Leanplum Postbacks & Batch API

openapi: 3.0.3
info:
  title: Leanplum A/B Tests Postbacks & Batch API
  version: 1.0.6
  description: 'The Leanplum (Leanplum by CleverTap) REST API. All requests are made to https://api.leanplum.com/api and are dispatched by an `action` parameter that names the method to run (for example action=track or action=sendMessage). Every request carries `appId`, a permission-scoped `clientKey`, and `apiVersion`; most requests also carry a `userId` and/or `deviceId`. Requests may be sent as GET (arguments as query parameters) or POST (arguments in a JSON or multipart body). Multiple actions can be batched with the `multi` method.


    Operating status note: Leanplum was acquired by CleverTap in 2022 and now operates as "Leanplum by CleverTap." The documented API surface below remains active during customer migration to CleverTap; CleverTap has wrapped its own methods behind these Leanplum API methods to ease that transition. Endpoint method names are grounded in the public Leanplum API reference; request/response schemas are modeled and should be verified against the live docs.'
  contact:
    name: API Evangelist
    email: kin@apievangelist.com
  license:
    name: Proprietary
    url: https://www.leanplum.com
  x-provenance:
    origin: api-evangelist-modeled
    note: >-
      Method names are grounded in Leanplum's public API reference, but the
      request/response schemas in this document were MODELED by API Evangelist, not
      published by Leanplum. Leanplum's own OpenAPI 3.0.0 document (x-api-id
      "leanplum-api", 42 operations) was harvested on 2026-08-13 and is saved
      verbatim at openapi/leanplum-api-openapi.json — prefer it. This file is
      retained for its per-tag split only and must not be credited as
      provider-published.
    harvested_original: openapi/leanplum-api-openapi.json
    stamped: '2026-08-13'
servers:
- url: https://api.leanplum.com
  description: Leanplum production API
tags:
- name: Postbacks & Batch
paths:
  /api?action=addPostback:
    post:
      tags:
      - Postbacks & Batch
      operationId: addPostback
      summary: Register a postback (webhook)
      description: Registers an HTTP postback callback fired on configured events.
      parameters:
      - $ref: '#/components/parameters/appId'
      - $ref: '#/components/parameters/clientKey'
      - $ref: '#/components/parameters/apiVersion'
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                url:
                  type: string
                  description: The postback URL to call.
              additionalProperties: true
      responses:
        '200':
          description: Postback registered.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiResponse'
  /api?action=multi:
    post:
      tags:
      - Postbacks & Batch
      operationId: multi
      summary: Batch multiple actions
      description: Batches multiple API actions into a single request. Limited to 50 users and/or 500 actions per call; calls exceeding the limit are ignored and return 403. Each unique user lookup is a billable API call.
      parameters:
      - $ref: '#/components/parameters/appId'
      - $ref: '#/components/parameters/clientKey'
      - $ref: '#/components/parameters/apiVersion'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/MultiRequest'
      responses:
        '200':
          description: Batch processed; per-action results returned.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiResponse'
        '403':
          description: Batch exceeded the 50 user / 500 action limit and was ignored.
components:
  schemas:
    ApiResponse:
      type: object
      description: Standard Leanplum response envelope with one response object per action.
      properties:
        response:
          type: array
          items:
            type: object
            properties:
              success:
                type: boolean
              error:
                type: object
                properties:
                  message:
                    type: string
            additionalProperties: true
    MultiRequest:
      type: object
      properties:
        data:
          type: array
          description: Up to 500 action objects (max 50 unique users) to execute in one call.
          items:
            type: object
            properties:
              action:
                type: string
              userId:
                type: string
            additionalProperties: true
      required:
      - data
  parameters:
    clientKey:
      name: clientKey
      in: query
      required: true
      schema:
        type: string
      description: The permission-scoped API key for the operation - production, development, data export, or content read-only. Send in the request body for POST requests to keep it secure.
    apiVersion:
      name: apiVersion
      in: query
      required: true
      schema:
        type: string
        default: 1.0.6
      description: API version, for example 1.0.6.
    appId:
      name: appId
      in: query
      required: true
      schema:
        type: string
      description: Your Leanplum application id.