What do you want to achieve by this? I've set this up on labs to look at it and currently it seems you can only list subscribers to lists, (un)sub an address and send emails to lists through the API. More clarify would be essential here.

Also a collection of machines is very very vague :) Specifically what machines? at the very least it would be fermium.

If it meets the intended usage, it has my general +1 as it seems to loop in well at least, configuration of IPs may be interesting but it seems fine from my perspective.

Is this part of the version of mailman we're using?
Does it provide access to data that's currently hidden such as the full list of lists? It sounds like it will let you subscribe/unsubscribe people without authentication as well?

list subscribers is exactly what I would initially want to do here.
See https://github.com/wikimedia/analytics-limn-wikidata-data/blob/master/src/social/mail/generate.php

It sounds like it will let you subscribe/unsubscribe people without authentication as well?

I may try and throw some PRs at it quickly / file some issues.

In T116288#1745660, @Krenair wrote:

Is this part of the version of mailman we're using?

Yes. It is built for the 2.1.x branch and I have it working in labs [which is, finally, a production clone].

Does it provide access to data that's currently hidden such as the full list of lists? It sounds like it will let you subscribe/unsubscribe people without authentication as well?

Yes, it shows a complete list of all lists known to mailman regardless of their status in the listinfo global page.

Also yes, it does allow any email address to be subscribed and unsubscribed form a list regardless of whether said person owns the email or not. No approvals are sent, it is just done by mailman. This does bring up a slight concern with me know, one which while I knew of, thought approvals were necessary and not done straight away by the code.

See https://github.com/TracyWebTech/mailman-api/issues/10