diff --git a/prez/routers/sparql.py b/prez/routers/sparql.py
index 34e01221..8e329fa7 100644
--- a/prez/routers/sparql.py
+++ b/prez/routers/sparql.py
@@ -1,6 +1,7 @@
 import io
 
 from fastapi import APIRouter, Depends
+from fastapi.responses import JSONResponse, Response
 from rdflib import Namespace, Graph
 from starlette.background import BackgroundTask
 from starlette.datastructures import Headers
@@ -52,10 +53,25 @@ async def sparql_endpoint(
             headers=prof_and_mt_info.profile_headers,
         )
     else:
-        response = await repo.sparql(query, request.headers.raw)
-        return StreamingResponse(
-            response.aiter_raw(),
-            status_code=response.status_code,
-            headers=dict(response.headers),
-            background=BackgroundTask(response.aclose),
-        )
+        # response = await repo.sparql(query, request.headers.raw)
+        # return StreamingResponse(
+        #     response.aiter_raw(),
+        #     status_code=response.status_code,
+        #     headers=dict(response.headers),
+        #     background=BackgroundTask(response.aclose),
+        # )
+        query_result = await repo.sparql(query, request.headers.raw)
+        if isinstance(query_result, dict):
+            return JSONResponse(content=query_result)
+        elif isinstance(query_result, Graph):
+            return Response(
+                content=query_result.serialize(format="text/turtle"),
+                status_code=200
+            )
+        else:
+            return StreamingResponse(
+                query_result.aiter_raw(),
+                status_code=query_result.status_code,
+                headers=dict(query_result.headers),
+                background=BackgroundTask(query_result.aclose),
+            )
diff --git a/prez/sparql/methods.py b/prez/sparql/methods.py
index 389448c2..fbb783d2 100644
--- a/prez/sparql/methods.py
+++ b/prez/sparql/methods.py
@@ -155,11 +155,8 @@ def _sync_tabular_query_to_table(self, query: str, context: URIRef = None) -> tu
         # only return the bindings from the results.
         return context, results_dict["results"]["bindings"]
 
-    def _sparql(self, request: Request) -> dict | Graph:
-        try:
-            query = request.query_params["query"]
-        except KeyError:
-            raise KeyError(f"No query was provided in the request parameters.")
+    def _sparql(self, query: str) -> dict | Graph | bool:
+        """Submit a sparql query to the pyoxigraph store and return the formatted results."""
         results = self.pyoxi_store.query(query)
         if isinstance(results, pyoxigraph.QuerySolutions):  # a SELECT query result
             results_dict = self._handle_query_solution_results(results)
@@ -181,8 +178,8 @@ async def tabular_query_to_table(self, query: str, context: URIRef = None) -> li
             self._sync_tabular_query_to_table, query, context
         )
 
-    async def sparql(self, request: Request) -> list | Graph:
-        return self._sparql(request)
+    async def sparql(self, query: str, raw_headers: list[tuple[bytes, bytes]], method: str = "") -> list | Graph | bool:
+        return self._sparql(query)
 
     @staticmethod
     def _pyoxi_result_type(term) -> str: