mac-use-mcp

Instructions

Implementation Reference

• src/tools/screen.ts:70-94 (handler)

  The handler function that executes the get_screen_info tool logic by invoking the Swift helper and formatting the output.

  async function handleGetScreenInfo(): Promise<CallToolResult> {
    const response = await runInputHelper("display_info", {});
    const { displays: rawDisplays } = DisplayInfoResponseSchema.parse(response);
  
    const displays: DisplayInfo[] = rawDisplays.map((d) => ({
      name: d.name,
      resolution: { width: d.width, height: d.height },
      origin: { x: d.x, y: d.y },
      scaleFactor: d.scaleFactor,
    }));
  
    const result = {
      displayCount: displays.length,
      displays,
    };
  
    return {
      content: [
        {
          type: "text" as const,
          text: JSON.stringify(result, null, 2),
        },
      ],
    };
  }

• src/tools/screen.ts:19-19 (schema)

  Input validation schema for get_screen_info tool.

  const GetScreenInfoInputSchema = z.object({});

• src/tools/screen.ts:46-55 (registration)

  Registration definition for the get_screen_info tool.

  {
    name: "get_screen_info",
    description:
      "Retrieve display configuration: number of displays, per-display resolution, origin, and scale factor.",
    inputSchema: zodToToolInputSchema(GetScreenInfoInputSchema),
    annotations: {
      readOnlyHint: true,
      destructiveHint: false,
    },
  },