Argus - Claude Code Debugger & Analyzer

Hey Product Hunt! 👋

I've been using Claude Code daily for months, and while it's incredible, I kept running into the same frustration: I had no idea what was actually happening during sessions. Why did that refactoring cost $12? Why did it take 15 minutes? Is Claude reading the same config file over and over? The answers were technically there—buried in .jsonl log files that I'd never realistically parse by hand. So I built Argus, a VSCode extension that just... reads those files and makes sense of them.

It's nothing fancy. Argus sits in your VSCode sidebar, automatically finds all your Claude sessions, and when you click one, it shows you what happened: which files were read (and how many times), how much each step cost in tokens, where errors popped up, which operations took forever. There's a dependency graph showing file relationships, a cost breakdown, some simple checks for obvious inefficiencies like duplicate reads or retry loops. It runs locally, it's MIT licensed, and honestly, I just made it because I wanted to understand my own sessions better. If you use Claude Code and you've ever wondered "wait, what just happened?", this might be useful to you too.

Github: https://github.com/yessGlory17/argus

VSCode Marketplace: https://marketplace.visualstudio.com/items?itemName=argus-claude.argus-claude