MCP Printer Server

Instructions

Implementation Reference

• src/tools/printer.ts:111-126 (handler)

  The async handler function that implements the core logic of the get_print_queue tool. It constructs arguments for the 'lpq' command based on the optional printer input and executes it to retrieve the print queue status.

  async ({ printer }) => {
    const lpqArgs: string[] = []
    if (printer) {
      lpqArgs.push("-P", printer)
    }
  
    const output = await execCommand("lpq", lpqArgs)
    return {
      content: [
        {
          type: "text",
          text: output || "No print jobs in queue",
        },
      ],
    }
  }

• src/tools/printer.ts:104-109 (schema)

  The Zod input schema definition for the get_print_queue tool, specifying an optional 'printer' parameter.

  inputSchema: {
    printer: z
      .string()
      .optional()
      .describe("Printer name to check queue for (optional, checks all if not specified)"),
  },

• src/tools/printer.ts:98-127 (registration)

  The complete registration of the get_print_queue tool with the MCP server using server.registerTool, including name, metadata (title, description), input schema, and handler function.

  server.registerTool(
    "get_print_queue",
    {
      title: "Get Print Queue",
      description:
        "Check the print queue for a specific printer or all printers. Shows pending and active print jobs.",
      inputSchema: {
        printer: z
          .string()
          .optional()
          .describe("Printer name to check queue for (optional, checks all if not specified)"),
      },
    },
    async ({ printer }) => {
      const lpqArgs: string[] = []
      if (printer) {
        lpqArgs.push("-P", printer)
      }
  
      const output = await execCommand("lpq", lpqArgs)
      return {
        content: [
          {
            type: "text",
            text: output || "No print jobs in queue",
          },
        ],
      }
    }
  )