Loop Steps | Agno

Parameter	Type	Default	Description
`steps`	`WorkflowSteps`	Required	Steps to execute in each loop iteration
`name`	`Optional[str]`	`None`	Name of the loop step
`description`	`Optional[str]`	`None`	Description of the loop step
`max_iterations`	`int`	`3`	Maximum number of iterations for the loop
`forward_iteration_output`	`bool`	`False`	If True, each iteration receives the previous iteration's output as input. If False, all iterations receive the original loop input
`end_condition`	`Optional[Union[Callable[[List[StepOutput]], bool], Callable[[List[StepOutput]], Awaitable[bool]], str]]`	`None`	Function or CEL expression string to evaluate if the loop should end
`human_review`	`Optional[HumanReview]`	`None`	All HITL settings in a single config. See HumanReview Config.

HumanReview configuration

Pass these settings inside human_review=HumanReview(...). They are not direct constructor arguments. See HumanReview for the complete configuration and supported combinations.

Parameter	Type	Default	Description
`requires_confirmation`	`bool`	`False`	Pause for user confirmation before starting the loop
`confirmation_message`	`Optional[str]`	`None`	Message shown to user when requesting confirmation
`requires_iteration_review`	`bool`	`False`	Pause after each iteration so the user can review and approve, edit, or reject. See Loop HITL.
`iteration_review_message`	`Optional[str]`	`None`	Message shown to user during iteration review
`on_reject`	`Union[OnReject, str]`	`OnReject.skip`	Action when rejected: `skip`, `cancel`, `retry`
Constructor example (install `agno` first):

from agno.workflow.loop import Loop
from agno.workflow.step import Step
from agno.workflow.types import HumanReview, StepInput, StepOutput

def prepare(step_input: StepInput) -> StepOutput:
    return StepOutput(content=step_input.input)

prepare_step = Step(name="prepare", executor=prepare)
step = Loop(
    steps=[prepare_step], max_iterations=2,
    human_review=HumanReview(requires_confirmation=True),
)

HumanReview configuration

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