# Source: https://docs.chatling.ai/chatbot/builder/variables/available-system-variables.md

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

# Available system variables

> List of all the system variables available and what they do.

Here are all the system variables that are available. If a variable is not present in your chatbot, you must [import it](/chatbot/builder/variables/import-system-variables).

`chat_id`

The unique identifier of the chat.

`user_id`

The unique identifier of the user.

`conversation_content`

The chat transcript (recent 25 messages).

`current_date`

The current date in UTC.

`current_time`

The current time in UTC.

`locale`

The user's browser locale, such as en-US, en-CA, fr-FR, pt-BR, etc.

`page_title`

The title of the page the user is currently on.

`page_url`

The URL of the page the user is currently on.

`timestamp`

The UNIX timestamp, which is the number of seconds since January 1, 1970 UTC.

`current_time`

The current time in UTC.

`current_date`

The current date in UTC.