> For the complete documentation index, see [llms.txt](https://developer.collibra.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.collibra.com/api/guides/knowledge-graph.md).

# Common concepts

The Knowledge Graph API is a lightweight graph query engine based on industry-standard [GraphQL](https://graphql.org/) language. It provides a single API to query most of the Collibra entities, such as assets, communities, domains and types, using SQL-like filtering capabilities. You can also sort entities using any of the available properties and page the results. As it's a query engine, it only provides read capabilities and no mutations are involved.