Mr. Usage › Vast.ai

Check your Vast.ai balance

Mr. Usage reads Vast.ai's documented usage endpoint with your own key and keeps a card refreshed on its own. Main number: prepaid balance in dollars. A negative balance shows as zero left, with the amount owed in the details.

Install Mr. Usage GitHub repository

What the Vast.ai card shows

Main number: prepaid balance in dollars. A negative balance shows as zero left, with the amount owed in the details. A yellow "Low" badge appears under 20% left and a red "Nearly out" badge under 5%, with a line of today's readings underneath.

Shows the account's prepaid balance. Vast.ai does not report a limit or a renewal date.

What Mr. Usage reads

Call`GET https://console.vast.ai/api/v0/users/current`
Authentication
Verified againsthttps://docs.vast.ai/api-reference/accounts/show-user
Anything else contactedNothing. The host is on a per-provider allowlist checked before every request, redirects are off, and the connection is TLS 1.2 or newer.

The app shows you this exact address before you save a key, and docs/SOURCES.md records where each fact came from and when it was read.

Questions

Does checking my Vast.ai usage cost credits?

the page states no price; the call reads the account record and rents nothing.

Where does my Vast.ai API key go?

Into your operating system's credential store, under the service name mr-usage: Keychain on macOS, Credential Manager on Windows, the Secret Service on Linux. The app reads it at the moment it calls the vendor, wraps it in a zeroizing type, and drops it. It is never written to a file of the app's own and never sent back to the window.

How often is the card refreshed?

Every 5 minutes by default. Settings lets you pick anything from 1 minute to 24 hours, and changing the interval takes effect from the last poll. There is also a Refresh button on each card, limited to once a minute.

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