> ## 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.

# Has Middleware • AI Agent SDK

> has_middleware: Check if middleware is registered for a runtime.

# has\_middleware

Method

> This is a method of the [**MiddlewareRegistry**](https://praison.ai/docs/sdk/reference/praisonaiagents/classes/MiddlewareRegistry.md) class in the [**middleware\_registry**](https://praison.ai/docs/sdk/reference/praisonaiagents/modules/middleware_registry.md) module.

Check if middleware is registered for a runtime.

## Signature

```python theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
def has_middleware(runtime_id: str) -> bool
```

## Parameters

**runtime\_id** `str` *required*

Runtime identifier to check

### Returns

**Returns** `bool`

True if custom middleware is registered, False otherwise

## Source

> [card] [View on GitHub](https://github.com/MervinPraison/PraisonAI/blob/main/src/praisonai-agents/praisonaiagents/runtime/middleware_registry.py#L92)
>
> `praisonaiagents/runtime/middleware_registry.py` at line 92

***

## Related Documentation

> [card] [Middleware Feature](https://praison.ai/docs/docs/features/middleware)


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