> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ontime.hosai.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Check a serial before registering it (connector sighting

> Check a serial before registering it (connector sighting lookup)



## OpenAPI

````yaml /api-reference/openapi.json get /api/devices/verify
openapi: 3.1.0
info:
  title: ontime API
  description: APIs for ontime.v2
  version: 1.0.0
servers:
  - url: https://app.ontime.hosai.app
    description: Production
security:
  - apiKey: []
paths:
  /api/devices/verify:
    get:
      tags:
        - Devices
      summary: Check a serial before registering it (connector sighting
      description: Check a serial before registering it (connector sighting lookup)
      operationId: getApiDevicesVerify
      parameters:
        - in: query
          name: serial
          schema:
            type: string
            minLength: 1
          required: true
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: string
                    enum:
                      - seen
                      - unseen
                      - taken
                  terminalType:
                    anyOf:
                      - type: string
                      - type: 'null'
                  firstSeenAt:
                    anyOf:
                      - type: string
                      - type: 'null'
                  lastSeenAt:
                    anyOf:
                      - type: string
                      - type: 'null'
                  messageCount:
                    type: integer
                    minimum: -9007199254740991
                    maximum: 9007199254740991
                required:
                  - status
                  - terminalType
                  - firstSeenAt
                  - lastSeenAt
                  - messageCount
components:
  securitySchemes:
    apiKey:
      type: http
      scheme: bearer
      bearerFormat: ont_ API key
      description: >-
        Issue keys in Settings → API. Send them as `Authorization: Bearer ont_…`
        (an `X-Api-Key: ont_…` header is also accepted). Session-cookie routes
        are used by the OnTime web apps and are shown for completeness.

````