participate in an OpenAPI hackathon or competition

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Challenge yourself and apply your skills in a competitive environment.

Browse courses on OpenAPI

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Identify an upcoming OpenAPI hackathon or competition.
Form a team or participate individually.
Develop a unique and innovative OpenAPI-based solution.

Attend an OpenAPI workshop

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Gain in-depth knowledge of OpenAPI through a hands-on workshop

Browse courses on OpenAPI

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Find an OpenAPI workshop that aligns with your learning goals
Register for the workshop and prepare for the session
Attend the workshop and actively participate in the exercises

Contribute to an OpenAPI-related open-source project

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Make a valuable contribution to the OpenAPI community and enhance your understanding.

Browse courses on OpenAPI

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Identify an OpenAPI-related open-source project to contribute to.
Review the project's documentation and guidelines.
Submit a pull request with your proposed changes or contributions.
Collaborate with other contributors to improve the project.

Career center

Learners who complete OpenAPI: Beginner to Guru will develop knowledge and skills that may be useful to these careers:

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OpenAPI

Beginner to Guru

What's inside

Learning objectives

Syllabus

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Reviews summary

Comprehensive openapi foundation with practical labs

Activities

Career center

Reading list

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