> ## 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.

# nack • AI Agent SDK

> nack: Negative acknowledge - request redelivery.

# nack

AsyncMethod

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

Negative acknowledge - request redelivery.

## Signature

```python theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
async def nack(client_id: str, event_id: str) -> None
```

## Parameters

**client\_id** `str` *required*

No description available.

**event\_id** `str` *required*

No description available.

## Source

> [card] [View on GitHub](https://github.com/MervinPraison/PraisonAI/blob/main/src/praisonai-agents/praisonaiagents/gateway/protocols.py#L1980)
>
> `praisonaiagents/gateway/protocols.py` at line 1980


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