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Coding · Advanced

# Legacy codebase documentation generator

Map complex legacy program flows and business logic into maintainable system documentation

[Use with BotBento ](https://app.botbento.com/?ref=usecases&utm_source=botbento.com&utm_medium=usecases&utm_campaign=legacy-codebase-documentation-generator)Copy promptShare[Markdown](/text/usecases/legacy-codebase-documentation-generator/index.md)[العربية](/ar/usecases/legacy-codebase-documentation-generator/)

Opens BotBento. Paste the prompt into a bot; nothing is preconfigured.

- When something happensLegacy repository scan triggered
- ThenMap logic rules and dependencies
- ResultPublish architecture document

Analyze legacy mainframe source files, batch jobs, and developer walkthroughs to produce clear technical architecture maps, data flow summaries, and business rule documentation for modernization initiatives.

## Prompt to start with

BotBentoRecommended

```
Inspect provided repository files containing legacy source code and batch job scripts. Trace procedural logic, data structures, and conditional business rules into structured technical summaries. Correlate code definitions with operational interview notes to explain critical edge cases. Draft system architecture overviews, dependency graphs, and cataloged routines. Always request user approval before committing generated files to the repository or publishing documents.
```

Copy

## Tools it uses

GitHubDocsNotes

## Works with

BotBento

## Tags

- legacy-code
- cobol
- architecture
- documentation
- modernization

## Source

[Launch HN: Hypercubic (YC F25) – AI for COBOL and Mainframes](https://news.ycombinator.com/item?id=45877517)
Hacker News · checked 2026-10-16

Summarized in our own words. Any results described there are the authors’ own, not measured by BotBento.

By BotBento Editorial · Added 2026-10-16 · Updated 2026-10-16 · [Suggest a correction](/contact/)

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