# set\_span\_attributes

Set custom attributes on a Model or AgentTool that can be accessed by logging hooks.

This function stores key-value pairs as attributes on the object, making them accessible to hooks during model invocation events. Attributes are automatically scoped to async or sync contexts.

## Parameters

| Parameter | Type    | Required    | Default | Description |
| --------- | ------- | ----------- | ------- | ----------- |
| `obj`     | \`Model | AgentTool\` | ✗       | `None`      |

## Example

```python
from strands.models.openai import OpenAIModel
from fiddler_strandsagents import set_span_attributes

model = OpenAIModel(api_key="...", model_id="gpt-4")
set_span_attributes(model, model_id="gpt-4", temperature=0.7)
```