Cost Doctor

Cost Doctor is a native Mac menu bar app for people who use Claude Code or Codex.

It reads the session logs on your Mac (~/.claude and ~/.codex) and shows today's token total, a seven-day chart, and a list of today's sessions ranked by use. For each session it shows the tool, the project, turns, current size per turn, where the session started, and the share used by subagents. When a session is carrying a lot of history, starts with a large tool list, or spends heavily on subagents, it says so in plain language.

It also watches for work that has failed and is waiting on you: failed checks on open pull requests (through the GitHub command line tool), a session that stopped on a failure and has sat idle, or a one-line alert file you or a script drop in ~/.costdoctor/alerts/. When that happens, the menu bar badge turns red, an optional red frame appears around every screen (it does not block clicks), and a notification can be sent.

The app does not call a model, does not change a session, and does not upload your prompts, code, or usage. There is no account. A licence is a key you paste once and it is checked on your Mac, offline.

It needs macOS 13 or later, and Claude Code or Codex installed. Pull request alerts also need the GitHub command line tool (gh), signed in.

Price: US$19 once, plus tax where it applies. No subscription. 14-day free trial with everything switched on.