openapi: 3.1.0
info:
  title: OPNsense REST Core Diagnostics API
  description: 'REST API for OPNsense, an open source FreeBSD-based firewall and routing platform.

    The API follows a uniform URL pattern:

    `/api/<module>/<controller>/<command>/[<param1>/<param2>/...]`

    and uses HTTP Basic Authentication where the API key is supplied as the

    username and the API secret as the password.


    Only GET and POST verbs are used: GET retrieves data, POST creates,

    updates, or executes actions.

    '
  version: 1.0.0
  contact:
    name: OPNsense
    url: https://opnsense.org
  license:
    name: BSD 2-Clause
    url: https://opensource.org/licenses/BSD-2-Clause
servers:
- url: https://{host}/api
  description: OPNsense host API base path
  variables:
    host:
      default: opnsense.local
      description: Hostname or IP of the OPNsense firewall
security:
- basicAuth: []
tags:
- name: Diagnostics
  description: Interface and system diagnostics.
paths:
  /diagnostics/interface/getInterfaceNames:
    get:
      tags:
      - Diagnostics
      summary: List interface names
      description: Returns the list of available network interface names.
      operationId: getInterfaceNames
      responses:
        '200':
          description: Map of interface device names.
          content:
            application/json:
              schema:
                type: object
                additionalProperties:
                  type: string
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  responses:
    Unauthorized:
      description: Authentication failed or missing.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  schemas:
    ErrorResponse:
      type: object
      properties:
        status:
          type: string
        message:
          type: string
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic
      description: 'HTTP Basic Authentication with the API key as username and the

        API secret as password.

        '
externalDocs:
  description: OPNsense API Documentation
  url: https://docs.opnsense.org/development/api.html