langgraph-store-inspeximus

A LangGraph BaseStore backed by inspeximus — a drop-in for InMemoryStore that also remembers what a value used to be.

pip install langgraph-store-inspeximus

from langgraph.store.inspeximus import InspeximusStore

store = InspeximusStore(path="store.jsonl")
store.put(("user", "42"), "timezone", {"tz": "UTC"})
store.put(("user", "42"), "timezone", {"tz": "PST"})   # overwrites, like InMemoryStore
store.get(("user", "42"), "timezone").value            # -> {"tz": "PST"}
store.history(("user", "42"), "timezone")              # -> [{"tz": "UTC"}, {"tz": "PST"}]

LangGraph ships no conformance suite for stores; its docs say to test against InMemoryStore as the reference. That is what store_audit.py does: every operation run twice, against the reference and against this store, three repeats, with a falsification control that breaks the adapter on purpose and must fail. It covers CRUD, namespace isolation, search/limit/delete-by-None, and list_namespaces with prefix, suffix, * wildcards, max_depth, ordering, limit and offset.

One deliberate divergence, stated rather than hidden: after the last key in a namespace is deleted, InMemoryStore still lists the now-empty namespace and this store does not. Matching it would mean a namespace name outliving the erasure of every value it held.

MIT · source