How do I return file in current implementation?

[vshapenko]

Hello! Just checked the docs and tests and did not find any sample on how I can return file as tool answer, for example. Could anyone shed some light on it?

[stephentoub]

There are a variety of ways, but probably the easiest is to just return a Microsoft.Extensions.AI.DataContent, e.g.

[McpServerTool]
public static DataContent GetMyImage()
{
    byte[] bytes = File.ReadAllBytes("path/to/my/image.png");
    return new DataContent(bytes, "image/png");
}

[vshapenko]

Thanks a lot, will try