Allowing an AI to see the calendar

In organizing my life I use one calendar because it allows me to see all of my work and personal appointments for both myself and my family in one place. What would be really helpful is if there were a way for an AI (I use both Claude and ChatGPT) to see what is in One Calendar because that's where all of the information is collected in one place. Claude has told me that it can't see what is in one calendar, and so I was wondering if there was some way to give it permission to see what is in my one calendar. Thanks!