The first article on this blog explained how it was built in 30 minutes with Claude Code. Naturally, a blog needs comments. Same constraints: no database, no external dependencies, no Disqus tracking visitors. Just PHP + JSON files. Built in one session with Claude Code — the interesting part wasn't the code, it was the security audit that followed. A comment system without a database seems trivia
When building applications with large language models (LLMs), one of the most overlooked costs is how structured data is represented. Most systems use JSON. And JSON is inefficient for LLM input. KODA (Knowledge-Oriented Data Abstraction) is a schema-first data format designed to reduce token usage when sending structured data to LLMs. It works by: Defining structure once (schema-first) Encoding v
I'm a fullstack web developer with 6 years of experience. Python, Rust, JS, databases, and APIs. That's my day job. I had never touched electronics. A few weeks ago, I decided to build CyberKey. The itch came from something boring at work: my VPN disconnects when I lock my computer, and I have to type a TOTP code several times a day. Unlock my phone, open the authenticator app, read the code, type