The first agentic development environment for the mainframe.
Use AI agents to navigate TN3270, inspect datasets, write JCL, debug jobs, query VSAM, and operate inside z/OS from a modern development environment.
Need access to a mainframe?
Fill out the form and we'll send you credentials to try Hopper on our mainframe for free.
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Built by leading minds behind the world's most advanced AI and technology
Our team unites top researchers, engineers, and strategists from pioneering companies and institutions—all focused on building systems that deliver real impact.
Compile, test, ship in one prompt
Drives the JCL, parses JES return codes, NEWCOPYs into CICS, and pauses for your approval before every change.
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Debug failed jobs without hunting through SDSF
Hours of SDSF triage in one @-tag. The agent decodes JESMSGLG, JESYSMSG, and SYSUDUMP into the abend code, failing step, and source line.
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A real TN3270 terminal, when you need it
Works exactly like the TN3270 you've used for years. Full PF, PA, and attention-key support.
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Pricing
Hobby
Free
Includes:
- No credit card required
- macOS, Windows, and Linux
- Connect to your own mainframe
- All core Hopper features
Enterprise
Custom
Everything in Hobby, plus:
- SAML SSO
- MCP Server Access
- Admin and Model Controls
- Org-wide Privacy Controls
- No Model Training
- Priority Support
- On-prem / VPC Deployment
- SOC 2 & Pen Test Reports
Join our community
Connect with builders using Hopper, follow product updates, and swap ideas with the Hypercubic team.
