Accountable agent memory: layered memory + hybrid retrieval where every memory carries provenance, every recall is re-derivable, every stale memory flags its own drift.
Install: pip install git+https://github.com/HarperZ9/mneme.git or download the wheel below.
Features: 4-tier layering, hybrid retrieval (BM25 + zero-dep fuzzy vectors + recency + temporal as-of), grounded entity graph, multi-user/multi-session, consolidation, accountable forgetting + supersede (timeline), re-derivable benchmark (76.6% reduction @ 100% answer-recall), MCP server, white-box inspector, ecosystem composition (gather->mneme->crucible). Zero-dep, deterministic, MIT. 82 tests.