Polign - Lightweight stateless database for agent memory
Show HN: A lightweight, stateless database for agent memory
Polign is a lightweight, stateless database designed for agent memory, enabling deterministic, typed storage that runs on small hardware. It combines hybrid vector and BM25 search with structured filtering, supersession, and validation, all served from object storage with minimal resident memory. The open-source demo runs on a 2 GB ARM machine, serving 12.5 million Wikipedia passages from S3 at 37 MiB RSS. Ideal for edge agents, it reduces token costs and improves accuracy by moving schema decisions out of the LLM.
A typed memory store moves those decisions out of the model and into the schema. The model extracts a fact; the database determines what that fact means.
- Supermancho
There are countless agent memory stores today. Closed source is a non-starter.
- ajabhish
This looks promising! Curious why you named it `Polign`?
- unified101
Closed source - for those who maybe miss this. litestream with sqlite vector based design would be more apt for someone.