Legacy System Whisperer
Analyze COBOL copybooks, JCL jobs, and mainframe datasets. Extract business rules, map data flows, predict hardware failures, and generate modern adapters in 6 programming languages.
The Mainframe Challenge
Over 220 billion lines of COBOL are still running in production worldwide, processing 95% of ATM transactions and 80% of in-person transactions. The average mainframe developer is over 55 years old, and retirements are accelerating faster than replacements.
Legacy System Whisperer uses RAG-powered LLM analysis to understand mainframe systems at a level previously requiring decades of tribal knowledge. It extracts business rules from COBOL code, maps JCL job dependencies, and generates modern adapters that bridge legacy and cloud-native systems.
Analysis Capabilities
COBOL Copybook Parser
Deep analysis of COBOL copybooks including data structure extraction, field-level documentation, COMP-3 packed decimal handling, and record layout mapping.
- PIC clause interpretation
- COMP-3, COMP, COMP-5 handling
- REDEFINES and OCCURS support
JCL Job Analyzer
Maps JCL job dependencies, execution flows, dataset usage patterns, and utility program chains. Identifies critical paths and single points of failure in batch processing.
- Job dependency graph generation
- Dataset lineage tracking
- Critical path analysis
Business Rule Extraction
Uses LLM-powered analysis with RAG to extract business logic embedded in COBOL code, converting procedural logic into documented, testable business rules.
- LLM + RAG for code understanding
- Decision table generation
- Validation rule extraction
Modern Adapter Generation
Automatically generates modern adapters in Python, TypeScript, Go, Java, Rust, and C# that bridge mainframe systems with cloud-native applications.
- 6-language adapter generation
- EBCDIC/ASCII encoding translation
- REST API wrapper generation
Predictive Intelligence
Beyond analysis, the Legacy Whisperer predicts system failures and identifies modernization opportunities.
Failure Prediction
Analyze hardware and software patterns to predict mainframe failures before they impact operations.
Complexity Scoring
Assess modernization complexity for each component to prioritize and plan migration efforts.
Migration Roadmap
Generate a phased migration plan with dependency analysis, risk assessment, and effort estimates.
Ready to Understand Your Legacy Systems?
Unlock the knowledge trapped in your mainframe systems with AI-powered COBOL and JCL analysis.