Python Dependency Manager Companion

# Third-party services ## Authentication with alternative package indexes See the [alternative indexes integration guide](../../guides/integration/alternative-indexes.md) for details on authentication with popular alternative Python package indexes. ## Hugging Face support uv supports automatic authentication for the Hugging Face Hub. Specifically, if the `HF_TOKEN` environment variable is set, uv will propagate it to requests to `huggingface.co`. This is particularly useful for accessing private scripts in Hugging Face Datasets. For example, you can run the following command to execute the script `main.py` script from a private dataset: ```console $ HF_TOKEN=hf_... uv run https://huggingface.co/datasets/<user>/<name>/resolve/<branch>/main.py ``` You can disable automatic Hugging Face authentication by setting the `UV_NO_HF_TOKEN=1` environment variable.