When I started using Claude Code, Codex, and Cursor more seriously, I thought AI coding usage was mostly an accounting problem.
How many tokens did I use?
How much did the session cost?
Which tool burned the most?
That is useful after the fact, but it is the wrong moment for the decision.
The expensive part usually happens while I am still in the flow.
A bug fix turns into a refactor. The refactor turns into a cleanup pass. The cleanup pass turns into one more attempt because the model feels close. By the time I check a dashboard, the session is already committed.
That changed the product shape I wanted.
Usage needs to be visible before the regret
For AI coding tools, a receipt is too late.
The useful signal is closer to a fuel gauge:
- how much of this session is already gone
- whether the current task is worth continuing
- when I should split the work into a smaller prompt
- when I should stop asking the model to explore
- when a reset window is about to matter
None of that needs a giant dashboard. In fact, a giant dashboard can make the behavior worse because it becomes something I only check after the session.
The better pattern is boring: put the usage signal where the work is happening.
Why I like the menu bar for this
I have been building TokenBar as a small Mac menu bar app for this reason.
The goal is not to make AI usage analytics feel fancy. The goal is to make usage hard to ignore while I am coding.
A tiny always-visible number changes the loop. It makes me ask:
- is this prompt too broad?
- am I asking for a rewrite when I need a narrow fix?
- should I start a new task instead of dragging this context forward?
- is this another retry loop?
Those are small decisions, but they compound across a day of AI-assisted development.
The product lesson
The best developer tools do not only show information. They show it at the moment when it can still change behavior.
For AI coding usage, that moment is not the invoice, the billing page, or the end-of-day dashboard.
It is right before the next prompt.
That is the idea behind TokenBar: a lightweight Mac menu bar way to keep Claude Code, Codex, Cursor, and other AI coding usage visible while you work.
It is free to try here: https://tokenbar.site/
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