Routavo
Pay once with a card or Link. You get a key back; every API call an agent makes with it is metered off the balance, and failed calls cost nothing.
Card top-ups are not turned on here. This server takes USDC deposits and x402 authorizations only. The operator turns cards on by setting a Stripe key.
Already have a key? Send it as Authorization: Bearer rw_... or open /topup?wkey=rw_... to add to that balance instead.