Involve Asia Deeplink API

openapi: 3.1.0
info:
  title: Involve Asia Publisher Auth Deeplink API
  version: v2
  description: 'Public-facing Publisher API. Bearer JWT auth (2 hours TTL). Throttle: 60 requests / minute per account.'
  license:
    name: Proprietary — Involve Asia
    url: https://involve.asia/
servers:
- url: https://api.involve.asia/api
security:
- bearerAuth: []
tags:
- name: Deeplink
paths:
  /deeplink/generate:
    post:
      operationId: deeplink
      summary: Generate deeplink
      description: Convert a destination URL into a trackable affiliate link. Capped at 1,000 unique links per rolling 30-day window per account.
      tags:
      - Deeplink
      parameters:
      - name: Authorization
        in: header
        required: true
        description: Bearer {token}
        schema:
          type: string
      security:
      - bearerAuth: []
      requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              type: object
              properties:
                offer_id:
                  type: integer
                  description: Offer ID from /offers/all. **Resolve first** — an unknown offer_id returns HTTP 500 with a generic 'Something went wrong' message (see Error model).
                url:
                  type: string
                  description: Destination URL — must belong to one of the offer's whitelisted domains. A non-whitelisted host returns the same HTTP 500.
                aff_sub:
                  type: string
                  description: Sub ID 1 — note the param name has no number. Surfaces on the conversion as `aff_sub1`. Up to 255 chars.
                aff_sub2:
                  type: string
                  description: Sub ID 2.
                aff_sub3:
                  type: string
                  description: Sub ID 3.
                aff_sub4:
                  type: string
                  description: Sub ID 4.
                aff_sub5:
                  type: string
                  description: Sub ID 5.
              required:
              - offer_id
              - url
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ResponseEnvelope'
        '401':
          description: Unauthorized. May indicate (a) bad/expired token — re-auth and retry once, OR (b) missing required params (validation errors are returned with status 401 today, not 422). Inspect the `message` field. Token errors may also break the standard envelope (e.g. `{message, status_code}` with no `status` key).
        '429':
          description: Rate limit exceeded. Back off 250 → 500 → 1000 ms.
        '500':
          description: Server-side error. On `/deeplink/generate`, a 500 is also returned for invalid `offer_id` or non-whitelisted destination URLs — these are PERMANENT client errors despite the 5xx code. Inspect `message`; retry only if you have reason to believe the request was previously valid.
components:
  schemas:
    ResponseEnvelope:
      type: object
      required:
      - status
      - data
      properties:
        status:
          type: string
          description: '`success` or `error`.'
          examples:
          - success
        message:
          type: string
          description: Human-readable status message.
        data:
          description: 'Endpoint-specific payload. Paginated list endpoints wrap a `{ page, limit, count, nextPage, data: [...] }` object here; single-record endpoints place the record directly.'
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT