Tools · interactive

An n8n workflow, node by node

n8n runs a chain of nodes. A webhook starts it, an IF node picks a branch, and only one destination runs. Drag the amount across $100.

Shop

new order

Webhook

POST /order

amount > 100

Slack

#sales

the team

Drag the amount across $100, then run it. The dimmed branch will not run.

Order amount$240Above 100 notifies Slack. At or below it, only an email.

{ "amount": 240 }

Step 1 of 5 · read left to right

1
Webhook receives the order
Some other system POSTs JSON. That payload is the input to every later node.
{ "amount": 240 }
2
IF amount is over the threshold
The node tests amount > 100. It does not send anything itself.
240 > 100 → true
3
True: post to Slack
This node runs only when the test is true.
Post: New order for $240.
4
False: email the team
This node runs only when the test is false. Slack stays quiet.
Not this time. The test was true.
5
Record where it went
An execution is one path through the nodes, not both.
Sent to Slack #sales.

In production

Tools and technologies

Webhook-driven automation with branching is a category — n8n is one open-source option.

Not tied to one language — use these names when you search docs or design a system.