Manually triggering webhooks


I’m building my first site with Dato. Im using webhooks to call custom endpoints on my app. Most of them are well served by the available triggers, but I would like the admin to be able to trigger some of them on demand.
I thought about creating a dummy model and let the admin triggers updates on it but it seems kind of hacky since the model would need to be modified.
I understand there are many ways to call my endpoint, but I would like the client to be able to do it on a button push with the custom headers and payload I prepared in the webhooks.

Is there any function of plugin for this that I missed?