In a saucepan over low heat, combine mayonnaise, Thai sweet chili sauce, soy sauce, and rice vinegar.
Whisk in garlic powder, onion powder, paprika, Old Bay seasoning, cayenne pepper, and black pepper.
Warm the mixture, stirring continuously until it gently simmers.
Take it off the heat and allow it to cool to room temperature.
Stir in chopped green onions.
Move the sauce to a blender and blend until it becomes smooth.
Pour the sauce into an airtight container for storage.