I built Claude Code Agent Monitoring & Observability on VSCode

I built Argus after repeatedly getting frustrated with how opaque Claude Code sessions were—there was no clear way to understand why a session cost more, looped, or behaved unexpectedly, so I designed a lightweight VSCode extension that parses the local .claude session logs and turns them into a visual, step-by-step “time machine debugger,” showing tool calls, token usage, retry loops, and file interactions in a way that’s actually explorable; the core idea was to bring observability (something we take for granted in backend systems) into AI coding workflows, so I built it using a simple TypeScript + React stack with a focus on fast local analysis, heuristic-based insights, and zero external dependencies, iterating quickly by analyzing my own sessions and discovering patterns like repeated file reads and costly retry loops, which ultimately shaped the product into both a debugging and cost-visibility tool for developers using Claude Code.

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

#claude #claude-code #open-source #ai #agents #productivity