diff --git a/src/storage/src/storage3/_async/vectors.py b/src/storage/src/storage3/_async/vectors.py
index 8da9b83f..ee788a54 100644
--- a/src/storage/src/storage3/_async/vectors.py
+++ b/src/storage/src/storage3/_async/vectors.py
@@ -64,8 +64,10 @@ async def get_index(self, index_name: str) -> Optional[GetVectorIndexResponse]:
                 http_method="POST", path=["GetIndex"], body=body
             )
             return GetVectorIndexResponse.model_validate_json(data.content)
-        except StorageApiError:
-            return None
+        except StorageApiError as exc:
+            if str(exc.status) == "404":
+                return None
+            raise
 
     async def list_indexes(
         self,
@@ -190,8 +192,10 @@ async def get_bucket(self, bucket_name: str) -> Optional[GetVectorBucketResponse
                 http_method="POST", path=["GetVectorBucket"], body=body
             )
             return GetVectorBucketResponse.model_validate_json(data.content)
-        except StorageApiError:
-            return None
+        except StorageApiError as exc:
+            if str(exc.status) == "404":
+                return None
+            raise
 
     async def list_buckets(
         self,
diff --git a/src/storage/src/storage3/_sync/vectors.py b/src/storage/src/storage3/_sync/vectors.py
index 0673bd23..a8b065fe 100644
--- a/src/storage/src/storage3/_sync/vectors.py
+++ b/src/storage/src/storage3/_sync/vectors.py
@@ -62,8 +62,10 @@ def get_index(self, index_name: str) -> Optional[GetVectorIndexResponse]:
         try:
             data = self._request.send(http_method="POST", path=["GetIndex"], body=body)
             return GetVectorIndexResponse.model_validate_json(data.content)
-        except StorageApiError:
-            return None
+        except StorageApiError as exc:
+            if str(exc.status) == "404":
+                return None
+            raise
 
     def list_indexes(
         self,
@@ -178,8 +180,10 @@ def get_bucket(self, bucket_name: str) -> Optional[GetVectorBucketResponse]:
                 http_method="POST", path=["GetVectorBucket"], body=body
             )
             return GetVectorBucketResponse.model_validate_json(data.content)
-        except StorageApiError:
-            return None
+        except StorageApiError as exc:
+            if str(exc.status) == "404":
+                return None
+            raise
 
     def list_buckets(
         self,
diff --git a/src/storage/tests/_async/test_vectors.py b/src/storage/tests/_async/test_vectors.py
new file mode 100644
index 00000000..2257bc95
--- /dev/null
+++ b/src/storage/tests/_async/test_vectors.py
@@ -0,0 +1,57 @@
+import httpx
+import pytest
+from storage3 import AsyncStorageClient
+from storage3.exceptions import StorageApiError
+
+
+def error_handler(status_code: int) -> httpx.MockTransport:
+    def handler(request: httpx.Request) -> httpx.Response:
+        return httpx.Response(
+            status_code,
+            json={
+                "statusCode": status_code,
+                "error": "InternalError" if status_code == 500 else "NotFound",
+                "message": "Internal server error"
+                if status_code == 500
+                else "Resource not found",
+            },
+            request=request,
+        )
+
+    return httpx.MockTransport(handler)
+
+
+async def test_get_vector_bucket_propagates_server_errors() -> None:
+    async with httpx.AsyncClient(transport=error_handler(500)) as http:
+        client = AsyncStorageClient(
+            "https://example.supabase.co/storage/v1/",
+            {},
+            http_client=http,
+        )
+
+        with pytest.raises(StorageApiError, match="Internal server error"):
+            await client.vectors().get_bucket("embeddings")
+
+
+async def test_get_vector_index_propagates_server_errors() -> None:
+    async with httpx.AsyncClient(transport=error_handler(500)) as http:
+        client = AsyncStorageClient(
+            "https://example.supabase.co/storage/v1/",
+            {},
+            http_client=http,
+        )
+
+        with pytest.raises(StorageApiError, match="Internal server error"):
+            await client.vectors().from_("embeddings").get_index("documents")
+
+
+async def test_get_vector_resources_return_none_when_not_found() -> None:
+    async with httpx.AsyncClient(transport=error_handler(404)) as http:
+        client = AsyncStorageClient(
+            "https://example.supabase.co/storage/v1/",
+            {},
+            http_client=http,
+        )
+
+        assert await client.vectors().get_bucket("missing") is None
+        assert await client.vectors().from_("missing").get_index("missing") is None
diff --git a/src/storage/tests/_sync/test_vectors.py b/src/storage/tests/_sync/test_vectors.py
new file mode 100644
index 00000000..d0d00c2e
--- /dev/null
+++ b/src/storage/tests/_sync/test_vectors.py
@@ -0,0 +1,57 @@
+import httpx
+import pytest
+from storage3 import SyncStorageClient
+from storage3.exceptions import StorageApiError
+
+
+def error_handler(status_code: int) -> httpx.MockTransport:
+    def handler(request: httpx.Request) -> httpx.Response:
+        return httpx.Response(
+            status_code,
+            json={
+                "statusCode": status_code,
+                "error": "InternalError" if status_code == 500 else "NotFound",
+                "message": "Internal server error"
+                if status_code == 500
+                else "Resource not found",
+            },
+            request=request,
+        )
+
+    return httpx.MockTransport(handler)
+
+
+def test_get_vector_bucket_propagates_server_errors() -> None:
+    with httpx.Client(transport=error_handler(500)) as http:
+        client = SyncStorageClient(
+            "https://example.supabase.co/storage/v1/",
+            {},
+            http_client=http,
+        )
+
+        with pytest.raises(StorageApiError, match="Internal server error"):
+            client.vectors().get_bucket("embeddings")
+
+
+def test_get_vector_index_propagates_server_errors() -> None:
+    with httpx.Client(transport=error_handler(500)) as http:
+        client = SyncStorageClient(
+            "https://example.supabase.co/storage/v1/",
+            {},
+            http_client=http,
+        )
+
+        with pytest.raises(StorageApiError, match="Internal server error"):
+            client.vectors().from_("embeddings").get_index("documents")
+
+
+def test_get_vector_resources_return_none_when_not_found() -> None:
+    with httpx.Client(transport=error_handler(404)) as http:
+        client = SyncStorageClient(
+            "https://example.supabase.co/storage/v1/",
+            {},
+            http_client=http,
+        )
+
+        assert client.vectors().get_bucket("missing") is None
+        assert client.vectors().from_("missing").get_index("missing") is None