TokenTracker

TokenTracker is a cross-platform desktop application that monitors AI provider quotas, rate limits, and spend statistics in real-time.

Features

• Multi-Provider Support — Monitor Anthropic, OpenAI, OpenRouter, Groq, Ollama, and more
• Real-Time Quota Tracking — Live usage and rate limit data with configurable polling
• Cost Analytics — Per-provider and aggregate spend breakdowns with model-level detail
• Secure Credential Storage — API keys and browser cookie import
• Browser Profile Import — Pull authentication cookies from Chrome, Firefox, and Edge profiles
• Dark / Light Themes — macOS-inspired glassmorphic UI with smooth transitions
• System Tray — Runs quietly in the background; click to show/hide
• Cross-Platform — Linux, Windows, and macOS via Tauri 2

Tech Stack

• Frontend — Next.js 16 (App Router), React 19, TypeScript, Tailwind CSS 4
• Backend — Rust (Axum HTTP API server running as a bundled subprocess)
• Desktop Runtime — Tauri 2 (system tray, window management, process lifecycle)

Architecture

Frontend (Tauri/Next.js)
→ HTTP (localhost) → Rust Backend (Axum API, port 46727)
→ useProviders hook manages all state
→ mapProviderUsage / mapProviderCost transform raw JSON → typed objects

Key Files

Path	Purpose
backend/src/main.rs	Rust HTTP server entry point (Axum router)
backend/src/server/	Request handlers for all API endpoints
src-tauri/src/lib.rs	Tauri app lifecycle, tray icon, window management
src-tauri/src/backend.rs	Backend process spawning, health check, lifecycle
src/lib/apiClient.ts	Frontend HTTP client (fetches port dynamically from Tauri)
src/hooks/useProviders.ts	Central hook owning all provider/cost/settings state
src/lib/dataMapping.ts	Raw JSON → typed object transformers + provider descriptors

Getting Started

Prerequisites

• Rust 1.85+ (Edition 2024)
• Node.js 20+

Development

# Install frontend dependencies
npm install
# Run the full Tauri app (frontend + bundled backend, hot-reload)
npm run tauri:dev

The backend HTTP server starts automatically. The frontend connects via a port dynamically reported by Tauri (default 46727).

Production Build

npm run tauri:build

Outputs native installers for your platform (AppImage, .deb, .msi, etc.).

Running Tests

# Terminal 1 — start the dev server
npm run dev
# Terminal 2 — run smoke tests
npm run test:smoke

Environment Variables

Variable	Default	Description
TOKEN_TRACKER_BACKEND_PORT	46727	Port for the bundled Rust backend HTTP server

Local Caching

Usage and cost data is cached locally for offline reading and fast startup:

• Linux — ~/.config/CodexBar/cache.json
• Windows — %USERPROFILE%\.config\CodexBar\cache.json

License

MIT License — see LICENSE for full terms.