# Cube >[Cube](https://cube.dev/) is the Semantic Layer for building data apps. It helps > data engineers and application developers access data from modern data stores, > organize it into consistent definitions, and deliver it to every application. ## Installation and Setup We have to get the API key and the URL of the Cube instance. See [these instructions](https://cube.dev/docs/product/apis-integrations/rest-api#configuration-base-path). ## Document loader ### Cube Semantic Layer See a [usage example](/docs/integrations/document_loaders/cube_semantic). ```python from langchain_community.document_loaders import CubeSemanticLoader ```