Yes

https://join-lemmy.org/api/classes/LemmyHttp.html#search

hmm 🤔 … Normally, the following in the settings.yml should do the trick:

  - name : lemmy
    engine : json_engine
    search_url : https://lemmy.ml/api/v3/search?q={query}&page={pageno}&type_=Posts
    results_query : posts
    url_query : post/ap_id
    title_query : post/name
    content_query : post/body
    categories : general, social media
    shortcut : le
    paging : True
    disabled : False

But my searx instance doesn’t even seem to fetch the JSON.

OK, I said nothing. It works 😆

https://search.bka.li/search?q=what is lemmy&categories=social+media&language=en-US

One now could add e.g. comments too with something like this:

  - name : lemmy comments
    engine : json_engine
    search_url : https://lemmy.ml/api/v3/search?q={query}&page={pageno}&type_=Comments
    results_query : comments
    url_query : post/ap_id
    title_query : post/name
    content_query : post/body
    categories : general, social media
    shortcut : lec
    paging : True
    disabled : False

As well as communities:

  - name : lemmy communities
    engine : json_engine
    search_url : https://lemmy.ml/api/v3/search?q={query}&page={pageno}&type_=Communities
    results_query : communities
    url_query : post/ap_id
    title_query : post/name
    content_query : post/body
    categories : general, social media
    shortcut : leco
    paging : True
    disabled : False

User search is possible too, but adding this would only support bullying.

Big searx supporter here, absolutely agree