I’ve recently developed a 1Password plugin for Quicksilver that gives you the ability to open up Go & Fill items in 1Password, as well as giving you an action to ‘Go & Fill…’ directly from Quicksilver.
To download this plugin, go over to my Github repository.
If you like the plugin then please do donate to the project – but note that this isn’t for the work I’ve done on Quicksilver itself, just the 1Password plugin.
If there’s something missing from the plugin, or you’ve found a bug then let me know – although do read the README first over at Github.

You’re welcome Adam!
Thanks for the kind words, and the donation of course
Those thoughts were my thoughts exactly – why can’t Quicksilver and 1Password be married together!?
A few months and many hours later I’ve managed to make something to do just that
There may be some more features coming soon, so keep an eye out
It’s Sydney university that I’ll be spending a year at, so we may just bump into each other!
Patrick, this is an unbelievable godsend to me, you have no idea. 1password is one of those rare times when I can’t quicksilver my way to something I want to access and one of the main causes of me reaching for the mouse. Delighted that somebody had the skills to get this up and let the rest of us benefit – sincere thanks. And have an awesome time in Aus, go nuts – you’ll love it.
Cheers
Adam (Sydney)