API integrate

I have register as seller to 4 different platforms (others ecommerce), and also I have my own woocommerce website. Since i have 5 different place to sell similiar product including my own website, so it is hard for me to manually update similiar product to this different platforms. Therefore, I looking for someone to help in intergrate all these 4 platform to my woocommence website using API. I already have approval to access their API. Our objective: 1. When we upload new product/updating product or delete product at my website, all my store in other platform will receive similiar update. 2. We want every order coming from any of this 4 platform, seller in my website will receive the order details. The seller also can update shipping information at my site and it will auto update to related website where the order came. 3. if a chat coming from buyer for a product, the seller who listing the product at my website will receive the chat too. (optional)