GraphQL for archival metadata: An overview of the EHRI GraphQL API

The European Holocaust Research Infrastructure (EHRI) portal provides transnational access to archival metadata relating to the Holocaust. A GraphQL API has recently been added to the portal in order to expand access to EHRI data in structured form. The API defines a schema which mediates access to EHRI's graph-based data store, catering to both targeted and bulk metadata retrieval across a range of interrelated data types. This short paper provides an overview of the GraphQL API and illustrates a number of use-cases for the capturing of structured archival metadata.