# Reactions

The section is available on the main page of the project, where all our scenarios are listed.

![](/files/8fP9GucsrSZigcBbibz7)

Currently there is a preprocessing filter here

![](/files/dbALHemb4zF94oD1Vbwi)

### Preprocessing filter

Fires before all other events and actions. Needed for preliminary user verification. You can add any number of conditions: whether a person is on a certain list, what value his variables have, what social network he wrote to, etc.

![](/files/Ym574p8XWQxaosEq8kHK)

Note two specific actions within a reaction: abort message processing and continue processing.

![](/files/j9fIpaWVUbaUzzlpYqnZ)

Suppose: if the %ban% variable has the value “yes” for the user, then the bot immediately stops processing.


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

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

```
GET https://docs.smartbotpro.io/scripts/reactions.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
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.