@girish ah, so you can. But for some reason it seems to require at least 6 characters for it to work (I had already tried searching for the first few letters and hence thought it didn't work).
This seemed trivial to add, so I fixed it for next release. Thanks for the suggestion!
this could be a great alternative to Searx and Google
I know it is possible to index specific site with YaCy but, someone know if it's possible to embed it in a website ?