> ## Documentation Index
> Fetch the complete documentation index at: https://agno-v2.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# StepInput

> Fields and helper methods on the StepInput object passed to each workflow step.

| Parameter | Type | Description |
| - | - | - |
| `input` | `Optional[Union[str, Dict[str, Any], List[Any], BaseModel]]` | Primary input message (can be any format) |
| `previous_step_content` | `Optional[Any]` | Content from the last step |
| `previous_step_outputs` | `Optional[Dict[str, StepOutput]]` | All previous step outputs by name |
| `additional_data` | `Optional[Dict[str, Any]]` | Additional context data |
| `images` | `Optional[List[Image]]` | Media inputs - images (accumulated from workflow input and previous steps) |
| `videos` | `Optional[List[Video]]` | Media inputs - videos (accumulated from workflow input and previous steps) |
| `audio` | `Optional[List[Audio]]` | Media inputs - audio (accumulated from workflow input and previous steps) |
| `files` | `Optional[List[File]]` | File inputs (accumulated from workflow input and previous steps) |
| `workflow_session` | `Optional[WorkflowSession]` | The workflow session, used by the workflow history helpers |

## Helper Functions

| Method | Return Type | Description |
| - | - | - |
| `get_input_as_string()` | `Optional[str]` | Convert the primary input to a string |
| `get_step_output(step_name: str)` | `Optional[StepOutput]` | Get the complete StepOutput object from a specific step by name |
| `get_step_content(step_name: str)` | `Optional[Any]` | Get content from a specific step by name |
| `get_all_previous_content()` | `str` | Get all previous step content combined |
| `get_last_step_content()` | `Optional[Any]` | Get content from the immediate previous step |
| `get_workflow_history(num_runs: Optional[int] = None)` | `List[Tuple[str, str]]` | Get the workflow history as a list of tuples |
| `get_workflow_history_context(num_runs: Optional[int] = None)` | `Optional[str]` | Get the workflow history as a formatted context string |


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