Magentic and PEP 723 example. https://chand1012.mit-license.org

dudeify.py

#!/usr/bin/env -S uv run --script
# /// script
# requires-python = ">=3.10"
# dependencies = [
#     "fire",
#     "magentic"
# ]
# ///

import fire
from magentic import prompt

@prompt('Add more "dude"ness to: {phrase}')
def dudeify(phrase: str) -> str: ...  # No function body as this is never executed

if __name__=="__main__":
	fire.Fire(dudeify)

Be sure to put a space between the triple slashes and the word script in the metadata! I didn't do this on the version revision and it doesn't work!