embeddings are done using ChromaDB

support for more complex queries could be useful, but probably not using a query language since that would make it more difficult to use free-form text input.

You can already use it using an API: https://kantord.github.io/SeaGOAT/0.27.x/server/#understandi... so probably the best way to add support for more complex queries would be to have additional query parameters, and also to expose those flags/options/features through the CLI