Generic LLMs guess statistical translations and botch packed COMP-3 decimals. Pure terminal tools leave modern AI agents in the dark. CobolIQ unifies both worlds into a single CLI @ MCP architecture: an air-gapped Rust CLI that scans multi-million LOC portfolios in <0.08s + a native Model Context Protocol (MCP) server empowering Claude Code, IBM Bob, and Cursor to query legacy portfolios with 100% compiler-grade CodeTruth — cutting mainframe research from 7 days to 15 minutes.
On October 21, 2026, Gareth Yoder (Cash Program Technical Lead at Vanguard, managing an $8.5T ledger with 30M calls/day) shared on the AI Engineer stage how an MCP server was the turning point: exposing legacy codebase knowledge to AI tooling cut research cycles from a full week to 15 minutes. CobolIQ delivers the unified CLI @ MCP standard — combining native Model Context Protocol stdio speed with offline air-gapped terminal verification.
When developers paste 15,000 lines of COBOL and JCL into a generic LLM prompt, the model burns context tokens, misinterprets COMP-3 packed decimal bytes, and hallucinates cross-copybook dependencies. Standalone terminal CLIs can parse code, but cannot feed live AST intelligence into agent loops.
CobolIQ CLI @ MCP bridges this chasm. A single high-performance Rust executable operates in two synchronized modes: an ultra-fast terminal CLI for batch CI/CD audits, and a native Model Context Protocol (MCP) server that feeds pre-indexed AST CodeTruth directly to Claude Code, IBM Bob, and Cursor in <5ms.
Maps EXEC CICS LINK, XCTL, PERFORM, and JCL job step handovers deterministically across programs.
Filters 85% procedural memory noise (MOVE SPACES/ZEROS) into closed-form algebraic formulas with copybook lineage.
Traps dirty bytes (0x40 space in COMP-3 packed decimals) and pointer overruns before batch runtime.
Delivers instant DORA Article 8 & 9 ICT asset dependencies and GDPR Art. 30 data sinks in JSON/Markdown.
{
"mcpServers": {
"coboliq": {
"command": "coboliq",
"args": ["--stdio"]
}
}
}coboliq --audit .
Why mission-critical core banking and ledgers cannot be refactored via copy-paste prompts.
| Dimension | Raw LLM Prompting (Flat Context) | CobolIQ Enterprise CLI @ MCP Engine |
|---|---|---|
| Legacy Research Time | 5 – 7 days per research cycle (Manual code tracing) | 15 minutes (Vanguard empirical benchmark) |
| Context Token Overhead | 100,000+ tokens burned per file (Rapid context saturation) | <500 tokens of pre-distilled AST CodeTruth |
| COMP-3 Packed Decimal Math | Hallucinates double/float → Silent cent rounding drift | 100% Bit-exact BCD integer algebra (0 penny error) |
| Cross-Program Call Chains | Blind to external JCL, CICS XCTL, and DB2 triggers | Topological AST-SLS execution graph across all steps |
| Data Privacy & Air-Gap Security | Proprietary banking code leaked to public cloud LLMs | 100% On-Premise Stdio Protocol · Zero Network Call-Home |
While IBM and generic AI vendors debate syntax translation vs. platform lock-in, the industry faces an immutable deadline: institutional knowledge is retiring. Successful modernization requires solving two distinct jobs:
Extracting what is structurally encoded in the code: call chains (XCTL, LINK), nested read loops, and algebraic formulas as verified mathematical fact in milliseconds — never a probabilistic LLM guess.
Capturing the undocumented exception before the senior engineer retires. When you give them a verified topological map, they confirm it in one afternoon instead of struggling to reconstruct it from memory.
Direct Zero-Copy reading of VSAM (KSDS/ESDS), Sequential FB/VB, EBCDIC CP037, and bit-exact COMP-3 packed decimals directly into Parquet/NDJSON without running clumsy, expensive JVM emulators.
One unified AST engine. Zero third-party cloud leaks. We cover the entire mission-critical enterprise surface across banking, healthcare, insurance, manufacturing, and government.
InterSystems Caché · IRIS · VA VistA · Epic Systems
Decodes hierarchical global storage arrays (^PATIENT(ID)), naked references, indirection (@), and nested routines directly into PostgreSQL relational schemas and FHIR-ready REST models.
IBM z/OS v4-v6 · S/370 / S/390 / z/Architecture · CICS · DB2
Performs static S0C7 Memory Nuke hazard analysis, cross-language COBOL CALL vs HLASM DSECT buffer overruns, cross-copybook REDEFINES lineage, step-level JCL dependency trees, and DORA Article 8 & 9 risk documentation in <0.08s.
Enterprise PL/I · Easytrieve Plus · REXX Macros
Disentangles 50-year-old actuarial premium formulas, dynamic pointer structures, and complex batch reporting jobs into pure closed-form algebraic equations.
RPG III · RPG IV · ILE RPG · Free-Format · SQLRPGLE
Deconstructs fixed-column indicators, display files (DSPF), physical/logical file access paths, and embedded SQL into modern TypeScript and Python data models.
Software AG Natural · Adabas · High-Level Assembler
Parses Adabas database descriptors (DDM), Natural procedural blocks, and low-level HLASM DSECT register manipulations into clean C++ and Rust microservices.
KSDS · ESDS · RRDS · BMS Screen Mapsets
Extracts raw mainframe binary datasets directly into JSON Lines with 100% schema fidelity, while transpiling 3270 terminal screens into reactive HTML5 and REST endpoints.
COBOL · JCL Dependencies · CICS Lineage · DB2 & VSAM Data Sinks
Eliminates multi-month manual discovery cycles. Parses millions of lines of COBOL, JCL job steps, and CICS transaction boundaries in <5ms. Extracts bit-exact algebraic business formulas, packed decimal lineage, and hidden call topologies directly into machine-readable AST via MCP.
Topological DAG · Dead I/O Elimination · 100% Air-Gapped CLI @ MCP
Parses complex JCL job streams in <0.05s. Detects DISP=OLD Sysplex locking bottlenecks, identifies orphan datasets, and compresses SLA batch windows by 85%+ to flatten R4HA peak MSU spikes without touching production hardware.
6x4 Token-Slot Concurrency · SIMD AbendGuard · Zero-Hop REST
Runs high-velocity parallel batch execution on top of GnuCOBOL / LLVM. The 6x4 Token-Slot concurrency engine processes 35,000,000+ records/sec, while AbendGuard automatically quarantines and repairs dirty bytes (0x40 spaces in COMP-3, S0C7, S0C4) with zero daemon crash.
Stop guessing what legacy COBOL, CICS, and JCL actually compute. CobolIQ delivers an offline-first, deterministic AST manifold engine that exposes 100% bit-exact business formulas, two-phase commit boundaries, and call topologies directly to your engineering team and AI tooling via MCP.
| Capability / Metric | Manual Consulting Audit | Generic AI (Copilot / Raw LLMs) | CobolIQ CodeTruth CLI @ MCP |
|---|---|---|---|
| Discovery & Research Velocity | 6 – 12 Weeks per Subsystem | Context window choke, token bloat | <15 Minutes (Vanguard Benchmark) |
| Packed Decimal Accuracy | Human reading mistakes | Hallucinates float / loses cents | 100% Bit-Exact Fixed-Point Lineage |
| Cross-Program Dependency Trace | Manual spreadsheet tracking | Blind to JCL steps & CICS boundaries | Deterministic Topological DAG (<5ms) |
| Data Privacy & Air-Gap Security | NDAs with 3rd-party contractors | Exfiltrates proprietary code to cloud | 100% Offline / Air-Gapped Local Execution |
Mainframe batch jobs run sequentially on single-threaded z/OS steps, while dirty input data causes catastrophic midnight S0C7 data abends. RapidCOBOL combines the open C-ABI compiler power of GnuCOBOL / LLVM with CobolIQ's 6x4 Token-Slot parallel state arena, lock-free reentrancy, and automated AbendGuard quarantine.
| Execution Dimension | IBM z/OS JES2 Mainframe Batch | Java / Spring Boot JVM Transpilers | RapidCOBOL™ (6x4 Engine) |
|---|---|---|---|
| Peak Batch Throughput | ~600,000 rec/sec (Single-threaded I/O) | ~1,200,000 rec/sec (GC pause choke) | 35,000,000+ rec/sec (Parallel SIMD) |
| Concurrency & Memory Locks | Sequential job step / DISP=OLD lockouts | Java Mutexes / Synchronized contention | 6x4 Token-Slot Arena (Zero Mutex, Lock-Free) |
| Dirty COMP-3 / S0C7 Handling | Fatal S0C7 Abend → Whole batch aborted | Unhandled Exception → Thread crash | AbendGuard Auto-Quarantine (0 Downtime) |
| Cloud / REST Gateway Latency | 15–45ms via MQSeries / Connect bridges | 8–25ms via Spring Boot / Tomcat | <50µs Embedded Zero-Hop HTTP/REST |
| Deployment Footprint | Proprietary z/OS Mainframe | Heavy JVM Container (2–4GB RAM) | Single Native Binary / Red Hat UBI 9 (<30MB) |
In IBM z/OS environments, 40-year-old unbuffered sequential I/O handovers and unnecessary DISP=OLD dataset locks artificially inflate your 4-Hour Rolling Average (R4HA) peak spikes — forcing companies and enterprises to overpay hundreds of thousands in monthly IBM MLC software license fees and millions in overpaid manual consulting.
CRITICAL-PATH™ (powered by mainframe-io-optimizer) is a 100% offline, air-gapped engine that constructs the topological execution DAG, performs automated Overload Tracing, and purges wasted DASD I/O in <0.05 seconds.
Constructs the full mathematical execution graph across job streams, identifying concurrent scheduling waves to shrink nightly batch windows before morning SLAs.
Flags read-only steps locked with exclusive dataset dispositions, unlocking parallel sysplex execution across LPARs and flattening MSU spikes.
Finds intermediate sequential files written to DASD that are never read downstream, eliminating millions of wasted EXCPs and unneeded storage charges.
Zero agents or intrusive software installed on your mainframe. 100% offline JCL & COBOL analysis executed locally in milliseconds with zero security clearance friction.
While generic LLMs hallucinate syntax and miss silent packed decimal crashes, CobolIQ relies on four formal compiler-grade mathematical pillars.
Maps multi-million LOC legacy portfolios into a unified topological space for instant semantic clustering, blast-radius dependency audits, and bimodal Code ↔ Document PaperTrace under DORA Art. 8 & 9.
Smashes 50-year-old procedural monoliths: collapses 700 lines of procedural memory noise (MOVE SPACES, dirty flags) into pure closed-form algebraic formulas with bit-exact BCD fixed-point math.
Maps millions of lines of interconnected COBOL, JCL, and CICS call graphs in <15 minutes. Employs our proprietary AST-SLS Synaptic Topology to mathematically extract exact data sinks, transactional boundaries, and cross-program dependencies without hallucinating LLMs.
Sub-second JCL DAG parsing coupled with a 6x4 Token-Slot parallel GnuCOBOL runtime. Executes 35,000,000+ records/sec, eliminates DISP=OLD bottlenecks, and automatically traps S0C7 / S0C4 dirty bytes with zero batch failures.
In 40-year-old enterprise and mission-critical legacy systems, over 85% of legacy COBOL is mechanical plumbing (screen formatting, memory buffer zeroing, tape alignment). Only 15% represents the actual core business logic. CobolIQ automatically filters out the procedural noise to deliver clean, executable business formulas.
Replaces 6 months of manual "grep & pray" code archaeology and heavy middleware projects. Automatically extracts fee formulas, interest APR schedules, rating tables, and credit scoring rules into clean JSON, CSV, and INI rule sheets — while instantly transpiling BMS 3270 maps and COMMAREA buffers into zero-hop Cobol@Rest endpoints (<50µs latency).
Eliminates the fear of touching legacy systems when senior engineers retire. Reconstructs full mathematical ground truth directly from the code, giving modern cloud teams exact functional specs with zero tribal knowledge gaps.
Enables safe migration to Azure/AWS: run newly extracted microservices in "Shadow Mode" alongside the mainframe, validating calculation parity down to the exact penny with zero floating-point drift.
Every extracted formula is cryptographically traced to its exact source file, line number, and copybook variable. Deliver instant compliance matrices required by European Central Bank, BaFin, and FIN-FSA regulators.
Auditors and regulators (DORA, BaFin, EBA, SEC) do not accept probabilistic guesses. CobolIQ delivers 100% reproducible, bit-exact data contracts and verified calculation lineage.
The original engineers retired decades ago. You cannot afford to touch it blindly, and compliance regulations mandate full architectural documentation.
$250,000+ entry licensing cost. 6-month onboarding overhead. Massive mainframe MIPS consumption and heavy vendor lock-in. Out of reach for agile modernization teams.
Months of hallucinating translations that silently botch COMP-3 packed decimals, pointer arithmetic, and Linkage structures — triggering multi-million dollar outages in production.
Hiring 15 manual consultants for $2M+ to grep repositories for months. 40%+ human error rate on DSECT displacements, missing midnight batch S0C7 memory corruption.
Dual architecture: a native Model Context Protocol (MCP) server for Claude Code, Cursor, and IBM Bob + single air-gapped Rust CLI binary + VS Code IDE extension (.VSIX). Runs 100% locally on your internal hardware with zero cloud leaks. Slashes legacy discovery from 7 days to 15 minutes, with full cross-language memory hazard analysis, algebraic rule extraction, and DORA audit packs in under 0.08 seconds.
We solve critical bottlenecks at every level of the enterprise ecosystem — from autonomous AI coding agents to air-gapped core banking environments.
Equip your engineers and autonomous AI coding agents (Claude Code, Cursor, IBM Bob) with native Model Context Protocol (MCP) stdio access and installable .VSIX extensions. Slashes legacy research cycles from 7 days to 15 minutes with zero hallucination.
Protect project margins by compressing 4 weeks of tedious manual legacy discovery into a 24-hour deterministic audit. Win enterprise RFP bids with hard mathematical proof and White-Label Discovery Reports.
Eliminate key-person risk with 100% on-premise execution. Self-contained Docker containers deploy directly into air-gapped server environments with zero internet access, delivering full DORA and GDPR audit packs.
Deploy CobolIQ seamlessly into your existing security, development, and AI agent workflows.
Model Context Protocol stdio interface for Claude Code, IBM Bob, Cursor, and GitHub Copilot + Instant Air-Gapped Terminal CLI. Exposes pre-indexed AST CodeTruth directly to agents, cutting research from 7 days to 15 minutes with zero token bloat.
Single self-contained native executable for Windows, Linux, and macOS. Sub-0.08s execution, integrated into offline CI/CD pipelines, JCL DAG analyzers, and air-gapped terminal workstations with zero network dependencies.
Native Rust Language Server (LSP) with live DSECT byte-offset Inlay Hints, Abend Hunter diagnostics, 50+ IBM machine opcodes autocomplete, and cross-copybook jump-to-definition.
Ready-to-deploy container for internal Kubernetes clusters or on-premise servers. Certified for environments with 0% outbound internet connectivity.
A high-performance standalone desktop UI. Visualizes memory layouts, call graphs, and AST schemas locally with zero network footprint.
Upload your encrypted project archive to a dedicated SFTP dropzone under strict mutual NDA. We run the full AST extraction and return comprehensive DORA/S0C7 compliance reports in 24 hours.
European supervisors (EBA, ESMA, BaFin, KNF) and global regulators are actively auditing enterprises and regulated companies for legacy ICT risk and operational resilience. If you have legacy code in production without deterministic documentation, you face critical compliance exposure.
Zero friction. 100% Air-Gapped offline activation tokens. Download standalone Rust binaries and purchase directly with corporate card or US ACH.
For individual developers running local JCL & COBOL health checks.
For Independent Advisors, AI Engineers, Principal Leads & Migration Consultants.
For Consulting Teams, Systems Integrators, and Software Houses.
Perpetual on-premise node licenses for coboliq enterprise CLI @ MCP discovery daemon (15-min deterministic AST & DORA compliance), rapidcobol 6x4 parallel batch engine (35M+ rec/s with AbendGuard), and unlimited domain ARR ($24,900/yr). US W-9 / ACH / Fedwire available.
Schedule an engineering walk-through or request an offline CLI @ MCP trial. Zero sales fluff — pure deterministic AST analysis on your dialect.
Direct contact: contact@coboliq.com · Direct engineering response within 24 hours