title: Internal Account Type type: string enum: - INTERNAL_FIAT - INTERNAL_CRYPTO - EMBEDDED_WALLET description: >- Classification of an internal account. - `INTERNAL_FIAT`: A Grid-managed fiat holding account (for example, the USD holding account used as the source for Payouts flows). - `INTERNAL_CRYPTO`: A Grid-managed crypto holding account denominated in a stablecoin such as USDC. - `EMBEDDED_WALLET`: A self-custodial Embedded Wallet provisioned for the customer. Outbound transfers require a session signature produced by the customer's device — see the Embedded Wallets guide.