I made a flag waver bot for this community.
call it with !wave in the comments or post body.

EDIT: there seems to be a bug in the bot library i’m using and it will reply anywhere on lemmy as long as I am subscribed to the community. I may shut the bot down until this is fixed to prevent spam.

EDIT2: It should be working now, I added a workaround for the library bug and opened a github issue.

Update: I have added body text waving and waving of multiple links in a post. Also waving links in comments.
Example (see comments):
test image
another link

Update 2: It’s open source now!!
github

Update3: lemmy.world is not federating with my instance for some reason, I can make comments but none of your comments are reaching my instance and the bot is not responding.

I’ve run some tests and the issue here is lemmy.world, I can see a post I made to !vexillologyjerk@lemmy.antemeridiem.xyz but not !vexillology@lemmy.world the issue seems to be intermittent starting and stopping throughout the day, needless to say there isn’t anything I can do about this, sorry.
It might be because I’m still on 0.17.4 but my server won’t run 0.18.0 and the bot won’t run on that version. nvm lemmy.world is also on 0.17.4, I have not idea what this issue is