tags: #help #billing #payments #credits
description: Billing in AI Putty: your plan and add-ons, d2 credits for AI agents that run on d2's key, automatic top-up, and what your agents spent.
brief: Billing is one page for your plan, its add-ons, your d2 credits and what your agents spent. Card, invoices and cancelling open Stripe's secure portal.

Billing: your plan, credits and AI spend¶✎ edit

Billing is one page for everything you pay for: this month's price, your plan, its add-ons, your d2 credits, and what your AI agents spent. Old links to Your plan and Credits land here too.

Your card, your invoices and cancelling open Stripe's secure portal. AI Putty never sees your card number.

Your plan and add-ons¶✎ edit

This month's price at the top is your plan plus the add-ons you have.
Plan: Get a plan, Upgrade, Switch down, or Manage it (card, invoices, cancel) in Stripe.
Add-ons: add one, or stop one you no longer need.

d2 credits¶✎ edit

Your AI agents can run on your own AI key or on d2's. The ones on d2's key spend d2 credits: an agent uses them only when its row on the Agents page says Pay by: d2 credits.

Buy credits: $10, $25 or $50, paid by card through Stripe. The card is kept for top-ups.
Automatic top-up: when my balance reaches $X, reload $Y. Save it, or turn it off. If a reload is refused, top-up turns off and you get a notice.
History: your loads, reloads and grants.

What your agents spent¶✎ edit

Spend lists every charged run of the last 30 days, by day or by agent, with the model each used. Test runs are kept apart, so you can see what building cost and what testing cost.

Good to know¶✎ edit

Can my AI read or change billing? No. Credits and payments work only in your own signed-in session: an AI token can't read or change them. See Security.
Where do I see one agent's cost? On its row on the Agents page.
Related: Settings, Working with AI agents, Support.