AI Token Monitor
soulduse/ai-token-monitor
Menu bar and system tray app that prices your AI coding tool usage from local logs, Hermes Agent included
AI Token Monitor is a Rust-based tray app for macOS and Windows that shows what your AI coding tools cost. Hermes Agent is among the tools whose local session logs it reads.
What AI Token Monitor does
AI Token Monitor reads the session logs that tools such as Claude Code, Codex, OpenCode, Gemini CLI, GJC, Grok, Kiro, OmO, Pi and Hermes Agent already write, then prices each token with per-model rates, cache reads included. Today's spend sits next to the clock, and a dashboard adds daily charts, an activity heatmap, model breakdowns and cache efficiency. Live five-hour session and weekly plan bars can warn you before limits, with alerts to Discord, Slack or Telegram.
It works offline by default. The README says the app makes zero network requests unless you opt in to the leaderboard, chat or webhooks, and that only aggregated counts are shared then, never code or conversation content. A Rust engine deduplicates log entries and re-aggregates whenever a file changes. Extras include badges for a GitHub README, a monthly recap card and a receipt-style usage summary. Downloads are a macOS Apple Silicon dmg and a Windows 10+ installer.
Key features
- Reads local session logs from ten tools, including Hermes Agent
- Per-model pricing with cache reads, shown in the menu bar or system tray
- Daily and monthly charts, activity heatmap and model breakdown
- Plan-limit bars with Discord, Slack and Telegram alerts
- Offline by default, with opt-in leaderboard, chat and webhooks
When to use it
- Seeing today's spend across Hermes Agent and other tools in one place
- Getting a webhook alert before a plan limit is reached
- Comparing model cost and cache efficiency over a month
Who it is for: Developers who use several AI coding agents and want a local view of what they cost.
How it fits with Hermes Agent
Hermes Agent is one of ten log sources it reads, so this is a general usage monitor rather than a Hermes-specific tool.
Requirements: macOS on Apple Silicon (dmg) or Windows 10+ (installer; WebView2 is auto-installed).
FAQ
What is AI Token Monitor?
AI Token Monitor is a lightweight system tray app for macOS and Windows that shows how much your AI coding tools cost by reading the session logs they already write locally.
Does AI Token Monitor work with Hermes Agent?
Yes. Hermes Agent is listed among the tools whose local session logs it reads, together with Claude Code, Codex, OpenCode and Gemini CLI.
What do I need to run AI Token Monitor?
You need an Apple Silicon Mac or a Windows 10+ PC, plus at least one supported tool that has written session logs. The README says no API keys or proxies are required.
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Related guides: How to install Hermes Agent