I'm wondering how can i get a repository API , i explain a summary , im using "Dspace connector" from Omeka S and im trying to get all the comunities from a Repository , https://74.208.251.39/ , but Dspace Connector is asking me for an endpoint , an API from the site , i know that is fact from the server , but is it in a file or is a part of some code or how can i get that api ?
DSpace has different APIs, but the Omeka manual specifies, it is looking for the standard Rest API. You should ask the operator of the DSpace repository you want to connect to, if they have the Rest API deployed and to what endpoint it is deployed to. The DSpace operator might also have restricted access to the API.
There is a section on the DSpace Rest API in the DSpace manual. If you are yourself the DSpace operator, you'll learn there how to deploy the Rest API.