I’m Matjaž Domen Pečan — software engineer, open source maintainer, and editor of satirical billionaire diaries. This blog is a mix of technical writing, AI experiments, and occasional sociopolitical observations.
Projects: upsert | pushpin-missing-toolbox
Satire: stfuelon.com | stfujeff.com | stfumark.com
Building a cargo subcommand that detects duplicate Rust code by normalizing ASTs - replacing names with placeholders, erasing literals, and fingerprinting the structural skeleton.
A week of debugging OAuth flows, stateless handlers, and Claude.ai integration issues - ending with a pivot to Claude Code and 33% cost savings.
An experiment in building copy/paste MCPs for AI code refactoring, with tools to benchmark them. Hypothesis: reduce output tokens. Result: not yet.
From a single messy file to multi-agent pipelines and proper engineering. A year of iterating on AI-generated satirical content.
Frustration, a cheap domain, and Claude turned into an AI satire engine with 1197 posts and counting. Here’s how STFU works.