@sorenpeter@darch.dk hey!
I’m watching that now your .txt is pointing to https://darch.dk/twtAgent.php

What are you trying? Catching the Headers as in https://twtxt.readthedocs.io/en/latest/user/discoverability.html ? (I think it’s a clever idea BTW)
And is it something you plan to add to timeline?

BTW, researching on that I found that @prologic was working on the following https://git.mills.io/yarnsocial/useragent#supported-user-agent-formats

I wasn’t aware of a few User-Agent Formats.

And I’m checking that timeline is not sending those headers. I should push a change on that soon.