# CKB Simple UDT
## Metadata
**RFC Number**:: 25
**Status**:: #x
**Zettel**:: #zettel/fleeting
**Source**:: #from/browser
**URL**:: [github.com](https://github.com/nervosnetwork/rfcs/blob/master/rfcs/0025-simple-udt/0025-simple-udt.md)
**Host**:: [[github.com]]
**Created**:: [[2022-10-14]]
## Synopsis
This RFC defines the Simple User Defined Tokens(Simple UDT or SUDT) specification. Simple UDT provides a way for dapp developers to issue custom tokens on Nervos CKB. The simple part in Simple UDT means we are defining a minimal standard that contains whats absolutely needed, more sophisticated actions are left to CKBs flexibility to achieve.