Instapage Domains API

openapi: 3.2.0
info:
  title: Instapage Domains API
  description: 'Custom domains connected to a workspace.


    The Instapage Public API is a REST API over the Instapage landing page and post-click optimization platform. It exposes workspaces, team members, landing pages, page groups, personalized experiences, collections and collection pages, experiments, analytics, form submissions (leads), custom domains and image assets.


    Authentication is a personal API token sent as an HTTP Bearer token in the Authorization header. A personal token inherits all permissions from its creator and cannot exceed them; expired or revoked tokens return 401. Rate limiting is 200 requests per minute enforced per token and per IP address, on top of a daily plan quota that resets at 00:00 UTC; exceeding either returns 429 with a Retry-After header.


    List endpoints are page-number paginated via the `page` query parameter and return a `meta.pagination` block; form submissions instead use an opaque `meta.nextPageToken` cursor. Errors are returned as a `{title, details, meta}` envelope.


    Instapage does not publish an OpenAPI description. This document was transcribed by API Evangelist from the published API reference at https://devdocs.instapage.com/ and is not an official Instapage artifact.'
  version: '1'
  contact:
    name: Instapage Developer Docs
    url: https://devdocs.instapage.com/
  termsOfService: https://instapage.com/terms-of-service
  x-provenance:
    method: derived
    source: https://devdocs.instapage.com/
    generated: '2026-08-13'
    note: Instapage publishes no OpenAPI. Transcribed from the published API reference; not an official Instapage artifact.
servers:
- url: https://api.instapage.com/v1
  description: Instapage Public API v1
security:
- BearerAuth: []
tags:
- name: Domains
  description: Custom domains connected to a workspace.
paths:
  /workspaces/{workspaceId}/domains:
    get:
      summary: Get all domains
      description: Retrieve all custom domains for a specific workspace.
      operationId: listDomains
      tags:
      - Domains
      parameters:
      - in: path
        name: workspaceId
        required: true
        description: The ID of the workspace.
        schema:
          type: number
      - in: query
        name: page
        required: false
        description: Specifies which page to fetch. Used for pagination purposes.
        schema:
          type: number
          default: 1
      responses:
        '200':
          description: The request was processed successfully.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/Domain'
                  meta:
                    $ref: '#/components/schemas/PaginationMeta'
        '400':
          description: Bad request. Validation error — review input parameters.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized. Authentication failed or missing credentials, or you don't have access to the workspace.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Not Found. The specified workspace could not be found.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '429':
          description: Too Many Requests. The server is rejecting requests due to an excessive rate of requests. Slow down and retry after some time.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
          headers:
            Retry-After:
              description: Number of seconds to wait before retrying, returned when the daily plan quota or the 200 requests/minute limit is exceeded.
              schema:
                type: integer
        '500':
          description: Internal Server Error. An unexpected condition prevented the request from being fulfilled.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
components:
  schemas:
    Error:
      type: object
      description: Error envelope returned by the Instapage API.
      properties:
        title:
          type: string
          description: The type of error that occurred.
        details:
          type: string
          description: A human-readable description of the error.
        meta:
          type: object
          properties:
            requestedUserId:
              type: number
              description: ID of the user who made the request.
            requestedWorkspaceId:
              type: number
              description: ID of the workspace involved.
            requestedPageId:
              type: number
              description: ID of the page involved, when the error concerns a page.
    PaginationMeta:
      type: object
      properties:
        pagination:
          $ref: '#/components/schemas/Pagination'
    Domain:
      type: object
      properties:
        id:
          type: number
          description: Unique identifier of the domain.
        subdomain:
          type: string
          description: Subdomain part (preceding the main domain).
        domain:
          type: string
          description: Main domain name.
        connection:
          type: string
          description: Connection status of the domain.
          enum:
          - connected
          - accessRequested
          - accessRequestDenied
          - accessProvided
        ssl:
          type: string
          description: SSL certificate status.
        custom404:
          type:
          - object
          - 'null'
          description: Custom 404 page configuration, null if not configured.
          properties:
            type:
              type: string
              enum:
              - outside
              - landingpage
              description: Type of 404 page configuration.
            id:
              type:
              - number
              - 'null'
              description: Id of the landing page associated with the 404 page configuration.
            url:
              type:
              - string
              - 'null'
              description: Url of the outside website associated with the 404 page configuration.
    Pagination:
      type: object
      properties:
        currentPage:
          type: number
          description: Number of the current page of results.
        perPage:
          type: number
          description: Number of items per page.
        totalItemsCount:
          type: number
          description: Total number of items.
        totalPagesCount:
          type: number
          description: Total number of pages.
        nextPage:
          type:
          - number
          - 'null'
          description: Number of the next page, null if there is no next page.
        previousPage:
          type:
          - number
          - 'null'
          description: Number of the previous page, null if there is no previous page.
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      bearerFormat: Personal API Token
      description: 'Personal API token generated from Instapage account settings, sent as `Authorization: Bearer <token>`.'