What do you use for analytics of your CLI tool?

# Context

I built a small CLI tool that I will distribute via Pypi. I would like to measure usage to inform future feature decisions.

# Question

What tools do people use to collect usage analytics on their CLI tools?

# Restrictions

I do not want to: - Authenticate users - Retain user identifiable data

# Limitations

I've looked at Amplitude, but you're supposed to put your API key there and my package is meant to be open source (the code, and therefore the key, will be public).