Nagios System API

openapi: 3.0.3
info:
  title: Nagios XI REST Config System API
  description: 'Built-in REST API for Nagios XI, the commercial enterprise distribution of

    Nagios. The API is split into three sections: Objects (read-only backend for

    hosts, services, contacts, host groups, etc.), Config (admin-only writes for

    hosts and services), and System (admin-only commands such as apply

    configuration, scheduled downtime, status). Responses are returned as JSON

    when `pretty=1` or by default. Authentication uses a per-user Nagios XI API

    key passed via the `apikey` query parameter.

    '
  version: v1
  contact:
    name: Nagios Enterprises
    url: https://www.nagios.com/products/nagios-xi/
  license:
    name: Nagios XI Commercial License
    url: https://www.nagios.com/legal/agreements/
servers:
- url: https://{nagiosXiHost}/nagiosxi/api/v1
  description: Self-hosted Nagios XI instance
  variables:
    nagiosXiHost:
      default: nagios.example.com
      description: Hostname or IP address of the Nagios XI server
security:
- ApiKeyQuery: []
- ApiKeyHeader: []
tags:
- name: System
  description: Admin-only endpoints to manage Nagios XI subsystems, apply configuration, schedule downtime, and execute commands.
paths:
  /system/status:
    get:
      tags:
      - System
      summary: Get System Status
      operationId: getSystemStatus
      parameters:
      - $ref: '#/components/parameters/Pretty'
      responses:
        '200':
          description: Current Nagios XI process status.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SystemStatus'
  /system/applyconfig:
    post:
      tags:
      - System
      summary: Apply Configuration
      description: Run Apply Configuration to validate and restart Nagios with any pending object changes.
      operationId: applyConfig
      responses:
        '200':
          description: Apply configuration triggered.
  /system/scheduleddowntime:
    post:
      tags:
      - System
      summary: Schedule Downtime
      operationId: scheduleDowntime
      requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              type: object
              properties:
                comment:
                  type: string
                start:
                  type: integer
                  format: int64
                  description: Unix timestamp.
                end:
                  type: integer
                  format: int64
                hosts[]:
                  type: array
                  items:
                    type: string
                services[host][]:
                  type: array
                  items:
                    type: string
      responses:
        '200':
          description: Downtime scheduled.
  /system:
    get:
      tags:
      - System
      summary: Get System Information
      operationId: getSystem
      parameters:
      - $ref: '#/components/parameters/Token'
      responses:
        '200':
          description: Host system info.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MetricResponse'
  /system/agent_version:
    get:
      tags:
      - System
      summary: Get Agent Version
      operationId: getAgentVersion
      parameters:
      - $ref: '#/components/parameters/Token'
      responses:
        '200':
          description: NCPA agent version.
components:
  schemas:
    MetricResponse:
      type: object
      additionalProperties:
        type: array
        description: '[value, "unit"] pair returned per metric.'
        minItems: 2
        maxItems: 2
        items: {}
    SystemStatus:
      type: object
      properties:
        instance_id:
          type: string
        instance_name:
          type: string
        status_update_time:
          type: string
          format: date-time
        program_start_time:
          type: string
          format: date-time
        program_run_time:
          type: string
        is_currently_running:
          type: integer
          enum:
          - 0
          - 1
        process_id:
          type: string
        daemon_mode:
          type: integer
          enum:
          - 0
          - 1
        notifications_enabled:
          type: integer
          enum:
          - 0
          - 1
        active_service_checks_enabled:
          type: integer
          enum:
          - 0
          - 1
        passive_service_checks_enabled:
          type: integer
          enum:
          - 0
          - 1
        active_host_checks_enabled:
          type: integer
          enum:
          - 0
          - 1
        passive_host_checks_enabled:
          type: integer
          enum:
          - 0
          - 1
        event_handlers_enabled:
          type: integer
          enum:
          - 0
          - 1
        flap_detection_enabled:
          type: integer
          enum:
          - 0
          - 1
        process_performance_data:
          type: integer
          enum:
          - 0
          - 1
  parameters:
    Token:
      name: token
      in: query
      required: true
      schema:
        type: string
      description: NCPA community_string token from agent config.
    Pretty:
      name: pretty
      in: query
      schema:
        type: integer
        enum:
        - 0
        - 1
        default: 0
      description: Set to 1 to return human-readable formatted JSON.
  securitySchemes:
    ApiKeyQuery:
      type: apiKey
      in: query
      name: apikey
    ApiKeyHeader:
      type: apiKey
      in: header
      name: X-API-KEY