How it works
- Confirm wallet balance can cover amount + funding fee (Card Fee Quote).
- POST the fund amount with the target
card_id. - Card balance updates on the card object; use Get a Card to read the current balance.
When to use
- Top up a card after the initial prefund
- Replenish spend limits for recurring customers
- Move float from your business wallet to card programs
API Reference
Full request/response details and Try it