Local-first memory & context framework
Sovereign memory for AI agents.
Lummenna organizes agent memory as a memory palace, retrieves with hybrid search — BM25, dense vectors, and graph traversal fused with reciprocal rank fusion — and manages the lifecycle with three-layer forgetting. Embeddings run on-device. Storage is one SQLite file. No cloud, no phone-home. Free for developers; Pro runs it as infrastructure.
Free & open source under AGPL-3.0-or-later · Python 3.10+ · macOS, Linux, Windows
Why Lummenna
Memory your agents own — on hardware you own.
Five properties, engineered in rather than promised.
Sovereign
Your data. Under your control. Verification, retrieval, and storage all happen on your machine — air-gapped deployments work.
Private
Local-first, always. No telemetry, no license server, no per-query API calls. The dashboard itself runs fully offline.
Persistent
Memory that endures. Context that remains. A single SQLite file holds the whole palace — trivial to back up, move, or inspect.
Intelligent
AI that remembers what matters. Hybrid retrieval fuses lexical, semantic, and graph signals with reciprocal rank fusion.
Attentive
Signal over noise. Purpose over clutter. Three-layer forgetting — time decay, interference, budget eviction — keeps memory sharp.
Integrated
MCP server for ten coding agents and a LangChain memory adapter — free. Pro adds the FastAPI REST server + dashboard, LangGraph checkpointing, and P2P sync.
How it works
A palace, a searchlight, a gardener.
Memory palace
Memories live as chunks inside loci inside rooms — the classical method of loci, made queryable. Structure carries meaning that flat vector stores lose.
Hybrid search
BM25 full-text, dense vectors, and graph traversal run together and fuse with reciprocal rank fusion. Token-budgeted context assembly returns exactly what fits.
Three-layer lifecycle
Time-based decay, similarity interference, and budget eviction degrade memories gracefully — FP32 → FP16 → INT8 → BINARY → released — instead of hoarding everything forever.
Works where your agents work
One memory across every tool.
Ship-ready MCP configs are included for ten clients, plus framework adapters and a REST API.
Get started in minutes
The Community Edition is free. Forever.
The complete framework under AGPL-3.0-or-later. Pro adds the commercial license and enterprise controls.