> ## Documentation Index
> Fetch the complete documentation index at: https://praison.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Retrieval K • Rust AI Agent SDK

> retrieval_k: Set retrieval k

# retrieval\_k

<div className="flex items-center gap-2">
  <Badge color="purple">Method</Badge>
</div>

> This is a method of the [**KnowledgeConfig**](../classes/KnowledgeConfig) class in the [**config**](../modules/config) module.

Set retrieval k

## Signature

```python theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
def retrieval_k(mut self, k: usize) -> Self
```

## Parameters

<ParamField query="k" type="usize" required={true}>
  No description available.
</ParamField>

### Returns

<ResponseField name="Returns" type="Self">
  The result of the operation.
</ResponseField>

***

## Related Documentation

<CardGroup cols={2}>
  <Card title="Rust Retrieval" icon="search" href="/docs/rust/retrieval" />

  <Card title="Rust Query" icon="magnifying-glass" href="/docs/rust/query" />

  <Card title="Rust Evaluation" icon="gavel" href="/docs/rust/evaluation" />

  <Card title="Rust Criteria" icon="check-double" href="/docs/rust/criteria" />
</CardGroup>