Right now it's possible to have rules interact with each other through webhooks, including passing smart values on the sending payload, so that the rule that checks for incoming webhooks can use that.

However, it's not clear what the correct syntax to use these values is and which data can be handled this way. For example, the Version Name smart value is the following:

version.name

But the following needs to be configured on the webhook body for the incoming webhook rule to be able to use that smart value:

{"whVersion":"{{version.name}}"}

Having a page listing these interactions and values could massively improve the user experience when using such interactions.