this would run a flow every time a user Installs the bot/app
Whenever a user authorizes a bot access to their account, Discord sends a webhook as part of the Oauth2 authorization flow. If you don’t know how to use Oauth2, please don’t use it or make suggestions surrounding it
If you’re talking about when a user invites the bot to a server, there’s already a trigger for that
For user installs of apps I don’t believe there’s a gateway event. I believe Discord sends a HTTP webhook, which you should already be able to handle with the standard incoming webhook trigger.
Closing this, if there’s a specific gateway event you’re looking to listen for, feel free to make a new suggestion but include its name and/or a direct link to the docs for that specific gateway event.