> For the complete documentation index, see [llms.txt](https://docs.greennode.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.greennode.ai/vserver/compute-hcm03-1a/auto-scaling/instructions-for-creating-receiver.md).
# Instructions for creating Receiver
Receiver is a feature that allows you to Scale (IN / OUT) 1 Group using a web hook.
**Step 1:** At the Auto-scaling group interface, select a group you want to use the receiver for
**Step 2:** Select receiver -> Create receiver
**Step 3:** Enter receiver name and Acion Type. There are currently 2 Actions
\- CLUSTER\_SCALE\_IN : Reduce instances, each time by 1 if there is no scaling policy attached
\- CLUSTER\_SCALE\_OUT: Increase instance, each time by 1 if there is no scaling policy attached
Select receiver to create, after successful creation you will see Receiver as shown below.
To be able to trigger (trigger) this webhook url you need the following information:
\+ Web hook url: path information for you to call in, you get it by clicking "Copy channel"
\+ User\_id: account identifier information, you get by accessing at the Account id field.
\+ Access key: authentication information, you contact us to be provided
For example, you have the following information:
\+ Web hook url:
\+ user\_id: 47777
\+ access\_key: 89fa022b-6c44-43f2-b51c-3b332fbbf462
You can use curl to enable the extension
curl -H 'Content-type: application/json' -H 'user\_id:46677-H 'access\_key: 89fa3452b-6345-43f2-0000-3b332fbbf462' -XPOST ' 6e88c3f851dc4f48b11276c79a847d1c/receiver/81935b94-fc5c-4d06-869f-61aaaa4797e6/scale?backend=4'
