# Medplum GraphQL API FHIR-aware GraphQL endpoint at https://api.medplum.com/fhir/R4/$graphql. Supports typed nested queries, reverse-reference traversal (_reference), FHIRPath-style array filtering, and access-policy enforcement at the field level. **Endpoint:** https://api.medplum.com/fhir/R4/$graphql **Documentation:** https://www.medplum.com/docs/graphql **References:** - Documentation: https://www.medplum.com/docs/graphql