Cobuild Nexus
Your private AI engine for the mainframe
Cobuild Nexus is a secure server that connects to your mainframe and brings AI-powered understanding to decades of code.
It runs entirely in your environment—on-prem or private cloud—so your data stays under your control.
Teams can extend Nexus through a REST API, building their own custom clients and integrations, or start right away with the pre‑built Cobuild applications (Insight, Code Assist, RCA) for instant value.
Nexus supports flexible LLM deployment: you can select and run models based on the compute resources available in your on‑prem environment, or connect to external LLM providers via API if you prefer to leverage cloud‑hosted models.
Nexus delivers cross-system intelligence, understanding code that spans your mainframe, distributed repositories like GitHub, and other sources so it can reason across the entire estate.
With customizable language models and full mainframe context, Nexus makes it easy to search, analyze, and answer questions about your entire codebase—without installing software on the mainframe itself.
Pre‑built Applications
Ready-to-use apps on Nexus that give teams instant value.
Cobuild Insight
Ask questions. Get answers.
Cobuild Insight is a conversational agent powered by Nexus that lets anyone query the entire mainframe codebase in plain English.
Whether you need to trace a field across programs, uncover hidden dependencies, or understand a business rule written decades ago, Insight returns clear, context-rich explanations drawn directly from your live systems.
Cobuild Code Assist
Deep code understanding inside your IDE.
Code Assist brings Nexus intelligence into the tools developers already use—VS Code, terminal emulators, and more.
It can explain unfamiliar modules, surface cross-program impacts, suggest changes, and even help craft fully-featured edits, all with full awareness of the mainframe environment and its data flows.
Cobuild RCA (Root Cause Analysis)
Find problems fast.
When something breaks, Cobuild RCA pinpoints the source.
It analyzes logs, job runs, code relationships, and abend outputs to quickly identify likely causes of errors or performance issues, giving teams actionable insights to resolve incidents before they ripple through production.
Cobuild Cloud
All the power of Nexus—hosted for you
Cobuild Cloud delivers the full capabilities of Cobuild Nexus as a managed service.
Run your AI-powered mainframe environment without setting up servers or managing infrastructure, and start gaining insights in days instead of weeks.
Your data stays protected in a private, single-tenant deployment with encryption at rest and in transit.
Flexible deployment options let you connect securely to on-prem mainframes or hybrid cloud environments, and you can still choose the language model that best fits your policies and workloads.
