Pay for several model APIs out of your own pocket and your spend lives in a different console for each one. Spender reads it straight from OpenAI, Anthropic, DeepSeek, xAI and the rest — no account, no backend, keys in the macOS Keychain.
Where the number came from
A cost figure returned by the provider's own billing API. OpenAI, Anthropic and xAI report cost; OpenAI and Anthropic add tokens and a model breakdown, xAI adds models. Cost — not balance.
Derived, and labelled as such. DeepSeek publishes no cost history, so Spender computes spend from saved balance decreases — and says so on the card.
No report, no number. A metric a provider does not expose is left blank — never rounded down to $0.00.
No provider reports a remaining balance for OpenAI or Anthropic. You enter it once from Billing, and Spender deducts official spend from your number — not its own guess.
A typical spend dashboard
Total spend
$78.21
One confident figure. No way to tell which part a provider actually reported, which part was inferred, and which provider said nothing at all.
Spender
The same total, taken apart. $71.64 came from OpenAI and Anthropic billing APIs. $6.57 is DeepSeek, derived from balance decreases because DeepSeek publishes no cost history — and it never joins the official figure.
Every dashboard promises one clean total. To print it, they have to invent the parts nobody reports.
Spender refuses. Where the number is derived it says estimated, shows the method in one line, and keeps it out of the official total. You are the kind of person who knows the difference between a zero and a missing value. So is your spend tracker.
Per-provider totals carry their own badge, so a month's spend never blends official reports with estimates behind a single figure.
The daily chart is drawn from the same buckets — no smoothing, no backfill of days a provider never reported.
Billing APIs differ wildly. Rather than paper over that, Spender is explicit about what it can read from each connection.
Cost, tokens and model breakdown
Cost, tokens and model breakdown
Balance, plus spend derived from balance decreases
Prepaid balance, usage and model breakdown
Balance only
Key validation; balance and billing only with read-only BSS credentials
Remaining monthly spending limit
Remaining credits
Gemini and Perplexity are hidden on purpose: an ordinary API key gives no account-wide spend report, and key validation is not billing integration.
Three of the fourteen states a card can report
The latest provider data is available.
The provider returned only part of the requested report.
Connect this provider to load its available metrics.
Wording taken from the app itself — these are the strings a card actually shows.
A fixed 420x640 panel that drops out of the menu bar — not a browser in a window. Launches at login, refreshes in the background, and retains the last good snapshot rather than blanking the card.
There is no Spender server to sign up for and no credential proxy in the middle. The only requests it makes are to the provider APIs you connected yourself, restricted to declared HTTPS origins.
An OpenAI Organization Admin key, an Anthropic Console Admin key, a team-scoped xAI Management key — the narrowest read-only credential each provider supports, held in the macOS Keychain. Never your inference keys.