---
title: Run Flow
slug: /run-flow
---

import Icon from "@site/src/components/icon";
import PartialParams from '@site/docs/_partial-hidden-params.mdx';

The **Run Flow** component runs another Langflow flow as a subprocess of the current flow.

You can use this component to chain flows together, run flows conditionally, and attach flows to [**Agent** components](/components-agents) as [tools for agents](/agents-tools) to run as needed.

When used with an agent, the `name` and `description` metadata that the agent uses to register the tool are created automatically.

When you select a flow for the **Run Flow** component, it uses the target flow's graph structure to dynamically generate input and output fields on the **Run Flow** component.

## Run Flow parameters

<PartialParams />

| Name              | Type     | Description                                                    |
|-------------------|----------|----------------------------------------------------------------|
| flow_name_selected| Dropdown | Input parameter. The name of the flow to run.                  |
| session_id        | String   | Input parameter. The session ID for the flow run, if you want to pass a custom session ID for the subflow. |
| flow_tweak_data   | Dict     | Input parameter. Dictionary of tweaks to customize the flow's behavior. Available tweaks depend on the selected flow. |
| dynamic inputs    | Various  | Input parameter. Additional inputs are generated based on the selected flow. |
| run_outputs  | A `List` of types (`Data`, `Message`, or `DataFrame`)  | Output parameter. All outputs are generated from running the flow.  |