No JavaScript Club

Hey HN! We're Charles and Dean, and we're building Stage: a code review tool that guides you through reading a PR step by step, instead of piecing together a giant diff. Here's a demo video: https://www.tella.tv/video/stage-demo-1pph . You can play around with some example PRs...

I built this based on requirements from my wife, who has been teaching German at a university for over 25 years. She genuinely needed a tool like this for this exact topic and started using it in her teaching right away. The main idea was to make learning as comfortable and fo...

Built this after realizing I was spending ~$1400/week on Claude Code with almost no visibility into what was actually consuming tokens. Tools like ccusage give a cost breakdown per model and per day, but I wanted to understand usage at the task level. CodeBurn reads the JSONL...

I've been studying interval arithmetic for the past few weeks and it's a really interesting field because while there is a ton of super interesting research published over the past decades, it has never really gotten the recognition that it deserves, IMO. One reason for this i...

Four years of my CS degree, typeset in LaTeX (850 pages) is tracked as an emerging product signal.

I built a security game that lets you try to break an AI support agent. I work on security engineering, and it's incredibly hard to try to defend against an attack that you don't know how to perform yourself. There's also next to nowhere to improve your skills. I'd heard all a...