Sponsorship is pay-as-you-go: your users’ fees are sponsored as they happen, and Rhinestone invoices your organization once a month for what it used, charged automatically to a card you save in the dashboard.
Billing is organization-wide — every project in your organization shares one card, one invoice, and one usage limit. Everything lives in the Dashboard under Settings → Sponsorship.
Saving a card
Owners and admins press Save card, enter their card details in the hosted Stripe form, and submit. Submitting authorizes Rhinestone to charge that card automatically once a month for that month’s sponsorship usage — there is no separate consent step.
The card shows as Ready once the setup is confirmed. If the confirmation is still settling, the panel says the card was submitted and setup is processing, with a Check again action.
Other roles see the card state read-only.
Invoices and payment history
Your organization gets one invoice per calendar month. Press Manage to open the billing portal in a new tab, where you can download past invoices and update the card on file.
Every organization admin is emailed when an invoice is ready, and when a payment needs attention — a failed charge, or a bank asking to authenticate the payment.
Accrued usage this period
The Accrued sponsorship usage panel shows gross usage for the current billing period, labeled with the period’s dates, broken down into Sponsored gas, Bridge fees, Swap fees, Protocol fees and Other sponsored costs.
Gross usage is informational, not an estimate of the final invoice amount: prepaid balance and credits are applied when the invoice closes.
Monthly usage limit
The Monthly usage limit panel is an optional organization-wide hard cap on sponsored spend for the UTC calendar month — a different window from the billing period above. It shows month-to-date spend, the limit, and remaining headroom; both read Unlimited when no limit is set.
Owners and admins press Edit to set, change, or unset the limit.
The cap is hard, not advisory. Setting a limit at or below current month-to-date spend makes subsequent sponsored work refuse immediately — your users then pay their own fees, so their intents keep working.
Limit alerts
When a limit is set, Rhinestone emails your organization admins at 90%, 95%, and 99% of it, once per threshold per calendar month. No limit means no alerts.
Prepaid balance and credits
If your organization still holds a prepaid balance or credits, they appear as Available balance and Credit balance and are consumed before anything becomes billable. An invoice only charges what they didn’t cover.
Testnets
Testnet sponsorship is free and unmetered: it doesn’t accrue usage and doesn’t count against the monthly limit. You don’t need a card to try sponsorship on testnets.
Per-project limits vs the monthly cap
The Sponsorship limits panel on the same page is unrelated: it caps per-intent spend for the selected project, on mainnet only. The monthly usage limit caps total sponsored spend across the whole organization for the calendar month.
See Gas & fee sponsorship for what sponsorship covers and how to enable it in code. 
