RPG-based IBM i toolkits designed to simplify your integration needs
Enhance your IBM i like never before. Get in touch to learn more.
A 100% RPG-based solution saves you from hybridizing your development with open source, helping you create the most secure integration on your IBM i. RPG API Express helps you develop secure programs up to current TLS standards.
Get access to a team of RPG development experts for assistance when you need it. Our professional services staff has implemented hundreds of APIs using both REST and SOAP for JSON and XML environments. We extend your team's capabilities to ensure every project is delivered on-time at the highest quality.
Our one-solution approach gives you the ability to connect your IBM i to 3rd party applications, giving you access to valuable partner data without having to rely on a patchwork of open source options. Accelerate application development with a suite of tools to build RPG-based web APIs.
Resolve all of your API requirements with a uniform, versatile toolkit of RPG subprocedures
Implement an agile, tailored solution for your integration needs within a matter of days
Beat the competition while building a sustainable, scalable enterprise
Try RPG API Express in your environment with a 100% free proof of concept and fully-featured 30-day trial.
Our team of expert IBM i developers work with you to provide answers and customized solutions for your next API project.
Discuss, develop, and deploy - with only a few short steps, you'll receive a solution to your API problem.
We'll let you try RPG API Express 100% free of charge with zero billing information required.
Kato Integrations builds API tools and services specifically for the IBM i platform. The core product — RPG API Express — lets IBM i developers build and consume web services using 100% native RPGLE, without Java, middleware, or open source dependencies. Alongside that, Kato offers pre-built API toolkits for common integration needs, IBM i cloud hosting through Kato Spaces, and professional services for organizations that need integrations built by an expert RPG team. Everything Kato does is focused on the IBM i environment.
Kato’s products are built for organizations running IBM i systems — whether that’s a development team looking to build or consume REST and SOAP APIs in RPG, an IT manager who needs integrations delivered on deadline, or an executive looking to modernize the IBM i environment without a full platform migration. If your business runs on IBM i and you need to connect it to modern third-party services or expose your data via APIs, Kato is built for that problem specifically.
Most IBM i shops that need API connectivity end up layering Java, Python, or other open source tools on top of their RPG environment — which introduces complexity, security surface area, and dependencies that the IBM i team may not be equipped to maintain. A 100% RPG-based solution means your integrations run natively on the IBM i, leveraging its performance and security characteristics rather than working around them. Your RPG developers can build, maintain, and troubleshoot the code without switching contexts or bringing in outside expertise.
Yes. RPG API Express connects IBM i systems to virtually any REST or SOAP API — whether that’s Salesforce, shipping carriers like FedEx and UPS, payment processors like PayPal and CyberSource, address validation services, Amazon Web Services, or any other service with a documented API. The pre-built API Toolkits cover the most common integration needs out of the box. If you have a specific API in mind, the free proof of concept is the fastest way to confirm it’s achievable.
RPG API Express is the full toolkit — a library of subprocedures and utilities that gives RPG developers everything they need to build any API integration from scratch. The API Toolkits are pre-built solutions for specific use cases — address validation, UPS shipping, and credit card processing via CyberSource — that are faster to implement when you need one of those specific integrations. Professional Services is Kato’s development team building the integration for you, using RPG API Express, when you need the work done without doing it yourself. Many organizations use a combination of all three depending on the project.
Yes — that’s precisely the use case Kato is built for. Migrating off IBM i is expensive, risky, and often unnecessary for organizations whose core business logic runs well on the platform. Kato’s approach is to extend the IBM i’s capabilities so it can participate in modern API ecosystems — connecting to cloud services, exposing data to modern front-ends, integrating with SaaS tools — without replacing the system that’s running your business. The IBM i stays as the system of record; Kato makes it a connected participant in your broader technology environment.
