openapi: 3.2.0
info:
  title: Cosmose AI Deal Hunter Registration Registration Controller API
  description: Public registration, onboarding, invitation and account-lifecycle API behind Cosmose AI's KaiKai / Deal Hunter consumer app and its merchant and school lead-capture forms. Harvested verbatim from the provider's live springdoc endpoint at https://api.sg.cosmose.co/deal-hunter-registration-api/v3/api-docs; the only change in this refined copy is the servers[] block, which upstream advertises the internal cluster service name http://deal-hunter-registration-api/deal-hunter-registration-api instead of the reachable public gateway. See overlays/cosmose-ai-deal-hunter-registration-api-overlay.yaml for the exact delta.
  version: v0
  x-harvested-from: https://api.sg.cosmose.co/deal-hunter-registration-api/v3/api-docs
  x-upstream-info:
    title: OpenAPI definition
    version: v0
servers:
- url: https://api.sg.cosmose.co/deal-hunter-registration-api
  description: Singapore production gateway (observed reachable, HTTP 200 on /v3/api-docs)
security:
- bearerAuth: []
tags:
- name: registration-controller
paths:
  /v1/registration:
    post:
      tags:
      - registration-controller
      operationId: registerNewUserWithoutCode
      parameters:
      - name: Operating-System
        in: header
        required: false
        schema:
          type: string
      requestBody:
        content:
          application/vnd.cosmose.registration-without-code+json:
            schema:
              $ref: '#/components/schemas/RegisterNewUserNoCodeDto'
        required: true
      responses:
        '400':
          description: Bad Request
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/ErrorDto'
        '404':
          description: Not Found
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/ErrorDto'
        '403':
          description: Forbidden
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/ErrorDto'
        '200':
          description: OK
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/UserRegisteredDto'
  /v1/registration/wait-list:
    post:
      tags:
      - registration-controller
      operationId: registerNewUserWithoutCodeOnTheWaitingList
      parameters:
      - name: Operating-System
        in: header
        required: false
        schema:
          type: string
      requestBody:
        content:
          application/vnd.cosmose.registration-without-code+json:
            schema:
              $ref: '#/components/schemas/RegisterNewUserNoCodeDto'
        required: true
      responses:
        '400':
          description: Bad Request
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/ErrorDto'
        '404':
          description: Not Found
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/ErrorDto'
        '403':
          description: Forbidden
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/ErrorDto'
        '200':
          description: OK
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/UserRegisteredDto'
      deprecated: true
  /v1/registration/unsubscribe:
    post:
      tags:
      - registration-controller
      operationId: unsubscribe
      parameters:
      - name: unsubscribeDto
        in: query
        required: true
        schema:
          $ref: '#/components/schemas/UnsubscribeDto'
      responses:
        '400':
          description: Bad Request
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/ErrorDto'
        '404':
          description: Not Found
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/ErrorDto'
        '403':
          description: Forbidden
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/ErrorDto'
        '200':
          description: OK
  /v1/registration/confirmed:
    get:
      tags:
      - registration-controller
      operationId: getNumberOfConfirmedRegistrations
      responses:
        '400':
          description: Bad Request
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/ErrorDto'
        '404':
          description: Not Found
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/ErrorDto'
        '403':
          description: Forbidden
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/ErrorDto'
        '200':
          description: OK
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/ConfirmedUsersDto'
components:
  schemas:
    UnsubscribeDto:
      type: object
      properties:
        from:
          type: string
        body:
          type: string
    UserRegisteredDto:
      type: object
      properties:
        registeredUserStatus:
          type: string
          enum:
          - APPROVED
          - WAITING_LIST
        newUser:
          type: boolean
    ConfirmedUsersDto:
      type: object
      properties:
        value:
          type: integer
          format: int64
    ErrorDto:
      type: object
      properties:
        errorCode:
          type: string
          enum:
          - BAD_REQUEST
          - CODE_EXCEEDED
          - CODE_NOT_FOUND
          - USER_ALREADY_REGISTERED
          - USER_NOT_FOUND
          - FORBIDDEN
          - MAX_RESETS_EXCEEDED
          - INVITATION_DAILY_LIMIT_EXCEEDED
          - EMAIL_ALREADY_TAKEN
        message:
          type: string
    RegisterNewUserNoCodeDto:
      required:
      - mobileNumber
      type: object
      properties:
        mobileNumber:
          pattern: ^\+?[\d \-]{8,17}$
          type: string
        sendBestDeals:
          type: boolean
        source:
          type: string
        utmSource:
          type: string
        registrationItemId:
          type: string
        url:
          type: string
  securitySchemes:
    bearerAuth:
      type: http
      name: bearerAuth
      scheme: bearer
      bearerFormat: JWT
x-evidence:
  fetched: '2026-08-11'
  url: https://api.sg.cosmose.co/deal-hunter-registration-api/v3/api-docs
  http_status: 200
  content_type: application/json