— Start something new

Upload COBOL. Choose what to make.

Conversion runs the five-pass Kairos-1 pipeline. Documentation generates a 23-page BPD. Pick one — or run both against the same source.

Upload source

.cob · .cbl · .cpy · .jcl up to 50 MB. Files are scanned locally for dialect, COPYBOOK graph, DB2, CICS, MQ, and JCL bindings.

No files

Drop COBOL files here

or browse from your computer · paste with ⌘V

IBM Enterprise · Micro Focus · GNU · AcuCOBOL·≤ 50 MB per upload

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Choose output

Conversion and BPD generation share the upload, the audit trail, and one downloadable bundle.

5-pass pipeline

Convert

Kairos-1 multi-pass conversion to Python, Java, or Node.js. Side-by-side diff and downloadable source at the end.

~ 38 min · ~ $84

23-page document

Document

Business Process Document with exec summary, data dictionary, integration map, error matrix, Mermaid workflow.

~ 4 min · ~ $6

Recommended — both

Convert & document

Conversion + BPD against the same source. One bundle, one audit trail, one cutover packet.

~ 42 min · ~ $90

✓

Configure

Defaults match the Northbay delivery standard. Override anything; changes apply only to this job.

Target language

Python for analytics workloads; Java for JVM platforms; Node.js for API-fronted services.

.py

Python 3.11

dataclasses · Decimal · pytest

.java

Java 21 LTS

records · BigDecimal · JUnit

.ts

Node.js 20

TypeScript · big.js · vitest

Code style

Conservative preserves COBOL shape; idiomatic refactors into native patterns.

Confidence threshold

Modules at or above this score ship automatically with proofs attached. Below routes to a reviewer.

99.0%

90959899100

reject < 95 review 95–99 ship ≥ 99

Verification stack

Proofs attached before any module is declared shippable.

✓Z3 theorem proof∀ inputs✓AST diff vs. KIR412 rules✓Property fuzz envelope8,192 casesShadow run vs. mainframepilot only

BPD document

Length and output files for the documentation track.

✓PDFsigned✓DOCXeditablePlain text.txt✓Mermaid diagram.mmd · .svg