> ## 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.
# Hook Registry • AI Agent SDK
> HookRegistry: Registry for managing hooks.
# HookRegistry
> Defined in the [**registry**](../modules/registry) module.
AI Agent
Registry for managing hooks.
Provides methods to register, unregister, and lookup hooks
for different events.
```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: HookRegistry"]
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
```
## Constructor
No description available.
## Methods
Check if hooks are enabled.
Enable or disable hooks.
Register a hook definition.
Register a Python function as a hook.
Register a shell command as a hook.
Decorator to register a function as a hook.
Unregister a hook by ID.
Get all hooks for an event, optionally filtered by target.
Check if there are any hooks registered for an event.
Clear all hooks or hooks for a specific event.
List all registered hooks.
Enable a specific hook.
Disable a specific hook.
Set the global timeout for all hooks.
## Usage
```python theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
registry = HookRegistry()
# Register a function hook using decorator
@registry.on(HookEvent.BEFORE_TOOL)
def validate_tool(event_data):
if event_data.tool_name == "dangerous":
return HookResult.deny("Tool is dangerous")
return HookResult.allow()
# Register a command hook
registry.register_command(
event=HookEvent.BEFORE_TOOL,
command="python /path/to/validator.py",
matcher="write_*"
)
```
## Source
`praisonaiagents/hooks/registry.py` at line 19
***
## Related Documentation