What the Vault is
Every wallet has awalletType of standard or vault. A standard wallet is the everyday, spendable one. The Vault is the locked-down reserve.
List your wallets with GET /wallets to see the field. The Vault sits alongside your standard wallets, set apart only by its walletType.
How the Vault differs
The Vault behaves differently from a standard wallet in three ways. 1. You cannot create one through the API. The Vault is provisioned once after onboarding. 2. Agents cannot be attached to Vault or move money out of it. Agents can still fund the Vault by transferring in from a standard wallet. 3. It cannot be your default wallet. Keep a standard wallet as your default so calls that omitwalletId resolve somewhere spendable.