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Checks the available balance for one card. Prefer this over get_card_details when you only need to verify funds; it is faster and never exposes card credentials.

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Parameters

ParameterTypeRequiredDescription
card_idstringYesThe card ID

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Returns

A short balance summary plus balanceCents and balanceDollars. A cached flag tells you when the number came from a short-lived cache rather than a live fetch.

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Example

{ "name": "check_balance", "arguments": { "card_id": "card_abc123" } }