US Patent 10509779 Self-cleaning token vault

Embodiments are directed to a self-cleaning token vault for managing tokens generated on behalf of a resource provider. The generated tokens may be stored at the token vault. Embodiments provide a token manager (which can be embodied in the token vault or provided as a separate module) that continuously monitor the token vault for expired or redundant tokens. The token manager may enable the resource provider to assign level flags to the tokens and assign level values to the level flags. The level value may indicate an importance or a use characteristic of the token. Upon identifying tokens that are no longer necessary, the self-cleaning token vault or the token manager may automatically remove the tokens from the token vault.