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

# DEF_CALLBACK_PREFIX

> Variable DEF_CALLBACK_PREFIX in the Baileys API.

> `const` **DEF\_CALLBACK\_PREFIX**: `"CB:"` = `'CB:'`

Defined in: [src/Defaults/index.ts:14](https://github.com/WhiskeySockets/Baileys/blob/master/src/Defaults/index.ts#L14)