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    AI Underwriting - Income Focused Underwriting Tool

    AI Underwriting - Income Focused Underwriting Tool

    Category
    Lending
    Date
    January 10, 2026
    Featured
    Files & media
    Summary

    I built an underwriting tool using AI - Claude. Trained off historical loan performance and loss analysis.

    URL
    https://jragsdale-cu.github.io/AI-Built-Underwriting-Tool/

    I built an underwriting tool using AI - Claude

    trained off historical loan performance and loss analysis

    but the primary decision factor is income performance after loan loss

    what did the loan, and others that looked like it, actually produce, even when it went bad

    Trying to figure out the real use case

    training for underwriters so they can see patterns from past loan loss and past income generation?

    thought guiding while you underwrite, pulling up similar profiles and outcomes?

    first net catch on applications to save time before deep diving?

    Main thing I keep coming back to

    how do we see past the ratios with a tool

    DTI, score, all the usual stuff, useful but it hides the story

    LSCI, “see what no one else sees”

    how do you build that without making it a black box - or is this better because it is real performance? I have a hard time accepting that, but worth thinking about

    I built in score codes

    prompts that force one step further

    what to look at next

    why this file is different than it looks

    where the risk actually shows up

    where the opportunity hides too

    Still early

    still testing it against old deals and comparing to current loans being underwritten to see where it differs from underwriting decisions

    still letting it evolve

    Let’s see where it goes