How to track API usage and cost with each APIs from dashboard？

Hey, ran into the same wall. I’m a CS student building a small tool that tags each API call by feature/workflow so you get a breakdown like “support chat: $340, content gen: $40” instead of one global number, plus an alert before you blow a budget. Before I build more of it, genuinely want to know: for a team-spend problem like yours, would something like that actually solve it, or is there a wrinkle I’m not seeing (multiple billing accounts, needing it per-person not per-feature, something else)? And would $15-20/month per team be reasonable for that, or is this the kind of thing a team expects to get free from OpenAI directly? No pitch, trying to get this right before I write code.