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# LoopProgress - ComfyUI Built-in Node Documentation

> LoopProgress is a development-only helper node that reports the progress of a loop to the ComfyUI server interface.

LoopProgress is a development-only helper node that reports the progress of a loop to the ComfyUI server interface. On each execution it sends the text "Iteration X / Y" to the client and returns the current iteration position unchanged, which allows it to sit inline inside a loop without altering the data flow.

## Inputs

| Parameter | Description | Data Type | Required | Range |
| - | - | - | - | - |
| `start_id` | Identifier of the prompt/loop instance the progress message belongs to. The first item of the supplied list is used to route the progress text to the correct running execution. | STRING | Yes | - |
| `position` | The current iteration position (index). The first item of the supplied list is used in the progress message and is also returned as the output. | INT | Yes | - |
| `total` | The total number of iterations. Used together with `position` to build the "Iteration X / Y" progress message. | INT | Yes | - |

Note: this node is declared with list inputs (`is_input_list=True`) and accepts all inputs, so each connected value is treated as a list and only its first element is read. The node always runs (its input fingerprint is fixed), so it re-executes on every loop pass.

## Outputs

| Output Name | Description | Data Type |
| - | - | - |
| `position` | The current iteration position, passed through unchanged from the `position` input. | INT |

> This documentation was AI-generated. If you find any errors or have suggestions for improvement, please feel free to contribute! [Edit on GitHub](https://github.com/Comfy-Org/embedded-docs/blob/main/comfyui_embedded_docs/docs/LoopProgress/en.md)

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