[Home](./index.md) > [@datashaper/schema](./schema.md) > [VariadicInput](./schema.variadicinput.md) ## VariadicInput interface Multi-input, single output step I/O Signature: ```typescript export interface VariadicInput ``` ## Properties | Property | Modifiers | Type | Description | | --- | --- | --- | --- | | [input](./schema.variadicinput.input.md) | | { source: [WorkflowInput](./schema.workflowinput.md); others?: [WorkflowInput](./schema.workflowinput.md)\[\]; } | The step inputs; a required "source" and optional, variadic "others". If this is a string, it is used to bind the primary input. |