Context

We would like to add support for Voyage AI auto-embedding in our LangGraph integrations as the default method to generate embeddings for MongoDB LongTerm Store. We would ideally make passing an embedding instance optional, where customers can use Voyage as the default embedding model. We will still support the ability for customers to pick their own model but as an optional parameter. More specifically we'd update the MongoDB LangGraph Store (Long-term Memory).

[Proof of Concept PR for langchain | https://github.com/langchain-ai/langchain-mongodb/pull/204]

Definition of done

This tracks adding the feature to the LangGraph Store.

Pitfalls

potential issues may arise due to general availability in the server.