memx: an open-source CLI that debugs agent memory failures via state snapshot diffs

vivek9patel · reddit · 2026-09-14

Developer vivek9patel released memx, an experimental open-source CLI for debugging agent memory engines (Mem0, Supermemory, Zep/Graphiti, custom vector/graph stores). Unlike benchmarks like LoCoMo that only grade final LLM responses, memx hooks into memory backends, takes pre/post-session state snapshots, and diffs them against expected updates to classify failures into four stages: failed extraction, ignored contradiction, failed invalidation of stale records, or retriever fetching the wrong node. Repo: github.com/vivek9patel/memx.

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