> ## 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.

# metadata • Rust AI Agent SDK

> metadata: Add metadata

# metadata

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

> This is a method of the [**HandoffConfig**](../classes/HandoffConfig) class in the [**workflow\_aliases**](../modules/workflow_aliases) module.

Add metadata

## Signature

```python theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
def metadata(mut self, key: impl Into<String>, value: serde_json::Value) -> Self
```

## Parameters

<ParamField query="key" type="impl Into<String>" required={true}>
  No description available.
</ParamField>

<ParamField query="value" type="serde_json::Value" required={true}>
  No description available.
</ParamField>

### Returns

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