Sandbox mode for testing
- AddedAdded sandbox API keys, so you can test your integration without spending real funds or waiting on the blockchain.
- AddedAdded a way to manually resolve a test invoice to any outcome (paid, underpaid, expired, canceled) to exercise your webhook handling.
More reliable payments and webhooks
- ChangedPayment detection now recovers more gracefully from temporary infrastructure disruptions.
- ChangedWebhook delivery is more resilient during transient outages.
Simpler invoice fees
- ChangedReplaced the old credit-based billing model with a straightforward percentage fee per invoice — see /pricing for current rates.
- AddedCanceled or expired invoices are now automatically refunded down to a lower rate.
Multiple payout wallets
- AddedMerchants can now save and manage multiple GRAM wallets under one account.