Open Banking

Adapt to the Standard you own this product

This project is part of the liveProject series Open Banking App Using OpenAPIs and Spring Boot
intermediate Java • beginner Spring Boot • beginner build tools
skills learned
code generation from OpenAPI • calling third-party applications using WebClient • circuit breaker pattern for Spring applications
Nathan Crocker
1 week · 5-7 hours per week · INTERMEDIATE

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5, 10 or 20 seats+ for your team - learn more

Look inside
In this liveProject, you’ll build an API that can integrate your customer’s transaction data from a third party. You’ll construct a robust client with OpenAPI and WebClient, and make HTTP requests with Spring Boot. You’ll then develop a pipeline of enrichment for the merchant data you acquire through your API.
This project is designed for learning purposes and is not a complete, production-ready application or solution.

book resources

When you start your liveProject, you get full access to the following books for 90 days.

project author

Nathan Crocker

Nathan B Crocker is a Senior Java Developer at Galaxy Digital LP., one of the premier financial services and investment management companies in the digital asset and cryptocurrency sector. He is focused on building and augmenting front and middle office systems to grow trading operations and scale the business. For over a decade, he has built dozens of financial services applications, using Spring Boot to build traditional services, microservices, and event-driven systems for several FinTech companies, as well as large investment banks.


The liveProject is for intermediate Java programmers who know the basics of Spring Boot and REST services. This project will use the last stable version of Java 14. To begin this liveProject, you will need to be familiar with:

  • Intermediate Java
  • Beginner Spring Boot
  • Beginner build tools

you will learn

In this liveProject, you’ll master the technology stack used for professional Java development. You’ll learn the ins and outs of integration, one of the most common tasks in software development.

  • Consuming external data and integrating it with your application using Spring’s WebClient
  • Integrating with OpenAPI
  • Code generation from OpenAPI
  • Calling third-party applications using WebClient
  • Circuit breaker pattern for Spring applications


You choose the schedule and decide how much time to invest as you build your project.
Project roadmap
Each project is divided into several achievable steps.
Get Help
While within the liveProject platform, get help from other participants and our expert mentors.
Compare with others
For each step, compare your deliverable to the solutions by the author and other participants.
book resources
Get full access to select books for 90 days. Permanent access to excerpts from Manning products are also included, as well as references to other resources.

choose your plan


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  • five seats for your team
  • access to all Manning books, MEAPs, liveVideos, liveProjects, and audiobooks!
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