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Connect to https://mcp.agentcard.sh/mcp with the user’s connection token (or a buy_token for org-owned accounts). Behavior: idempotent.

What it does

The user’s cash balance: the money that funds new cards. Provisions the balance account on first use. Users add cash with Apple Pay or Google Pay in USD; funds are held as USDC. (Their wallet, meaning the cards themselves, is list_cards.)

Inputs

None.

Returns

Example call