trace

trace

Decorator for automatic function tracing with input/output capture.

Uses the global FiddlerClient when client= is not passed. Supports async functions with proper trace isolation per task.

Parameters

Parameter	Type	Required	Default	Description
func	`Callable	None`	✗	None
name	`str	None`	✗	function name
as_type	Literal['span', 'generation', 'chain', 'tool']	✗	span	Span type ('span', 'generation', 'chain', 'tool').
capture_input	bool	✗	True	Capture function arguments as input.
capture_output	bool	✗	True	Capture return value as output.
client	`FiddlerClient	None`	✗	get_client()
model	`str	None`	✗	None
user_id	`str	None`	✗	None
version	`str	None`	✗	None
system	`str	None`	✗	None

Returns

Decorated function.

Return type: Callable