# 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#L148)()

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/).