103 - OpenAPI Without Pain: The Guide I Wish I Had
> Document your APIs without going crazy_
Learn OpenAPI from zero to advanced level. Validations, components, inheritance and auto-generators. The definitive guide every developer needs.
1.7 hours
Online on-demand
Beginner
€99
Note: This course is currently only available in Spanish. Contact us if you're interested in an English version.
Why this course?
Documenting APIs is painful. OpenAPI promises to solve that, but the learning curve can be brutal.
Nested schemas, circular references, validations that don’t work, inheritance that breaks… If you’ve tried writing a complex OpenAPI specification, you know what I’m talking about.
This course is the guide I wish I had when I started with OpenAPI. No detours, no unnecessary theory. Just what you need to know to document APIs professionally.
21 practical lessons that take you from zero to handling complex cases with ease. And 23 downloadable resources so you have examples ready to copy and adapt.
What you’ll learn
- OpenAPI 3.x fundamentals: The solid foundation you need
- Schemas and data types: How to define complex structures without going crazy
- Advanced validations: Patterns, formats, restrictions and custom validation
- Reusable components: DRY applied to OpenAPI specifications
- Inheritance and polymorphism: allOf, oneOf, anyOf demystified
- References and modularity: How to organize large specifications
- Auto-generators: Generate code, clients and documentation automatically
- Tool integration: Swagger UI, Redoc, Postman and more
Curriculum
Chapter 1: What’s This About?
- What is OpenAPI and why use it
- History: from Swagger to OpenAPI
- Basic structure of a document
Chapter 2: Writing OpenAPIs Without Pain (14 lessons)
- Basic definitions
- Paths and operations
- Parameters (path, query, header)
- Request body and responses
- Schemas and data types
- Validations and restrictions
- Reusable components
- References with $ref
- Inheritance with allOf
- Alternatives with oneOf/anyOf
- Custom extensions
Chapter 3: OpenAPI Auto-Generators
- Server code generation
- Client generation
- Automatic documentation
- Framework integration
Chapter 4: Final Checkpoint
- Assessment quiz
Chapter 5: Slides
- Downloadable PDF resources
Chapter 6: BONUS
- Additional video with advanced tricks
Who is this for?
- Backend developers who need to document their APIs
- Frontend developers who consume APIs and want to understand the specification
- Software architects who design API contracts
- Tech writers responsible for technical documentation
- QA engineers who use specifications for testing
Prerequisites
- Basic knowledge of REST APIs
- Familiarity with JSON or YAML
- Experience using APIs (as consumer or producer)
No prior OpenAPI experience needed. We start from zero.
What’s included
- 1.7 hours of video structured in 21 lessons
- 23 downloadable resources: examples, templates and cheatsheets
- Access on mobile app and TV to learn at your own pace
- Lifetime access with no time limit
- Certificate of completion upon finishing the course
- Free updates as OpenAPI evolves
Interested in this course?
Tell us about your team and we'll prepare a personalized proposal
Request information
Write to us with the number of people and approximate dates. We'll respond within 24 hours.
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