--- title: "echo" slug: "debug-echo" updated: 2025-11-06T18:29:02Z published: 2025-11-06T18:29:02Z canonical: "docs.doc-know.com/debug-echo" --- > ## Documentation Index > Fetch the complete documentation index at: https://docs.doc-know.com/llms.txt > Use this file to discover all available pages before exploring further. # echo ### echo Responds with a simple echo message. ### Input Parameters | Name | Type | Required | Description | | --- | --- | --- | --- | | **message** | Text | Yes | Input message | ### Returns Type: **Text** Returns a message that is the exact same as the provided input message except with an 'Echo:' prefix. ### Examples ``` // observe 'Echo: hello' in the debugger var response = debug.echo("hello"); debug.log(response); ``` ### Remarks This is not a very useful function, but can be used to test basic communications with the app runtime.