> ## Documentation Index
> Fetch the complete documentation index at: https://docs.avrxt.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# A signed hello.

> Leaving a message in the AVRXT guestbook.

The [guestbook](https://www.avrxt.dev/guestbook) accepts signed messages when posting is enabled.

**1. Open the guestbook**

Browse the public messages and the current posting options.

**2. Sign in when prompted**

Use a supported identity provider shown by the guestbook.

**3. Write a considered message**

Follow the rules shown in the interface. Submission may be subject to automated moderation and rate limits.

Signing in does not grant access to administrative tools. Provider availability and posting controls can change.


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