Is it possible to use this column with n8n ?
I didn’t get well how the trigger is working.
Is it possible equivalent to make a “request” to an endpoint ?
There are no Grist trigger nodes in n8n as far as I know. You will need to manually set up a webhook using the instructions in https://github.com/gristlabs/grist-core/issues/76#issuecomment-1025802544 and a webhook node: Webhook - n8n Documentation