I would like to create a chat with a curl api linked to my database

Hello I have a content generation saas application, with the application I have a dashboard that allows me to put a price on what I buy, the saas mainly uses the open ai api to work
nevertheless I have developed a content generation solution that works with a curl api which I want to implement in the chat part of the saas

The saas is coded in laravel and is connected to the database to count and subtract the number of words used