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TokenBar

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  • License — License: MIT
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  • Active repo — Last push 0 days ago
  • Community trust — 10 GitHub stars
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  • process.env — Environment variable access in landing/astro.config.mjs
  • rm -rf — Recursive force deletion command in package.json
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SUMMARY

AI token usage monitor for the macOS menu bar — tracks 25+ AI coding agents (Claude Code, Codex, Cursor, OpenCode…) from local logs. No telemetry, no account. Tauri 2.

README.md

TokenBar

AI token usage monitor for the macOS menu bar.

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MIT Licence macOS 11+ Apple Silicon Tauri 2


TokenBar is a local-first AI token usage monitor for the macOS menu bar. It sits in the menu bar — no Dock icon, no telemetry, no account — and reads your local AI coding session logs on-device to show what you're spending across 25+ AI coding agents (Claude Code, Codex CLI, Cursor, OpenCode, Gemini CLI, Copilot CLI, Amp, Droid, Hermes, Goose, Kilo/KiloCode, Roo Code, Qwen, Kimi, Crush, Zed, Kiro, Trae, Warp, and more).

TokenBar overview

The menu-bar title is configurable — today's tokens, today's cost, lifetime totals, live tokens/min, or icon-only. And the menu-bar cat spins faster the more tokens you burn — your throughput as a single glanceable critter. The spinning cat is the signature creative touch of the original tokcat by handlecusion, kept here with gratitude.

The menu-bar cat spinning next to today's cost

The dashboard

Clicking the menu-bar icon opens a frosted-glass popover. A row of app tabs
(Overview / Claude / Codex / …) filters which agents you're looking at, and a
view switch picks how that data is broken down — inspired by
tokscale's TUI:

View What it shows
Overview The contribution chart (2D stacked token bars or an interactive 3D GitHub-style year graph), agent limits, the live session trace, the model breakdown, and streaks
Models Every model ranked by cost, with its cost share and a dim In · Out · CR · CW token split
Daily Active days newest-first; select a day to drill into that day's per-model breakdown
Hourly A 24-hour-of-day rhythm — when in the day your tokens are actually spent
Stats The contribution graph over a headline summary: total spend, active days, streaks, favorite model, best day
Agents Sub-agents ranked by cost, with their source apps, message count, and tokens
Models view
Models — by cost		 Daily view
Daily — with day drill-down
Hourly view
Hourly — 24-hour rhythm		 Stats view
Stats — headline summary
Agents view
Agents — sub-agents by cost		 3D contribution graph
3D — GitHub-style year graph

The contribution chart stacks tokens by model (tokscale-style provider
shades) or by agent (brand colors), toggled in the chart header. Agent limit
bars are color-coded by remaining quota and can count up by amount used or
down to what's left (Settings → Agent limits).

TokenBar settings

Install

brew install --cask nanako0129/tokenbar/tokenbar

The fully-qualified owner/tap/cask form auto-taps
nanako0129/homebrew-tokenbar
— no separate brew tap step needed (Homebrew lowercases the tap owner).

Or grab the TokenBar_<version>_aarch64.dmg from Releases.

The in-app updater checks GitHub Releases on launch and every 30 minutes; signed
artifacts are verified against the embedded public key before install.

How it works

TokenBar is a Tauri 2 app: a Rust shell + a React/Vite frontend. All session
parsing, dedup, and cost calculation are delegated to tokscale-core (vendored
under vendor/tokscale-core), so every agent tokscale supports lights up at once,
with mature LiteLLM/OpenRouter pricing. The Rust backend:

  • builds the contribution graph from local logs (usage_graph.rs → tokscale_core::generate_local_graph_report),
  • samples a live tokens/min rate + trace (usage_tail.rs → tokscale_core::parse_local_clients, cache-backed),
  • produces a per-model report (model_report.rs → tokscale_core::get_model_report),
  • produces per-hour and per-agent reports (hourly_report.rs, agents_report.rs),
  • fetches Claude/Codex OAuth rate-limit windows (agent_usage.rs).

Usage history is read locally from session logs on disk. No telemetry, no cloud
sync, no account. Network access is limited to the GitHub Releases updater
manifest and public model-pricing data.

Build from source

Requires Rust (stable) and Node ≥ 22.

npm install
npm run tauri:dev      # run in development
npm run install:local  # release build → /Applications/TokenBar.app

Releases are signed for the in-app updater via TAURI_SIGNING_PRIVATE_KEY
(see tauri signer generate).

Credits & acknowledgements

TokenBar stands on the work of others:

  • tokcat by handlecusion — the
    original macOS menu-bar token monitor that TokenBar is forked from. The Tauri
    shell, native tray, and overall dashboard design originate there — including
    the spinning menu-bar cat that digests your tokens, handlecusion's
    signature creative flourish, which TokenBar proudly keeps.
  • tokscale by Junho Yeo — its
    tokscale-core crate powers TokenBar's multi-agent session parsing,
    deduplication, and pricing. The multi-view dashboard (Models / Daily / Hourly /
    Stats / Agents) is inspired by tokscale's TUI.

Thank you to both projects and their maintainers.

License

MIT. See LICENSE. Original tokcat code © its respective authors,
also under MIT.

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