> ## 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.

# Session Start • AI Agent SDK

> session_start: Emit session start event.

# session\_start

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

> This is a method of the [**ContextTraceEmitter**](../classes/ContextTraceEmitter) class in the [**context\_events**](../modules/context_events) module.

Emit session start event.

## Signature

```python theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
def session_start(metadata: Optional[Dict[str, Any]]) -> None
```

## Parameters

<ParamField query="metadata" type="Optional" required={false}>
  No description available.
</ParamField>

## Uses

* `ContextEvent`
* `time.time`

## Source

<Card title="View on GitHub" icon="github" href="https://github.com/MervinPraison/PraisonAI/blob/main/src/praisonai-agents/praisonaiagents/trace/context_events.py#L442">
  `praisonaiagents/trace/context_events.py` at line 442
</Card>

***

## Related Documentation

<CardGroup cols={2}>
  <Card title="Session Management" icon="clock" href="/docs/docs/concepts/session-management" />

  <Card title="Sessions Feature" icon="folder" href="/docs/docs/features/sessions" />

  <Card title="Session Persistence" icon="database" href="/docs/docs/features/session-persistence" />
</CardGroup>