> ## 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.

# subscribe • Rust AI Agent SDK

> subscribe: Subscribe to events on the global bus

# subscribe

<div className="flex items-center gap-2">
  <Badge color="teal">Function</Badge>
</div>

> This function is defined in the [**bus**](../modules/bus) module.

Subscribe to events on the global bus

## Signature

```python theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
def subscribe(event_type: EventType, handler: F) -> usize
where
    F: Fn(&Event) + Send + Sync + 'static,
```

## Parameters

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

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

### Returns

<ResponseField
  name="Returns"
  type="usize
where
F: Fn(&Event) + Send + Sync + 'static,"
>
  The result of the operation.
</ResponseField>

## Uses

* `get_event_bus`
* `subscribe`

## Source

<Card title="View on GitHub" icon="github" href="https://github.com/MervinPraison/PraisonAI/blob/main/src/praisonai-rust/praisonai/src/bus/mod.rs#L409">
  `praisonai/src/bus/mod.rs` at line 409
</Card>