Sending HTTP command to Home Assistant from other platforms

Configuration
1

Hi all, what do I need to setup in Home Assistant so I can send an http command to turn on/off a switch or light?
I’m running both Control4 and Home assistant and I need to control devices in HA from Control4. Control4 Support for HTTP GET and HTTP Post.

2

Use the REST API: REST API | Home Assistant Developer Docs

3

Thank you for your reply, will this allow me to send a simple HTTP line? Most of the solutions I found requires curl.

4

curl is a just a command line tool that lets you construct a request and send it. You can use whatever you want as long as it allows for adding the authorization token as shown. To control HA, the REST API requires a token.

You can also create a webhook trigger and POST to it without authorization: Automation Trigger - Home Assistant. Then you can do whatever you want in the automation, and even base it on JSON payload that you pass in (or not).

5

Thank you all for your help, I managed to do it via Webhook.
I created an automation for every action:

alias: Webhook OFF
description: ''
trigger:
  - platform: webhook
    webhook_id: basement_entrance_off
condition: []
action:
  - service: switch.turn_off
    target:
      entity_id: switch.zswitchbasementent_left
mode: single

From Control4 I issue an HTTP Post with:

http://homeassistant:8123/api/webhook/basement_entrance_off