Feature request: self-serve crypto top-up (deposit address or billing API) for sponsorship balance

[JirA44]

Hi Pimlico team,

Currently the only self-serve ways to load sponsorship balance are the dashboard checkout or adding a credit card. The docs say crypto transfers (ETH/USDC) are possible but require contacting you to get a recipient address.

It would be very practical for programmatic/agent-driven workflows to have either:

1. A stable per-account deposit address (e.g. on Base) shown in the dashboard/API, so balance can be topped up by a simple on-chain transfer from any wallet or script, and/or
2. A billing API endpoint to query balance and generate a payment intent (address + amount), so automation can keep the sponsorship balance funded without a human in the dashboard.

Context: we run automated trading/AA infra where the paymaster balance hitting $0 silently stalls UserOperations (oracle callbacks stop being processed). An on-chain top-up path would let our monitoring auto-refill before that happens.

Thanks! Pimlico has been great otherwise.