# Filter rule nodes

{% hint style="info" %}
Filter Nodes are used for Message filtering and routing.
{% endhint %}

{% tabs %}
{% tab title="Quick links" %}
{% content-ref url="/pages/VT8fu83lViGHpfXm4WOm" %}
[check alarm status](/tesenso-iot-cloud/rule-engine/rule-engine/filter-rule-nodes/check-alarm-status.md)
{% endcontent-ref %}

{% content-ref url="/pages/iwidmJJJHM42CcyykMko" %}
[check existence fields](/tesenso-iot-cloud/rule-engine/rule-engine/filter-rule-nodes/check-existence-fields.md)
{% endcontent-ref %}

{% content-ref url="/pages/YG5y4OOdBJCNWu0A2ygA" %}
[check relation](/tesenso-iot-cloud/rule-engine/rule-engine/filter-rule-nodes/check-relation.md)
{% endcontent-ref %}

{% content-ref url="/pages/HcGD1Xeavnz8lqQ5RU83" %}
[gps geofencing filter](/tesenso-iot-cloud/rule-engine/rule-engine/filter-rule-nodes/gps-geofencing-filter.md)
{% endcontent-ref %}

{% content-ref url="/pages/o3HWLs6wLNvAHP0ZyoEA" %}
[message type filter](/tesenso-iot-cloud/rule-engine/rule-engine/filter-rule-nodes/message-type-filter.md)
{% endcontent-ref %}

{% content-ref url="/pages/cgj0JEUPXuMkXXJbFcOo" %}
[message type switch](/tesenso-iot-cloud/rule-engine/rule-engine/filter-rule-nodes/message-type-switch.md)
{% endcontent-ref %}

{% content-ref url="/pages/EGwTR8b1NoVEIvzU5X7n" %}
[originator type switch](/tesenso-iot-cloud/rule-engine/rule-engine/filter-rule-nodes/originator-type-switch.md)
{% endcontent-ref %}

{% content-ref url="/pages/qiwjWv3D5261oBUZEW3z" %}
[script filter](/tesenso-iot-cloud/rule-engine/rule-engine/filter-rule-nodes/script-filter.md)
{% endcontent-ref %}

{% content-ref url="/pages/qiwjWv3D5261oBUZEW3z" %}
[script filter](/tesenso-iot-cloud/rule-engine/rule-engine/filter-rule-nodes/script-filter.md)
{% endcontent-ref %}

{% endtab %}

{% tab title="Overview" %}
![](/files/ZYKtUXGbphVQu45RonWA)

{% endtab %}
{% endtabs %}


---

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Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
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```

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The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.