# Captcha

{% hint style="info" %}
Are you just a member of a chat and not a chat administrator? 

Read the captcha description for chat members: <https://docs.fullyst.com/features/captcha/captcha-for-chat-members>
{% endhint %}

### Captcha configuration

For the current moment, you can configure a captcha with `/settings` command in DM with [@FullystBot](https://t.me/FullystBot)&#x20;

#### Button

<figure><img src="https://1355699699-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FvbbEGxRTwrzUPUEXxps8%2Fuploads%2FphuxYKXnAamFMPq7Kb09%2FScreenshot%202024-04-21%20at%2023.07.54.png?alt=media&#x26;token=fe4549c1-fe8b-44ec-8c56-dd4533b2bb5e" alt=""><figcaption><p>Button captcha in action (the user joined the chat but ignored the first captcha)</p></figcaption></figure>

This type of captcha is simple and easy to solve, but some spam bots can bypass this captcha. We recommend it to use this captcha type only with other spam-protection features like AI-antispam, NSFW protection, and moderation tools like [`/report`](https://docs.fullyst.com/fullyst-bots-commands/report) command

Math

<figure><img src="https://1355699699-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FvbbEGxRTwrzUPUEXxps8%2Fuploads%2FlLZImk61cHy46h0bkJOi%2FScreenshot%202024-04-21%20at%2023.05.02.png?alt=media&#x26;token=0da84f5d-96dc-49a8-91bc-ff221ed5496d" alt=""><figcaption><p>Math captcha in action (the user joined the chat but ignored the first captcha)</p></figcaption></figure>

This type of captcha provides an additional level of security and can protect your chat from 98% of spam bots.

With math type, all new users must solve a simple math problem (for example 28+7, 3+18, 45-8) with five options with only one correct. The user has only a limited number of attempts and each incorrect choice will regenerate the math problem and solutions, so this type of captcha is almost impossible to bypass by spambots. After reaching the maximum number of attempts, the user will be banned and you can unban them only with the [`/unban`](https://docs.fullyst.com/fullyst-bots-commands/unban) command or in chat's settings.


---

# 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.fullyst.com/features/captcha.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.