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Fund a card from your USD card wallet. The wallet is debited first; the card’s balance reflects the top-up on success.
Card endpoints use the same base URL and API key as the rest of the API, and are signature-gated: send X-Numero-Signature and X-Numero-Signature-Version: v2 as well. See Request signing.

Endpoint

Signature required: Yes

Headers

Path parameters

Request body

Request example

Response