> ## 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.
# Null Gateway Trace Hook • AI Agent SDK
> NullGatewayTraceHook: Zero-cost no-op :class:`GatewayTraceHook` used when tracing is disabled.
# NullGatewayTraceHook
> Defined in the [**protocols**](../modules/protocols) module.
AI Agent
Zero-cost no-op :class:`GatewayTraceHook` used when tracing is disabled.
Every stage call returns a lightweight, argument-ignoring null context
manager (one small allocation per call), so firing the seam adds negligible
overhead on the hot path. This is the default a gateway uses until an
exporter plugin (e.g. the OTel/OTLP plugin in `praisonai-plugins`) is
supplied.
```mermaid theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
%%{init: {'theme': 'base', 'themeVariables': { 'primaryColor': '#8B0000', 'primaryTextColor': '#fff', 'primaryBorderColor': '#710101', 'lineColor': '#189AB4', 'secondaryColor': '#189AB4', 'tertiaryColor': '#fff' }}}%%
graph TD
event["Event Trigger"] --> hook["Hook: NullGatewayTraceHook"]
hook --> decision{"Decision"}
decision -- "Allow" --> proc["Process"]
decision -- "Deny" --> block["Block"]
style hook fill:#189AB4,color:#fff
style event fill:#8B0000,color:#fff
style proc fill:#8B0000,color:#fff
style block fill:#8B0000,color:#fff
```
## Methods
Return a no-op context manager, ignoring all arguments.
## Source
`praisonaiagents/gateway/protocols.py` at line 4866
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## Related Documentation