Does some kind of "Genome Browser URL API", or other documented URL-method exists?

Yes it's called, mysql

or DAS

:-)

Thanks Pierre, but i was searching for a URL-based solution.

I found that [?]the link I posted in the question[?] was not outdated, its method actually works.

I was trying to send a POST request and I get back the Table Browser page, but if I send a GET request with those variables [?]submit=submit&hgta_doTopSubmit=1[?] it works with no problems.

Thank you anyway.

With curl you can send post variables with the -F argument.

See for details man curl:

curl -F "web=@index.html;type=text/html" url.com