How to use RESTful command with Authtoken?

Configuration
1

I want to send a shutdown signal to an hifiberry Audiodevice. The curl command looks like this:

curl -X POST hifiberry.local:81/api/system/poweroff -H "Authtoken: hifiberry"

When I add this to the configuration.yaml I’m getting an error that Authtoken is unknown.
Is it a syntax problem or how to achieve this goal?

  sr_off:
    url: "http://192.168.1.21:81/api/system/poweroff"
    method: POST
    authtoken: hifiberry

All the other commands without the authtoken work perfect by the way.

2

authtoken is a header.

sr_off:
    url: "http://192.168.1.21:81/api/system/poweroff"
    method: POST
    headers:
       Authtoken: hifiberry
3

Failed to restart Home Assistant

The system cannot restart because the configuration is not valid: Error loading /config/configuration.yaml: while parsing a block mapping in "/config/configuration.yaml", line 3, column 1 expected <block end>, but found '<block mapping start>' in "/config/configuration.yaml", line 52, column 3

4

It works now!! Thanks a lot. The problem was that I did not copy the space in front of the sr_off. Now your solution works