feature: withAny tool argument

[0xNF]

Problem Statement

There's no way to specify that a tool argument can be any shape. withNumber, withBoolean, withArray, withObject, withString exist, but there's nothing for a schema-less type.

Proposed Solution

JSON Schema defines the any type as an empty object:

"properties": {
        "F1": {
            "type": "string"
        },
        "F2": {
            "type": "integer"
        },
        "F3": {}
    },

where F3 is any.

I'd like to see a withAny tool argument method.

Example Usage

	tool := mcp.NewTool(
		toolName,
		mcp.WithDescription(toolDescription),
		mcp.WithAny("freeEntry"),
	)

[pottekkat]

Thank for opening this issue. This seems like a valid request. You can currently use the workaround with NewToolWithRawSchema() but this means you have to define the whole schema manually. But the WithAny helper function can be added.

[1garo]

@pottekkat I would like to contribute, could I start from this one?

[pottekkat]

Thank you @1garo. Feel free to open a pull request.