Vector storages made via OpenAi's website versus via code locally

I have created a vector store via OpenAI’s website. Originally I used these vector storages in Playgrounds for an Assistant I’m creating. Now that I got everything tuned right via Playgrounds I want to use the Assistants API to implement that Assistant into an application. My question is, as I’m writing the code for the application as per the documentation, do I have to create the vector storages again or can I use the ID’s found on In other words, do I have to do anything with the files I’ve uploaded to OpenAI already when writing the code or can I use information from the vector store on the website to access that via my assistants code (Using the file search tool).

Apologies if the answer is obvious, I am reasonably new to this topic and am working through the documentation the best I can.