I am not sure. I think its worth asking the server. Things that @luckyfatima mentioned are for sure made to order and can have not-very-spicy fillings.
I don’t see a lot of curry dishes in South Indian dishes, and I think those curry dishes from the North has a higher likelihood of being cooked en masse.
But in general, I am pretty confused about spice levels in Indian restaurants around the South Bay. In general one would think the Northern food is less spicy than the ones from the South. But here its all over the place. Even within one dish in one restaurant, it can be all over the place. For example when I used to live right next to Shalimar, and I believe they are Northern and Pakistani, I had their biryani dish many times. It ranged from barely hot to 'barely could eat 30% without drinking so much water that my stomach filled up by the water and tongue was still burning). I think Bay Area doesn’t have the weather to support the real South Indian spicy (hot and humid), and perhaps kitchen are more willing to accommodate.
