Gestell
© Gestell, Inc 2026
Gestell© Gestell, Inc 2026
The process by which the new is folded into the old, accelerating both. AI Agents built specifically for COBOL and mainframes.
Book a callWe start with detailed and thorough analysis of z/OS and IBM i systems, mapping architecture, code paths, dependencies, and operational workflows before recommendations are made.
Our AI systems are specifically trained on legacy system languages - COBOL, JCL, RPG, Assembler, and more. We understand the syntax, patterns, and architectural conventions of systems built decades ago enabling accurate analysis of complex legacy codebases that generic and static tooling misses.
We deploy specialized AI agents - each designed for specific tasks like dependency mapping, business logic extraction, or performance analysis. These agents work autonomously to parse millions of lines of code, trace data flows, and build comprehensive system intelligence.
The Gestell team works in your environment, within your security boundaries. We combine AI agents with human orchestration to dramatically scale work output and ensure success where others might fail. No offshore teams - just accountability where the work happens.
Comprehensive documentation and analysis of your legacy systems. Our AI agents map your entire codebase, extract business logic, and create interactive documentation platforms where your team can query decades of code instantly. Understand what you have before deciding what to change.
Accelerate your mainframe operations with secure AI agents connected directly through MCP. Unlock real-time insights, resolve challenges faster, and modernize systems engineering workflows.
Bring your legacy system into the cloud utilizing AI agents that preserve business logic. Our agents bridge legacy to modern while maintaining functional equivalence, with rigorous validation ensuring no logic is lost. We handle data migration, testing frameworks, and parallel run strategies to de-risk the transition.
Custom fine-tuned versions of AI agents specialized for specific codebases or proprietary datasets are available for repetitive engineering tasks.