> ## 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.
# After Tool • AI Agent SDK
> after_tool: Decorator to mark a function as an after_tool hook.
# after\_tool
Function
> This function is defined in the [**middleware**](../modules/middleware) module.
Decorator to mark a function as an after\_tool hook.
The function receives a ToolResponse and should return a (possibly modified) ToolResponse.
```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 LR
agent["Agent"] -- "uses" --> tool["Tool: after_tool"]
tool -- "returns" --> result["Result"]
style tool fill:#189AB4,color:#fff
style agent fill:#8B0000,color:#fff
style result fill:#8B0000,color:#fff
```
## Signature
```python theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
def after_tool(func: AfterToolFn) -> AfterToolFn
```
## Parameters
No description available.
### Returns
The result of the operation.
## Usage
```python theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
@after_tool
def log_result(response):
print(f"Tool {response.tool_name} returned: {response.result}")
return response
```
## Source
`praisonaiagents/hooks/middleware.py` at line 257
***
## Related Documentation