Control tower for linking accounts to applications

A first computing system of a first entity, the first computing system comprising one or more processors configured to:

• serve, to first client application executing on a user device, an internet portal comprising an interactive graphical user interface (GUI) granting control over linking of accounts with client applications other than the first application;
• accept, via the internet portal, a login credential and verify that the login credential grants access to the internet portal;
• present, in the GUI of the internet portal, an application listing identifying a second client application which communicates, when executed on the user device, with a second computing system of a second entity;
• detect, via the application listing in the GUI of the internet portal, selection of the second client application;
• present, in the GUI of the internet portal, a first account listing of one or more accounts with which one or more client applications are linkable, the first account listing identifying a first financial account comprising first account data;
• detect, via the first account listing in the GUI of the internet portal, selection to link the second client application to the first financial account;
• generate a first access token corresponding to the first financial account and transmit the first access token to the second computing system for access to the first account data by the second client application;
• present, in the GUI of the internet portal, a second account listing identifying a second financial account comprising second account data;
• detect, via the second account listing in the GUI of the internet portal, selection to link the second client application to the second financial account;
• generate a second access token corresponding to the second financial account and transmit the second access token to the second computing system for access to the second account data by the second client application;
• receive, from the second computing system, a first API call comprising the first access token and a first request for a subset of the first account data;
• verify the first access token to authenticate the first request, and in response to verifying the first access token, transmit the subset of the first account to the second computing system;
• receive, from the second computing system, a second API call comprising the second access token and a second request for a subset of the second account data;
• verify the second access token to authenticate the second request, and in response to verifying the second access token, transmit the subset of the second account data to the second computing system;
• and
• present, in the GUI of the internet portal, based on at least one of the first request and second request, information on access to at least one of the first financial account or the second financial account by the second client application.

A mobile device comprising a memory storing a first client application of a first entity, a touchscreen display, and a processor configured to:

• present, on the touchscreen display, a home screen comprising an application icon identifying the first client application as being installed on the mobile device;
• detect, via the home screen, using the touchscreen display, selection of the application icon stored in the memory, and in response to detecting selection of the application icon, launch the first client application, wherein the first client application is configured to cause, when executed by the mobile device, the processor to:
• interface with a server of a first computing system to access an internet portal comprising an interactive graphical user interface (GUI) granting control over linking of accounts with client applications;
• detect, via the GUI of the internet portal, a login credential entered by a user to authenticate the user as being authorized to access the internet portal;
• retrieve, via the server, a first account identifier corresponding to a first financial account linked to the first client application, and a second account identifier corresponding to a second financial account linked to the first client application;
• present, in the GUI of the internet portal, on the touchscreen display, an account listing that identifies accounts linked to the first client application, the account listing including the first financial account identifier and the second financial account identifier;
• detect, via the account listing in the GUI of the internet portal, using the touchscreen display, a first input indicating selection of the first financial account;
• present, in the GUI of the internet portal, on the touchscreen display, a first application listing that identifies applications linkable to accounts in the account listing such that account data is accessible to linked applications, the first application listing identifying a second client application installed on the mobile device and configured to access first account data of the first financial account via a second computing system of a second entity;
• detect, via the first application listing in the GUI of the internet portal, using the touchscreen display, a second input indicating selection to link the second client application to the first financial account;
• present, in the GUI of the internet portal, on the touchscreen display, a second application listing that identifies applications linkable to accounts in the account listing such that account data is accessible to linked applications, the second application listing identifying a third client application installed on the mobile device and configured to access second account data of the first financial account via a third computing system of a third entity;
• detect, via the second application listing in the GUI of the internet portal, using the touchscreen display, a third input indicating selection to link the third client application to the first financial account;
• retrieve, via the server, information on at least one of use of the first account data by the second client application or use of the second account data by the third client application;
• and
• present, in the GUI of the internet portal, on the touchscreen display, the retrieved information on at least one of the use of the first account data by the second client application or the use of the second account data by the third client application.