Ch 6 — Memory System: How OpenClaw Remembers
Three memory layers, Markdown files, hybrid search, and temporal decay
Chapter 6
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AThree Memory LayersShort-term, medium-term, long-term
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chat_bubble
Short-Term
Conversation turns
daily
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today
Medium-Term
YYYY-MM-DD.md
curated
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auto_stories
Long-Term
MEMORY.md
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descriptionSource of truth: plain Markdown files, human-readable, Git-friendly
BHybrid Search & RetrievalVector + BM25 with temporal decay
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search
Hybrid Search
70% vector + 30% BM25
decay
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trending_down
Temporal Decay
30-day half-life
CMemory Skill Internalscapture, recall, consolidate
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psychology
Memory Skill
capture / recall
DPrivacy & Session StateWho sees what, and how state is tracked
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lock
Privacy Controls
Private sessions only