Probably Not exactly what you wanted but two related tools:

Metaphor.systems —

https://metaphor.systems/ Write out a short sentence or paragraph that looks like it should continue with a link, and it produces a list of links that would best complete it. I’ve found a lot of interesting and relevant links through this.

Elicit —

https://elicit.org/ Ask a research question and get citations. Looks nice but haven’t used it much