AVI AI Usage Collector

Know what your AI coding assistants cost. AVI AI Usage Collector records the tokens and estimated cost of every model call made by Claude Code, OpenAI Codex and GitHub Copilot. It shows today's spend in the status bar and keeps a searchable audit log. It can also share a monthly summary with your team through a SharePoint or OneDrive folder.

It records numbers only: never prompts, answers, code, file names or repository names.

Features

Today's cost in the status bar. AI $3.42 today, updated a few seconds after each answer. Hover for a breakdown by tool and model (requests, tokens, cost), or click to open the audit log.

Audit log. Every recorded model call, with time, tool, model, input / output / cache / reasoning tokens, Copilot AI credits and estimated cost. Filter by month, tool, model and date range, with totals.

Team sharing through SharePoint, in one click. Your team lead shares an invite link; clicking it joins the team folder. Or paste your team's SharePoint folder link and the extension finds the matching folder that OneDrive syncs to your PC. If the library isn't synced yet, it tells you how to sync it. A monthly summary file is written there, and OneDrive uploads it, so a team lead can combine everyone's usage. No sign-in or API access is needed: the extension only writes to a local folder.

Covers the tools you use:

Works in the background. A small hook in each tool, plus a scheduled task every 30 minutes, keeps collecting even when VS Code is closed. While VS Code is open, new Copilot Chat usage shows up within about a minute.

Windows, Linux and WSL. On WSL the extension runs inside the distro and can still find the Windows OneDrive folders.

Privacy

From each tool's log, only the lines that carry token counts are read, and only these fields are kept:

date and time · tool · model · request count · input / output / reasoning / cache tokens · Copilot AI credits

Never recorded or shared: prompts, AI answers, code, file contents, commands, file or folder paths, repository / branch / commit names, and the email or account you use to sign in to the tools. Session ids are hashed and used only for counting.

The extension makes no network connections, opens no ports, and does not turn on or change any tool's telemetry. Data leaves your PC only as the monthly summary in the shared folder you choose.

Requirements

• VS Code 1.90 or newer.
• Node.js 18 or newer on the PC (22.15+ recommended, to read Codex sessions older than a week). The collector runs as a small Node script, so it also works when VS Code is closed.
• To share with a team: the OneDrive client syncing the team's SharePoint library (Windows), or any folder that is synced to where your team collects the files.

Getting started

With an invite link (one click)

Your team lead shares one link, in Teams or by email. Click it:

1. VS Code opens and asks Join team usage folder "…" as jdoe? Click Join. If the link has no account id, you type yours once.
2. If OneDrive doesn't sync that SharePoint folder on your PC yet, it opens in the browser. Click Sync (or Add shortcut to My files); joining continues by itself when the folder appears.
3. Done: today's usage shows in the status bar.

If clicking the link doesn't open VS Code, run AVI AI Usage: Join Team… and paste the link.

Team leads: run AVI AI Usage: Create Invite Link and paste the SharePoint folder link (from the browser address bar). Leave the account id empty for one link the whole team can use. The link is copied to the clipboard.

Manually

1. Open AVI AI Usage: Setup / Shared Folder, or click AVI AI Usage: set up in the status bar. It also opens on first install.

2. Check that Node.js shows a ✓.

3. Enter your account id: the name your team lead uses for you on the dashboard.

4. Choose the shared folder:

   • paste the SharePoint folder link and click Find on this PC; or
   • pick one of the synced SharePoint / OneDrive folders the page lists; or
   • Browse… to any folder.

   The page checks that the folder exists, that you can write to it, and that it is inside a synced folder.

5. Click Install. The first run picks up the usage history still on disk; use Only usage since to limit it.

Codex users: the next time you open Codex, type /hooks and trust the ai-usage-collector hook.

What it changes on your PC

Nothing is changed until you click Install. No admin rights are needed.

To remove: run AVI AI Usage: Uninstall Collector. It removes the hooks and the scheduled task, and can optionally delete local data. Uninstalling the extension also removes the hooks and the task after VS Code restarts. Files already in the shared folder are kept.

The shared folder

Each PC writes its own subfolder, so several PCs (or a Windows and a WSL install) under one account never collide:

<shared folder>/
  <account>/
    <computer>/
      usage-2026-10.json   one row per day × tool × model: requests, sessions, tokens, credits, estimated cost
      status.json          last run time and which tools were found
  _dist/                   optional: drop a newer .vsix here and installed copies offer to update

Commands

Settings

About the cost figures

Costs are estimates. Claude Code and Codex calls are priced as tokens × the provider's public list price for the model, including cache reads and writes. Copilot uses the AI credits Copilot itself reports ($0.01 each), or premium requests on older plans. If you are on a flat-rate subscription (Claude Pro / Max, ChatGPT plans), the figure shows what the same usage would cost on the API, not what you pay. Unknown models are priced at a default rate.

Troubleshooting