Say Hello to Kato Integrations!

Say hello and welcome to Kato Integrations! We’re the leading solution provider for writing 100% RPG APIs on the IBM i.
JSON vs XML, Part 3: 12 Differences

This third of three articles provides a comparison of JSON vs XML in RPG, and 12 differences between them.
JSON vs XML, Part 2: JSON in RPG

This second of three articles provides a general history and overview of the solutions at your disposal when developing JSON in RPG.
JSON vs XML, Part 1: XML in RPG

This first of three articles provides a general history and overview of the solutions at your disposal when developing XML in RPG.
REST vs SOAP Architecture in RPG, Part 3: Comparison

REST vs SOAP architecture: which one is right for you as an RPG developer? Both can be used on the IBM i, albeit for different reasons.
REST vs SOAP Architecture in RPG, Part 2: SOAP APIs

REST APIs vs SOAP architecture: which one is right for you as an RPG developer? This second of three articles discusses SOAP on IBM i.
REST vs SOAP Architecture in RPG, Part 1: REST APIs

REST APIs vs SOAP architecture: which one is right for you as an RPG developer? This first of three articles discusses REST on IBM i.
RPG, JSON, and REST: Testing IBM i Web Services with Postman

This tutorial shows you how to test IBM i web services in RPG using both Postman and RPG API Express. Learn RPG web services the easier way.
Parsing JSON With RPG API Express 3.4

RPG web service developers need to parse JSON business data every day. This post will discuss how you can use RXS to parse sample API data.
Create JSON with RPG API Express 3.4

Easily create JSON in native RPG and communicate with IBM i web services worldwide. Read this tutorial and get started today!