Claude Code bills by token, and if you've been using it heavily, you already know the end-of-month surprise that can bring. A developer named phuryn published an open-source usage dashboard on GitHub - called claude-usage - that pulls your Anthropic API data and turns it into actual charts: costs over time, tokens consumed, and breakdowns you can use to spot patterns in your own usage.
The project runs locally. You connect it to your Anthropic API credentials, and it generates a visual history of what you've spent and when. Anthropic's own usage page gives you raw numbers, but not much to work with if you're trying to understand whether a heavy day of refactoring cost $3 or $30, or how your usage has trended week over week.
This is early-stage work from a single contributor, so expect rough edges. The practical value is real though - for freelancers or small dev teams weighing Claude Code against the alternatives, having clear spend visibility makes the cost-benefit calculation much less abstract.
One note before you run it: inspect the code before pointing it at your API keys. The project is open-source so you can read exactly what it does with your credentials, which is the minimum due diligence for any third-party tool that touches API access. The repository is public on GitHub under phuryn/claude-usage.