How to build an AI Agent to create expenses for users

Summary:

With the introduction of the AI studio we would like to use this feature to create an agent that will create expenses on behalf of users. There seems to be no tools in the studio yet to allow this. Am I missing something?

Content (please ensure you mask any confidential information):

In an ideal world we would have a chat bot in which users can submit expenses through, this should be able to be done via text or a photograph of the receipt.

Version (include the version you are using, if applicable):

Oracle Fusion 25c

Code Snippet (add any code snippets that support your topic, if applicable):