Once you spend some time building a custom app, you might want to sell it by subscription or by fixed price.
The first option that comes to mind is building an external API that will track each app request and authenticate the user. That’s exactly what we did at makeitfuture with all makemarket apps.
However that requires a lot of development so we came up with a better solution when we developed formsformake which we call Local Authentication, and by local we refer to “make”.
Step 1: Include OrgID and Zone inside your mappable parameters:
{
"name": "orgid",
"type": "hidden",
"label": "Organisation ID",
"required": false,
"default": "{{var.organization.id}}"
},
{
"name": "zone",
"type": "hidden",
"label": "Zone Make",
"required": false,
"default": "{{var.organization.zoneDomain}}"
}
Step 2.
Create a common array lAuth which will include all organizations that should have access to the apps:
{
"lAuth": [
"eu1.make.celonis.com-1111",
"us1.make.com-222"
}
Step 3:
Add a condition on each module:
{
"response": {
"valid":{
"condition": "{{if(contains(common.lAuth,parameters.zone+'-'+parameters.orgid)=true,true)}}",
"message": "Your organisation is not authorised. In order to be able to use it, please make an account on Forms for Make - `https://formsformake.com/login_signup`"
}
}
}
Step 4:
Create a payment link, subscription link on stripe or other service where you collect the user organization id once subscribed. Check also Forms for Make Register Module for inspiration 
Step 5:
Trigger a scenario for each new subscription to update the App Common lAuth array for each new subscriber and for each cancelation if needed.
Thats it!
Do you need any help implementing it? DM me.
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