How to return csv format for some tools

[andrew-vdb]

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Your Question

When the tool return complex type, by default it return in json format, how to return the data in csv format? Before i make each converter on each tool or is there centralised place to it like CallToolHandler?

[PederHP]

I would suggest returning as string and doing the conversion in your tool. With the current spec, clients have poor to no support for non-json structured output.

It's perfectly valid to use the "old" string-based content mechanism. It is not deprecated or legacy tool format. It gives you full control of what is sent to the model. For a csv returning tool I think it's the right choice.

[andrew-vdb]

yes it will return string, the question is is there centralize location where i can do the conversion? gut feeling it should be aspnet core part but i'm not sure at this moment