購入後にユーザーをグループに追加

[hawm]

Here a guide for Zapier integrated.

Make requests to the Discourse API with Zapier

Requests to the Discourse API can be automated by creating a Zap that uses a Zapier Webhook as its action step. This topic will describe how to perform requests for the following actions: add user to group grant a custom badge To figure out how to perform other types of API requests with Zapier, read through the topic and then search the Discourse API docs for the action you are wanting to perform. You can also find how to create an API request for a specific action by reading Reverse engi…

And I think there also another solution for Integromat.