53 lines
1.8 KiB
Markdown
53 lines
1.8 KiB
Markdown
---
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title: Memory Backend
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type: system
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status: active
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created: 2026-07-22
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updated: 2026-08-01
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verified_on: 2026-08-01
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confidence: high
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tags: [memory, mnemosyne, agent]
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sources: [raw/configs/hermes-config-sanitized.txt]
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---
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# Memory Backend
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## Purpose
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Persist and recall agent memory across sessions.
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## Current Configuration
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- **Primary backend:** Mnemosyne (local native)
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- **Memory enabled:** true
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- **User profile enabled:** true
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- **Memory char limit:** 5000
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- **User char limit:** 3000
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- **Flush every:** 6 turns
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- **Auto sleep:** true
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- **Default scope:** session
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- **Vector type:** int8
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- **Profile isolation:** true (configured; requires gateway restart for the current messaging runtime)
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- **Shared surface:** `data/shared/mnemosyne.db`
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- **Shared surface read:** true
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- **Sync roles:** user
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- **Skip contexts:** cron, flush, subagent, background, skill_loop
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- **Reflect max calls per session:** 3
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## Storage Location
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- Mnemosyne home: `~/.hermes/mnemosyne/`
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- DB: `~/.hermes/mnemosyne/data/`
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- Backups: `~/.hermes/mnemosyne/backups/`
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- Logs: `~/.hermes/mnemosyne/logs/`
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- Models: `~/.hermes/mnemosyne/models/`
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- Config: `~/.hermes/mnemosyne/config.yaml`
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## Known Issues
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- Health monitoring currently treats capture as stale only after 24 hours; an activity-aware comparison is preferable to catch dry-intake failures sooner without false alarms during idle periods.
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- The 2026-08-01 automatic-capture failure and repair are documented in [[incidents/2026-08-01-mnemosyne-capture-failure]].
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**Correction (2026-07-22, per Anthony):** this page previously referenced Hindsight as a possibly-used backend on this box. That was a mix-up with a different Hermes instance — see [[comparisons/memory-backends]].
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## Related
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- [[memory-backend]]
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- [[systems/mnemosyne]]
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- [[experiments/index]]
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