openapi: 3.0.3
info:
  title: Nagios XI REST Config 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: Config
  description: Admin-only endpoints to add, modify, and delete hosts and services.
paths:
  /config/host:
    post:
      tags:
      - Config
      summary: Create Or Update Host
      description: Add or update a Nagios XI host definition. Use `force=1` to skip template-required directives and `applyconfig=1` to immediately apply the running configuration.
      operationId: createOrUpdateHost
      requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              $ref: '#/components/schemas/HostInput'
      responses:
        '200':
          description: Host created or updated.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MutationResult'
        '400':
          description: Missing required directives.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MutationError'
    delete:
      tags:
      - Config
      summary: Delete Host
      operationId: deleteHost
      parameters:
      - name: host_name
        in: query
        required: true
        schema:
          type: string
      - name: applyconfig
        in: query
        schema:
          type: integer
          enum:
          - 0
          - 1
      responses:
        '200':
          description: Host removed.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MutationResult'
  /config/service:
    post:
      tags:
      - Config
      summary: Create Or Update Service
      operationId: createOrUpdateService
      requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              $ref: '#/components/schemas/ServiceInput'
      responses:
        '200':
          description: Service created or updated.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MutationResult'
    delete:
      tags:
      - Config
      summary: Delete Service
      operationId: deleteService
      parameters:
      - name: host_name
        in: query
        required: true
        schema:
          type: string
      - name: service_description
        in: query
        required: true
        schema:
          type: string
      - name: applyconfig
        in: query
        schema:
          type: integer
          enum:
          - 0
          - 1
      responses:
        '200':
          description: Service removed.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MutationResult'
components:
  schemas:
    MutationError:
      type: object
      properties:
        error:
          type: string
          example: Missing required variables
        missing:
          type: array
          items:
            type: string
    MutationResult:
      type: object
      properties:
        success:
          type: string
          example: Removed web01 from the system. Config applied, Nagios Core was restarted.
    ServiceInput:
      type: object
      required:
      - host_name
      - service_description
      properties:
        host_name:
          type: string
        service_description:
          type: string
        use:
          type: string
          example: xiwizard_website_ping_service
        check_command:
          type: string
        max_check_attempts:
          type: integer
        check_interval:
          type: number
        retry_interval:
          type: number
        notification_interval:
          type: number
        check_period:
          type: string
        notification_period:
          type: string
        contacts:
          type: string
        contact_groups:
          type: string
        force:
          type: integer
          enum:
          - 0
          - 1
        applyconfig:
          type: integer
          enum:
          - 0
          - 1
    HostInput:
      type: object
      required:
      - host_name
      - address
      properties:
        host_name:
          type: string
          example: web01
        address:
          type: string
          example: 10.0.0.5
        use:
          type: string
          example: xiwizard_generic_host
          description: Template to inherit from.
        max_check_attempts:
          type: integer
        check_interval:
          type: number
        retry_interval:
          type: number
        check_period:
          type: string
        notification_interval:
          type: number
        notification_period:
          type: string
        contacts:
          type: string
        contact_groups:
          type: string
        force:
          type: integer
          enum:
          - 0
          - 1
          description: When 1, bypass the missing-directive check (rely on template values).
        applyconfig:
          type: integer
          enum:
          - 0
          - 1
          description: When 1, apply the configuration immediately after writing.
  securitySchemes:
    ApiKeyQuery:
      type: apiKey
      in: query
      name: apikey
    ApiKeyHeader:
      type: apiKey
      in: header
      name: X-API-KEY