diff --git a/components/runners/claude-code-runner/.mcp.json b/components/runners/claude-code-runner/.mcp.json
index c308e2f7..55971cdc 100644
--- a/components/runners/claude-code-runner/.mcp.json
+++ b/components/runners/claude-code-runner/.mcp.json
@@ -22,7 +22,8 @@
         "GOOGLE_MCP_CREDENTIALS_DIR": "${GOOGLE_MCP_CREDENTIALS_DIR}",
         "MCP_SINGLE_USER_MODE": "1",
         "GOOGLE_OAUTH_CLIENT_ID": "${GOOGLE_OAUTH_CLIENT_ID}",
-        "GOOGLE_OAUTH_CLIENT_SECRET": "${GOOGLE_OAUTH_CLIENT_SECRET}"
+        "GOOGLE_OAUTH_CLIENT_SECRET": "${GOOGLE_OAUTH_CLIENT_SECRET}",
+        "USER_GOOGLE_EMAIL": "${USER_GOOGLE_EMAIL:-user@example.com}"
       }
     }
   }