Matt Herzog | Matt Herzog's Newsletter

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Matt Herzog

Building an AI Fantasy Assistant: Reverse Engineering ESPN's API

Oct 14, 2025

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9 min read

Building an AI Fantasy Assistant: Reverse Engineering ESPN's API

A guide to get any data you want

Learning Log: When My AI Judge Couldn't Count to Two

Oct 5, 2025

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7 min read

Learning Log: When My AI Judge Couldn't Count to Two

Documenting what I'm learning building an email optimization system

Learning in Public: Building My First AI Coding Agent

Sep 28, 2025

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4 min read

Learning in Public: Building My First AI Coding Agent

What I learned building an AI coding agent

Math

I Spent 52 Days on Math Academy—Here's What I Learned

Aug 25, 2025

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5 min read

I Spent 52 Days on Math Academy—Here's What I Learned

I wasn't bad at math after all

Matt Herzog