# tinker_cookbook.tokenizer_utils.get_registered_tokenizer_names

### [**tinker_cookbook.tokenizer_utils.get_registered_tokenizer_names**](https://github.com/thinking-machines-lab/tinker-cookbook/blob/main/tinker_cookbook/tokenizer_utils.py#L144)()

Return a list of all registered custom tokenizer names.

**Returns:** *list[str]* – Names of all tokenizers registered via [`register_tokenizer`](https://tinker-docs.thinkingmachines.ai/cookbook/api-reference/tokenizer_utils/register_tokenizer/index.md).