import json

def main(request):
    # Parse the input from the request (assumes JSON input)
    try:
        request_json = request.get_json(silent=True)
        num1 = request_json.get('num1')
        num2 = request_json.get('num2')

        # Ensure numbers are provided
        if num1 is None or num2 is None:
            return "Missing 'num1' or 'num2'", 400

        # Add the numbers
        result = float(num1) + float(num2)
        return json.dumps({"result": result}), 200
    except Exception as e:
        return f"Error: {str(e)}", 500