> ## Documentation Index
> Fetch the complete documentation index at: https://learn.workflow.dog/llms.txt
> Use this file to discover all available pages before exploring further.

# Callable Workflow

> Select a callable workflow and expose it as a value.

**Callable Workflow** lets the workflow choose which sub-workflow another
action should run. Connect its output to **Run Workflow**, **Loop Workflow**,
or another action that accepts a workflow value.

## Input

| Input        | Type     | Required | Description                          |
| ------------ | -------- | -------- | ------------------------------------ |
| **Workflow** | Workflow | Yes      | A callable workflow in this project. |

## Output

| Output       | Type     | Description                                |
| ------------ | -------- | ------------------------------------------ |
| **Workflow** | Workflow | The selected workflow, including its name. |

The server verifies that the workflow exists in the current project.