The http component serves all files and data required for the Home Assistant frontend. You only need to add this to your configuration file if you want to change any of the default settings.

It’s HIGHLY recommended that you set the api_password, especially if you are planning to expose your installation to the internet.

# Example configuration.yaml entry
  api_password: YOUR_PASSWORD

Configuration variables:

  • api_password (Optional): Protect Home Assistant with a password.
  • server_host (Optional): Only listen to incoming requests on specific ip/host (default: accept all)
  • server_port (Optional): Let you set a port to use. Defaults to 8123.
  • development (Optional): Disable caching and load unvulcanized assets. Useful for Frontend development.
  • ssl_certificate (Optional): Path to your TLS/SSL certificate to serve Home Assistant over a secure connection.
  • ssl_key (Optional): Path to your TLS/SSL key to serve Home Assistant over a secure connection.
  • cors_allowed_origins (Optional): A list of origin domain names to allow CORS requests from. Enabling this will set the Access-Control-Allow-Origin header to the Origin header if it is found in the list, and the Access-Control-Allow-Headers header to Origin, Accept, X-Requested-With, Content-type, X-HA-access. You must provide the exact Origin, i.e. will allow requests from but not
  • approved_ips (Optional): A list of approved ips. Then it will be possible to login from given ips without providing a password.

The sample below shows a configuration entry with possible values:

# Example configuration.yaml entry
  api_password: YOUR_PASSWORD
  server_port: 12345
  ssl_certificate: /etc/letsencrypt/live/
  ssl_key: /etc/letsencrypt/live/

The Set up encryption using Let’s Encrypt blog post gives you details about the encryption of your traffic using free certificates from Let’s Encrypt.

On top of the http component is a REST API and a Python API available. There is also support for Server-sent events available.

The http platforms are not real platforms within the meaning of the terminology used around Home Assistant. Home Assistant’s REST API sends and receives messages over HTTP.

To use those kind of sensors or binary sensors in your installation no configuration in Home Assistant is needed. All configuration is done on the devices themselves. This means that you must be able to edit the target URL or endpoint and the payload. The entity will be created after the first message has arrived.

All requests need to be sent to the endpoint of the device and must be POST.

If you want to use Home Assistant to host or serve static files then create a directory called www under the .homeassistant configuration path. The static files in .homeassistant/www/ can be accessed by the following URL http://your.domain:8123/local/.