Extending a federated graph with third-party data and metadata

Abstract

Technologies are described herein for extending a federated graph with third-party data or metadata. A federated facet provider service registers with a federated graph provider service as a provider of a facet for a resource in a graph. For example, the federated facet provider service can provide a callback uniform resource locator ('URL') or a uniform resource identifier ('URI') template for resolving the callback URL. When the federated graph provider service receives a request for a facet from a service client, the federated graph provider service determines a callback network address for the federated facet provider service and obtains an authentication token for the federated facet provider service. A response is provided to the service client that causes the service client to redirect to the federated facet provider service to obtain the requested facet utilizing the authentication token. The federated facet provider service provides the requested facet directly to the service client.