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113 lines
3.5 KiB
Markdown
113 lines
3.5 KiB
Markdown
---
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layout: page
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title: "RESTful Binary Sensor"
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description: "Instructions how to integrate REST binary sensors into Home Assistant."
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date: 2015-12-17 19:10
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sidebar: true
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comments: false
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sharing: true
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footer: true
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logo: restful.png
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ha_category: Binary Sensor
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ha_release: "0.10"
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ha_iot_class: "Local Polling"
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---
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The `rest` binary sensor platform is consuming a given endpoint which is exposed by a [RESTful API](https://en.wikipedia.org/wiki/Representational_state_transfer) of a device, an application, or a web service. The binary sensor has support for GET and POST requests.
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The JSON messages can contain different values like `1`, `"1"`, `TRUE`, `true`, `on`, or `open`. If the value is nested then use a [template](/topics/templating/).
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```json
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{
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"name": "Binary sensor",
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"state": {
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"open": "true",
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"timestamp": "2016-06-20 15:42:52.926733"
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}
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}
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```
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To enable this sensor, add the following lines to your `configuration.yaml` file for a GET request:
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```yaml
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# Example configuration.yaml entry
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binary_sensor:
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- platform: rest
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resource: http://IP_ADDRESS/ENDPOINT
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```
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or for a POST request:
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```yaml
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# Example configuration.yaml entry
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binary_sensor:
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- platform: rest
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resource: http://IP_ADDRESS/ENDPOINT
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method: POST
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```
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Configuration variables:
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- **resource** (*Required*): The resource or endpoint that contains the value.
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- **method** (*Optional*): The method of the request. Default is GET.
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- **name** (*Optional*): Name of the REST binary sensor.
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- **device_class** (*Optional*): The [type/class](/components/binary_sensor/) of the sensor to set the icon in the frontend.
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- **value_template** (*Optional*): Defines a [template](/topics/templating/) to extract the value.
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- **payload** (*Optional*): The payload to send with a POST request. Usually formed as a dictionary.
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- **verify_ssl** (*Optional*): Verify the certification of the endpoint. Default to True.
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- **authentication** (*Optional*): Type of the HTTP authentication. `basic` or `digest`.
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- **username** (*Optional*): The username for accessing the REST endpoint.
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- **password** (*Optional*): The password for accessing the REST endpoint.
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- **headers** (*Optional*): The headers for the requests.
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<p class='note warning'>
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Make sure that the URL exactly matches your endpoint or resource.
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</p>
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## {% linkable_title Examples %}
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In this section you find some real life examples of how to use this sensor.
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### {% linkable_title aREST sensor %}
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Instead of using an [aREST](/components/binary_sensor.arest/) binary sensor, you could retrieve the value of a device supporting aREST directly with a REST binary sensor.
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```yaml
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binary_sensor:
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- platform: rest
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resource: http://192.168.0.5/digital/9
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method: GET
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name: Light
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device_class: light
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value_template: {% raw %}'{{ value_json.return_value }}'{% endraw %}
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```
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### {% linkable_title Accessing an HTTP authentication protected endpoint %}
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The REST sensor supports HTTP authentication and customized headers.
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```yaml
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binary_sensor:
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- platform: rest
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resource: http://IP_ADDRESS:5000/binary_sensor
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username: ha1
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password: test1
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authentication: basic
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headers:
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User-Agent: Home Assistant
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Content-Type: application/json
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```
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The headers will contain all relevant details. This will also give you the ability to access endpoints that are protected by tokens.
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```bash
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Content-Length: 1024
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Host: IP_ADDRESS1:5000
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Authorization: Basic aGExOnRlc3Qx
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Accept-Encoding: identity
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Content-Type: application/json
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User-Agent: Home Assistant
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```
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