openapi: 3.1.0
info:
  title: Rockwell FactoryTalk Optix REST Alarms API
  description: Rockwell Automation FactoryTalk Optix REST API provides programmatic access to HMI and SCADA visualization applications, enabling external system integration, tag read/write, alarm management, and runtime control of FactoryTalk Optix applications deployed in industrial automation environments.
  version: 1.5.0
  contact:
    name: Rockwell Automation Support
    url: https://www.rockwellautomation.com/en-us/support/
  license:
    name: Rockwell Automation Software License
    url: https://www.rockwellautomation.com/en-us/company/about-us/legal-notices/
servers:
- url: https://{host}/api/v1
  description: FactoryTalk Optix REST API
  variables:
    host:
      default: optix.example.com
      description: FactoryTalk Optix server hostname
security:
- oauth2: []
- apiKey: []
tags:
- name: Alarms
  description: Alarm and event management
paths:
  /alarms:
    get:
      operationId: listAlarms
      summary: List Active Alarms
      description: Returns currently active and unacknowledged alarms.
      tags:
      - Alarms
      parameters:
      - name: status
        in: query
        description: Filter by alarm status
        schema:
          type: string
          enum:
          - ACTIVE
          - ACKNOWLEDGED
          - NORMAL
      - name: severity
        in: query
        description: Minimum severity to return
        schema:
          type: string
          enum:
          - LOW
          - MEDIUM
          - HIGH
          - CRITICAL
      - name: limit
        in: query
        schema:
          type: integer
          default: 100
      - name: offset
        in: query
        schema:
          type: integer
          default: 0
      responses:
        '200':
          description: Active alarm list
          content:
            application/json:
              schema:
                type: object
                properties:
                  alarms:
                    type: array
                    items:
                      $ref: '#/components/schemas/Alarm'
                  totalCount:
                    type: integer
        '401':
          $ref: '#/components/responses/Unauthorized'
  /alarms/{alarmId}/acknowledge:
    post:
      operationId: acknowledgeAlarm
      summary: Acknowledge an Alarm
      description: Acknowledges an active alarm, optionally with a comment.
      tags:
      - Alarms
      parameters:
      - name: alarmId
        in: path
        required: true
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                comment:
                  type: string
                  description: Acknowledgment comment
      responses:
        '200':
          description: Alarm acknowledged
        '404':
          $ref: '#/components/responses/NotFound'
  /alarms/history:
    get:
      operationId: getAlarmHistory
      summary: Get Alarm History
      description: Returns historical alarm events within a time range.
      tags:
      - Alarms
      parameters:
      - name: startTime
        in: query
        required: true
        schema:
          type: string
          format: date-time
      - name: endTime
        in: query
        required: true
        schema:
          type: string
          format: date-time
      - name: tagName
        in: query
        description: Filter to specific tag
        schema:
          type: string
      - name: limit
        in: query
        schema:
          type: integer
          default: 500
      responses:
        '200':
          description: Alarm history
          content:
            application/json:
              schema:
                type: object
                properties:
                  alarmEvents:
                    type: array
                    items:
                      $ref: '#/components/schemas/AlarmEvent'
components:
  schemas:
    AlarmEvent:
      type: object
      properties:
        eventId:
          type: string
        alarmId:
          type: string
        tagName:
          type: string
        alarmName:
          type: string
        eventType:
          type: string
          enum:
          - ACTIVATED
          - ACKNOWLEDGED
          - RESET
          - DISABLED
        timestamp:
          type: string
          format: date-time
        value:
          description: Tag value at event time
        user:
          type: string
          nullable: true
        comment:
          type: string
          nullable: true
    Alarm:
      type: object
      description: An active alarm condition
      properties:
        alarmId:
          type: string
        tagName:
          type: string
        alarmName:
          type: string
        description:
          type: string
        status:
          type: string
          enum:
          - ACTIVE
          - ACKNOWLEDGED
          - NORMAL
        severity:
          type: string
          enum:
          - LOW
          - MEDIUM
          - HIGH
          - CRITICAL
        activationTime:
          type: string
          format: date-time
        acknowledgmentTime:
          type: string
          format: date-time
          nullable: true
        acknowledgedBy:
          type: string
          nullable: true
        triggerValue:
          description: Tag value when alarm activated
        setpoint:
          description: Alarm setpoint/threshold value
    Error:
      type: object
      properties:
        code:
          type: string
        message:
          type: string
        details:
          type: string
  responses:
    Unauthorized:
      description: Authentication required
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    NotFound:
      description: Resource not found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  securitySchemes:
    oauth2:
      type: oauth2
      flows:
        clientCredentials:
          tokenUrl: https://optix.example.com/auth/token
          scopes:
            optix.read: Read tag values and alarm data
            optix.write: Write tag values
            optix.admin: Manage recipes and project configuration
    apiKey:
      type: apiKey
      in: header
      name: X-Api-Key
      description: FactoryTalk Optix API key