Craig Mod built his own accounting software TaxBot2000 in five days with Claude Code

Software Bonkers

Writer Craig Mod describes a year of obsessive building with Claude Code. He rebuilt a Twitter-like community space with ephemeral posts, then made video search tools and small utilities. Last week he spent five days building TaxBot2000—a local, subscription-free accounting app in Python, Flask, and SQLite. It handles multi-currency, multi-country accounts, pulls daily FX rates, learns categorization habits, and lets him talk to Claude to fix anomalies. He calls it the best accounting software he's ever used, replacing a decade of Quicken and Google Sheets hacks. The post doesn't disclose exact build costs, only that occasional fixes cost a few dollars.

Why it matters: Craig Mod's five-day TaxBot2000 build with Claude Code is a concrete first-person experiment that hits all three HKR axes. Not scored higher because it's a personal productivity tool share, not an industry-level product update or research breakthrough — sits right at the featu...