How to Identify correct URL pattern of SharePoint to get list of items by title from Rest API

Question

My goal is to get all items or files names at this URL

https://myOrganization.sharepoint.com/sites/supplierABC/DataSheet/Forms/AllItems.aspx

I have followed this link and I already have client Id and client secret for the SharePoint URL by using them I am able to generate access token successfully. By using generated access token in Authorization (Postman header), I am trying a get request in Postman with URLs:

https://myOrganization.sharepoint.com/_api/web/lists/getbytitle('test')/items https://myOrganization.sharepoint.com/sites/supplierABC/DataSheet/Forms/AllItem.aspx/_api/web/lists/getbytitle('test')/items

My question here is which URL should be used before _api/web/lists/getbytitle('test')/items either

1. https://myOrganization.sharepoint.com
   or
2. https://myOrganization.sharepoint.com/sites/supplierABC/DataSheet/Forms/AllItems.aspx (files are present here)

Answer 1

Your REST URL should be:

_spPageContextInfo.webServerRelativeUrl + _api/web/lists/getbytitle('test')/items