fleet-memory/hindsight-docs/docs/developer/api/memory-banks.mdx
Nicolò Boschi 522b71aab8
doc: mental models (#199)
* doc: mental models

* doc: mental models
2026-01-26 14:27:08 +01:00

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---
sidebar_position: 6
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# Memory Banks
Memory banks are isolated containers that store all memory-related data for a specific context or use case.
import Tabs from '@theme/Tabs';
import TabItem from '@theme/TabItem';
import CodeSnippet from '@site/src/components/CodeSnippet';
{/* Import raw source files */}
import memoryBanksPy from '!!raw-loader!@site/examples/api/memory-banks.py';
import memoryBanksMjs from '!!raw-loader!@site/examples/api/memory-banks.mjs';
## What is a Memory Bank?
A memory bank is a complete, isolated storage unit containing:
- **Memories** — Facts and information retained from conversations
- **Documents** — Files and content indexed for retrieval
- **Entities** — People, places, concepts extracted from memories
- **Relationships** — Connections between entities in the knowledge graph
Banks are completely isolated from each other — memories stored in one bank are not visible to another.
You don't need to pre-create a bank. Hindsight will automatically create it with default settings when you first use it.
:::tip Prerequisites
Make sure you've completed the [Quick Start](./quickstart) to install the client and start the server.
:::
## Creating a Memory Bank
<Tabs>
<TabItem value="python" label="Python">
<CodeSnippet code={memoryBanksPy} section="create-bank" language="python" />
</TabItem>
<TabItem value="node" label="Node.js">
<CodeSnippet code={memoryBanksMjs} section="create-bank" language="javascript" />
</TabItem>
<TabItem value="cli" label="CLI">
```bash
# Set mission
hindsight bank mission my-bank "I am a research assistant specializing in ML"
# Set disposition
hindsight bank disposition my-bank \
--skepticism 4 \
--literalism 3 \
--empathy 3
```
</TabItem>
</Tabs>
## Mission and Disposition
Mission and disposition are optional settings that influence how the bank reasons during [reflect](./reflect) operations.
:::info
Mission and disposition only affect the `reflect` operation. They do not impact `retain`, `recall`, or other memory operations.
:::
### Mission
The mission is a first-person narrative providing context for reasoning:
<Tabs>
<TabItem value="python" label="Python">
<CodeSnippet code={memoryBanksPy} section="bank-mission" language="python" />
</TabItem>
<TabItem value="node" label="Node.js">
<CodeSnippet code={memoryBanksMjs} section="bank-mission" language="javascript" />
</TabItem>
</Tabs>
### Disposition Traits
Disposition traits influence how reasoning is performed during reflection. Each trait is scored 1 to 5:
| Trait | Low (1) | High (5) |
|-------|---------|----------|
| **Skepticism** | Trusting, accepts information at face value | Skeptical, questions and doubts claims |
| **Literalism** | Flexible interpretation, reads between the lines | Literal interpretation, takes things exactly as stated |
| **Empathy** | Detached, focuses on facts and logic | Empathetic, considers emotional context |