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YesClaude · 21 Feb 2026

I used Claude to document, in great detail, a 500k-line codebase in about an hour of well-directed prompts

jv22222 on Hacker News

500k-line codebase in about an hour

In the thread “I Don't Like Magic”, replying to this comment

Helped: Well-directed prompts for detailed documentation of complex legacy code.

I used Claude to document, in great detail, a 500k-line codebase in about an hour of well-directed prompts. Just fully explained it, how it all worked, how to get started working on it locally, the nuance of the old code, pathways, deployments using salt-stack to AWS, etc. …