diff --git a/src/linkeddata_api/domain/viewer/resource/__init__.py b/src/linkeddata_api/domain/viewer/resource/__init__.py
index 0f5c7c8..42dfece 100644
--- a/src/linkeddata_api/domain/viewer/resource/__init__.py
+++ b/src/linkeddata_api/domain/viewer/resource/__init__.py
@@ -9,7 +9,7 @@
 from . import json
 
 
-def _handle_json_response(uri: str, sparql_endpoint: str) -> domain.schema.Resource:
+def _handle_json_response(uri: str, sparql_endpoint: str) -> str:
     try:
         result = json.get(uri, sparql_endpoint)
     except (RequestError, SPARQLNotFoundError, SPARQLResultJSONError) as err:
@@ -33,7 +33,7 @@ def _handle_rdf_response(
     graph.parse(data=response.text, format=format_)
 
     if len(graph) == 0:
-        return "Resource not found", 404
+        raise SPARQLNotFoundError(f"Resource with URI {uri} not found.")
 
     if not include_incoming_relationships:
         graph.remove((None, None, URIRef(uri)))
diff --git a/src/linkeddata_api/views/api_v1/viewer/resource.py b/src/linkeddata_api/views/api_v1/viewer/resource.py
index 47a88a5..0b30f72 100644
--- a/src/linkeddata_api/views/api_v1/viewer/resource.py
+++ b/src/linkeddata_api/views/api_v1/viewer/resource.py
@@ -29,6 +29,10 @@ def get_resource():
         True if include_incoming_relationships == "true" else False
     )
 
+    if uri is None or sparql_endpoint is None:
+        err_msg = "Required query parameters 'uri' or 'sparql_endpoint' was not provided."
+        raise HTTPException(err_msg, Response(err_msg, 404))
+
     logger.info(
         """
 GET /viewer/resource
@@ -65,4 +69,8 @@ def get_resource():
             response=Response(str(err), mimetype="text/plain", status=500),
         ) from err
 
-    return Response(result, mimetype=format_)
+    return Response(
+        result,
+        mimetype=format_,
+        headers={"cache-control": "max-age=600, s-maxage=3600"},
+    )
diff --git a/tests/api_v1/resource/test_resource_describe.py b/tests/api_v1/resource/test_resource_describe.py
index b08a62b..98e7905 100644
--- a/tests/api_v1/resource/test_resource_describe.py
+++ b/tests/api_v1/resource/test_resource_describe.py
@@ -8,7 +8,7 @@
 
 @pytest.fixture
 def url() -> str:
-    return "/api/v1.0/resource"
+    return "/api/v1.0/viewer/resource"
 
 
 value = """
@@ -56,7 +56,7 @@ def url() -> str:
             "text/turtle",
             "text/turtle",
             "https://linked.data.gov.au/def/nrm",
-            "dawe_vocabs_core",
+            "https://graphdb.tern.org.au/repositories/dawe_vocabs_core",
             "false",
             value,
             22,
@@ -68,10 +68,10 @@ def url() -> str:
             "text/turtle",
             "text/html",
             "https://linked.data.gov.au/def/nrm/not-exist",
-            "dawe_vocabs_core",
+            "https://graphdb.tern.org.au/repositories/dawe_vocabs_core",
             "false",
             "",
-            22,
+            None,
         ),
         # RDF4J repository does not exist
         (
@@ -80,10 +80,10 @@ def url() -> str:
             "text/turtle",
             "text/html",
             "https://linked.data.gov.au/def/nrm",
-            "dawe_vocabs_core-not-exist",
+            "https://graphdb.tern.org.au/repositories/dawe_vocabs_core-not-exist",
             "false",
             "",
-            22,
+            None,
         ),
         # Include incoming relationships
         (
@@ -92,10 +92,10 @@ def url() -> str:
             "text/turtle",
             "text/turtle",
             "https://linked.data.gov.au/def/nrm",
-            "dawe_vocabs_core",
+            "https://graphdb.tern.org.au/repositories/dawe_vocabs_core",
             "true",
             value,
-            23,
+            3179,
         ),
         # No accepted format, default to text/turtle
         (
@@ -104,7 +104,7 @@ def url() -> str:
             "",
             "text/turtle",
             "https://linked.data.gov.au/def/nrm",
-            "dawe_vocabs_core",
+            "https://graphdb.tern.org.au/repositories/dawe_vocabs_core",
             "false",
             value,
             22,
@@ -134,11 +134,11 @@ def test_describe(
     response: TestResponse = client.get(
         url,
         query_string={
-            "repository_id": repository_id,
+            "sparql_endpoint": repository_id,
             "uri": uri,
             "include_incoming_relationships": include_incoming_relationships,
+            "format": accept_format,
         },
-        headers={"accept": accept_format},
     )
     assert response.status_code == response_status_code
     assert expected_format in response.headers.get("content-type")