UsageBarRust

UsageBarRust is a system-tray application for Windows that displays LLM and API usage/balance information. Originally ported from C#: https://github.com/bariskisir/UsageBar

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Supported LLMs and APIs

• Codex OAuth
• Claude OAuth
• DeepSeek API
• OpenRouter API
• Deepgram API
• New providers will be added soon.

Install

1. Download the latest release for your platform from Releases.
2. Install or extract the package.
3. Run UsageBarRust.

Configuration

Option - 1

C:\Users\USERNAME\AppData\Roaming\UsageBarRust\settings.json

{
  "refreshPeriodMinute": 5,
  "useLegacyTooltip": false,
  "highPercentage": 70,
  "criticalPercentage": 90,
  "DEEPSEEK_API_KEY": "",
  "OPENROUTER_API_KEY": "",
  "DEEPGRAM_API_KEY": ""
}

Option - 2

[System.Environment]::SetEnvironmentVariable("DEEPSEEK_API_KEY", "API_KEY", "User")
[System.Environment]::SetEnvironmentVariable("OPENROUTER_API_KEY", "API_KEY", "User")
[System.Environment]::SetEnvironmentVariable("DEEPGRAM_API_KEY", "API_KEY", "User")

Providers with blank or missing API keys will not be enabled

Notifications

When usage climbs above the configured thresholds, a Windows toast notification is shown:

• High usage — usage crosses highPercentage (default 70 %) upward.
• Critical usage — usage crosses criticalPercentage (default 90 %) upward.
• Limit reset — when usage drops back below the threshold, the tracking state resets so a fresh notification can fire on the next upward crossing.

Each threshold fires only once per cycle (no repeat spam). The thresholds can be changed from the tray icon's right-click menu (High Level / Critical Level) or by editing settings.json.

Development

git clone https://github.com/bariskisir/usagebarrust.git
cd usagebarrust
cargo build --release

License

MIT