unreal-mcp

Instructions

Implementation Reference

• server/index.ts:94-112 (registration)

  Registration of the 'set_unreal_project_path' tool, including input schema (path: string) and inline handler that sets the global projectPath variable and returns a confirmation message.

  server.tool(
  	"set_unreal_project_path",
  	"Set the Project path",
  	{
  		path: z.string(),
  	},
  	async ({ path }) => {
  		projectPath = path
  
  		return {
  			content: [
  				{
  					type: "text",
  					text: `Project path set to ${path}`,
  				},
  			],
  		}
  	},
  )

• server/index.ts:100-111 (handler)

  Handler function that stores the input path in the projectPath variable and responds with a text message confirming the path was set.

  async ({ path }) => {
  	projectPath = path
  
  	return {
  		content: [
  			{
  				type: "text",
  				text: `Project path set to ${path}`,
  			},
  		],
  	}
  },

• server/index.ts:97-99 (schema)

  Input schema for the tool using Zod: requires a 'path' string parameter.

  {
  	path: z.string(),
  },

• server/index.ts:23-24 (helper)

  Global variables used by the tool handlers to store engine and project paths persistently.

  let enginePath: string | undefined = undefined
  let projectPath: string | undefined = undefined