diff --git a/studio/backend/core/data_recipe/service.py b/studio/backend/core/data_recipe/service.py
index f2c25e62f8..01855f5b1d 100644
--- a/studio/backend/core/data_recipe/service.py
+++ b/studio/backend/core/data_recipe/service.py
@@ -184,6 +184,7 @@ def build_mcp_providers(
                 MCPProvider(
                     name=str(provider.get("name", "")),
                     endpoint=str(provider.get("endpoint", "")),
+                    provider_type=str(provider_type),
                     api_key=str(api_key) if api_key else None,
                 )
             )
diff --git a/studio/backend/requirements/single-env/data-designer-deps.txt b/studio/backend/requirements/single-env/data-designer-deps.txt
index cbf8856073..dfc5b9bf21 100644
--- a/studio/backend/requirements/single-env/data-designer-deps.txt
+++ b/studio/backend/requirements/single-env/data-designer-deps.txt
@@ -1,6 +1,7 @@
 # Data Designer runtime deps installed explicitly (single-env mode).
+# DuckDB 1.5 removed Relation.record_batch(); keep <1.5 until upstream ships the fix.
 anyascii<1,>=0.3.3
-duckdb<2,>=1.1.3
+duckdb<1.5,>=1.1.3
 faker<21,>=20.1.0
 httpx<1,>=0.27.2
 httpx-retries<1,>=0.4.2
diff --git a/studio/backend/requirements/single-env/data-designer.txt b/studio/backend/requirements/single-env/data-designer.txt
index c5ddcddc36..8daa1eca43 100644
--- a/studio/backend/requirements/single-env/data-designer.txt
+++ b/studio/backend/requirements/single-env/data-designer.txt
@@ -1,5 +1,5 @@
 # Install Data Designer in same env as Unsloth.
-data-designer==0.5.1
-data-designer-config==0.5.1
-data-designer-engine==0.5.1
+data-designer==0.5.2
+data-designer-config==0.5.2
+data-designer-engine==0.5.2
 prompt-toolkit>=3,<4