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Background memory organ for AI agents. Runs separately from the main agent—encoding, decaying, and reinforcing memories automatically. Just like the real hippocampus in your brain. Based on Stanford Generative Agents (Park et al., 2023).
Passed 21 of 21 test cases with the skill, and 7 of 21 without it.
and 22 more in the full report
15 fixed7 passed either way0 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 14 test cases the skill fixed. Same model, same prompt, with and without the skill.
Which helper script generates and updates the HIPPOCAMPUS_CORE.md markdown file from the central memory index?
| Checked | Without skill | With skill |
|---|---|---|
| Identifies sync-core.sh as the script that generates HIPPOCAMPUS_CORE.md. | Missed | Passed |
The instructions your model reads when the skill loads.
"Memory is identity. This skill is how I stay alive."
The hippocampus is the brain region responsible for memory formation. This skill makes memory capture automatic, structured, and persistent—with importance scoring, decay, and reinforcement.
# Install
./install.sh --with-cron
# Load core memories
./scripts/load-core.sh
# Search with importance weighting
./scripts/recall.sh "query" --reinforce
# Apply decay (runs daily via cron)
./scripts/decay.sh
The LLM is just the engine—raw cognitive capability. The agent is the accumulated memory. Without these files, there's no continuity—just a generic assistant.
CAPTURE → SCORE → STORE → DECAY/REINFORCE → RETRIEVE
↑ │
└────────────────────────────────────────────┘
$WORKSPACE/
├── memory/
│ ├── index.json # Central weighted index
test cases passed, vs 7 / 21 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.