openapi: 3.2.0
info:
  title: Cosmose AI Deal Hunter Registration Token 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: token-controller
paths:
  /v2/token:
    post:
      tags:
      - token-controller
      operationId: generateTokens
      parameters:
      - name: Installation-Id
        in: header
        required: false
        schema:
          type: string
          default: ''
      - name: refresh_token
        in: query
        required: false
        schema:
          type: string
          default: ''
      - name: scope
        in: query
        required: false
        schema:
          type: string
          default: kaikai
      - name: grant_type
        in: query
        required: true
        schema:
          type: string
      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/TokenInfo'
components:
  schemas:
    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
    TokenInfo:
      type: object
      properties:
        access_token:
          type: string
        refresh_token:
          type: string
        type:
          type: string
        expires_in:
          type: integer
          format: int32
  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