# GraphDefinition ## Get FHIR r4 graph definitions - [GET /site/{siteId}/fhir/graph-definition](https://docs.heydonto.com/apis/fhir/openapi/graphdefinition/fhirgraphdefinitioncontroller_getgraphdefinitions.md) ## Create FHIR r4 graph definition - [POST /site/{siteId}/fhir/graph-definition](https://docs.heydonto.com/apis/fhir/openapi/graphdefinition/fhirgraphdefinitioncontroller_creategraphdefinition.md) ## Get FHIR r4 graph definition by ID - [GET /site/{siteId}/fhir/graph-definition/{id}](https://docs.heydonto.com/apis/fhir/openapi/graphdefinition/fhirgraphdefinitioncontroller_getgraphdefinition.md) ## Update FHIR r4 graph definition - [PUT /site/{siteId}/fhir/graph-definition/{id}](https://docs.heydonto.com/apis/fhir/openapi/graphdefinition/fhirgraphdefinitioncontroller_updategraphdefinition.md) ## Delete FHIR r4 graph definition - [DELETE /site/{siteId}/fhir/graph-definition/{id}](https://docs.heydonto.com/apis/fhir/openapi/graphdefinition/fhirgraphdefinitioncontroller_deletegraphdefinition.md) ## Get FHIR r4 graph definition history by ID - [GET /site/{siteId}/fhir/graph-definition/{id}/history](https://docs.heydonto.com/apis/fhir/openapi/graphdefinition/fhirgraphdefinitioncontroller_getgraphdefinitionhistory.md)