ThingWorx MCP

I confirm. TWX 10.1.0 it works and with 10.1.1 fails with specified error. toolName seems to be required on 10.1.1 but not defined in DS.

Workaround adding Tool it via service call:

let mcpTools = Resources["InfoTableFunctions"].CreateInfoTableFromDataShape({
	infoTableName: "InfoTable",
	dataShapeName: "MCPTool"
});
// manually add the attribute to the infotable
mcpTools.AddField({
	name: "toolName",
	baseType: 'STRING'
});
mcpTools.AddRow({
	serviceProvider: "<YOURTHINGNAME>",
	serviceProviderType: "Thing",
	serviceName: "<SERVICENAME>",
	description: "<DESCRIPTION>",
	toolName: "<TOOLNAME>",
	title: undefined,
	appName: undefined,
	meta: undefined,
	annotations: undefined,
	inputSchema: undefined,
	outputSchema: undefined
});

result = Resources["MCPServices"].AddTools({
	toolInfo: mcpTools
});

With that it adds the tool and is returned on GetAllTools. Did not try to invoke it via MCP yet.

Great find!  I was able to replicate this and use the AddTool service.  I think you should mark your reply above as the answer. 

Hopefully this bug will be fixed when the capability is released in GA.  The part that is confusing is that the service works fine in the demo video below, about 7:30 mark. 

UPDATE: Checked the help center use cases doc again and noticed no mention of “Tool Name” either. https://support.ptc.com/help/thingworx/platform/r10.1/en/#page/ThingWorx/Help/ArtificialIntelligence/SampleUseCases.html