Secure payment flow using an LLM agent with a single use access token and an on-device wallet

A secure payment system comprising:

• a processor;
• and
• a memory storing instructions that upon execution by the processor perform operations comprising:
• receiving from a user, by a large language model (LLM) custom agent on a user device, a request to book a travel itinerary comprising a plurality of bookings;
• performing a secure payment for the travel itinerary comprising the plurality of bookings by at least:
• upon receiving the request, prompting, using a payment application programming interface (API), the user to authorize a one-time access token for the LLM custom agent to access a digital wallet and receive therefrom a single-use payment token, wherein the digital wallet is on the user device and associated with the user;
• receiving, by the LLM custom agent, the one-time access token for the digital wallet generated using the payment API;
• providing, upon receiving the one-time access token and in a user interface of the LLM custom agent, the travel itinerary comprising the plurality of bookings obtained from a travel service provider;
• receiving, by the LLM custom agent, a confirmation from the user to book the provided travel itinerary;
• and
• booking, in response to said confirmation and by the LLM custom agent using the one-time access token, the provided travel itinerary comprising the plurality of bookings with the travel service provider, wherein no personal preference information of the user is shared with the travel service provider.

A computer storage medium storing instructions that, upon execution by a processor, perform a secure payment method comprising:

• receiving from a user, by a large language model (LLM) custom agent on a user device and via a conversational agent from a user, a request to book a travel itinerary comprising a plurality of bookings;
• performing a secure payment for the travel itinerary comprising the plurality of bookings by at least:
• upon receiving the request, prompting, using a payment application programming interface (API), the user to authorize a one-time access token for the LLM custom agent to access a digital wallet and receive therefrom a single-use payment token, wherein the digital wallet is on the user device and associated with the user;
• receiving, by the LLM custom agent, the one-time access token for the digital wallet generated using the payment API;
• upon receiving the one-time access token, providing, in a user interface of the conversational agent, the travel itinerary comprising the plurality of bookings obtained from a travel service provider;
• receiving, by the LLM custom agent, a confirmation from the user to book the provided travel itinerary;
• and
• booking, in response to said confirmation and by the LLM custom agent using the one-time access token, the provided travel itinerary comprising the plurality of bookings with the travel service provider, wherein no personal preference information of the user is shared with the travel service provider.