Data Web API Refresh Issue

Hello All, 
I have a dillemma id like some asisstance with. I have the age old Web.Contents scheduled refresh issue when i build reports from a specific source (I pretty much only work with htis source. 

I have the below M Code for the data 

let

Source = Csv.Document(Web.Contents("Put Helm CONNECT CSV Connection String Here", [ApiKeyName= "apikey"]),[Delimiter=",", Encoding=65001, QuoteStyle=QuoteStyle.Csv]),#"Promoted Headers" = Table.PromoteHeaders(Source)

in

#"Promoted Headers"

But witht he above I subsequantly cannot refresh this on the service and the onlyw ay i could figure to make this work is via the below by addine api within the query 

let
    ApiKey = "your_api_key_here",
    Url = "CSV String here&apikey=" & ApiKey, //keep the &apikey=
    Source = Csv.Document(Web.Contents(Url), [Delimiter=",", Encoding=65001, QuoteStyle=QuoteStyle.Csv]),
    #"Promoted Headers" = Table.PromoteHeaders(Source)
in
    #"Promoted Headers"

But this obviousis not the most secure way pass the API key this way. 

Does anyone have any better solutions i could try to be more secure witht he API key as Im not always the one witht he key so the ideal situation would be to prompt thd user to place the key in when they get the file to upload to there own service and it then allows scheduled refresh

I have done some research on the topic and mosta  referencing the jscontents and some arent working for (inc the Skip test connection)