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OpenAPI Specification

openapi: 3.2.0
info:
  title: Nine Fives Programmable REST Attenuator System API
  version: '1.0'
  description: JSON REST API served on port 80 by the Nine Fives POE-ATTEN-6G programmable RF attenuator for programmatic control and monitoring. Faithfully transcribed from the published device reference manual; the device also exposes SCPI over raw TCP (port 5025) and HiSLIP (port 4880). No authentication is required — the API is served directly by the device over the local network (Ethernet or USB-C).
  contact:
    name: Nine Fives
    url: https://ninefives.com
  x-generated: '2026-07-20'
  x-method: generated
  x-source: https://docs.ninefives.com/attenuator/rest-api/overview/
servers:
- url: http://{deviceIp}
  description: Device-hosted API on port 80 (default Ethernet fallback IP 192.168.0.95, USB-C 192.168.42.95)
  variables:
    deviceIp:
      default: 192.168.0.95
      description: The IP address of the attenuator device on the local network
tags:
- name: System
  description: Device status and reboot
paths:
  /api/system/status:
    get:
      operationId: getSystemStatus
      tags:
      - System
      summary: Get complete system status
      description: Returns complete system status information including device name, model, serial, connection status, and temperature.
      responses:
        '200':
          description: System status
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SystemStatus'
  /api/system/reboot:
    post:
      operationId: rebootSystem
      tags:
      - System
      summary: Reboot the device
      description: Reboots the device. The device will be unreachable for approximately 30 seconds.
      responses:
        '200':
          description: Reboot acknowledged
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/StatusMessage'
components:
  schemas:
    StatusMessage:
      type: object
      properties:
        status:
          type: string
        message:
          type: string
    SystemStatus:
      type: object
      properties:
        device:
          type: string
          description: Device name
        hostname:
          type: string
          description: System hostname
        model:
          type: string
          description: Device model identifier
        serial:
          type: string
          description: Serial number
        status:
          type: string
          description: 'Connection status: Connected via eth, Connected via usb, or Disconnected'
        temperature:
          type: number
          description: Device temperature in °C
        connectedIface:
          type: string
          description: Network interface the client is connected through (eth0 or usb0)