AppLovin MAX Ad Unit Management API

openapi: 3.0.3
info:
  title: AppLovin MAX Ad Unit Management API
  version: v1
  x-generated-from: documentation
  x-source-url: https://support.axon.ai/en/max/advanced-features/ad-unit-management-api
  x-last-validated: '2026-05-05'
  description: |
    Programmatic management of AppLovin MAX ad units, waterfalls,
    experiments, and test devices. Authentication uses the `Api-Key` HTTP
    header. Rate limit: 2,000 requests per hour.
  contact:
    name: AppLovin Support
    url: https://support.axon.ai
servers:
  - url: https://o.applovin.com/mediation/v1
    description: AppLovin MAX mediation management host
security:
  - apiKeyHeader: []
tags:
  - name: Ad Units
    description: Ad unit lifecycle and configuration
  - name: Waterfalls
    description: Per-segment waterfall management
  - name: Experiments
    description: Ad unit A/B experiment management
  - name: Test Devices
    description: Test device management
paths:
  /ad_units:
    get:
      operationId: listAdUnits
      summary: List Ad Units
      description: List active ad unit summaries.
      tags:
        - Ad Units
      parameters:
        - name: fields
          in: query
          required: false
          description: Comma-separated optional fields to include.
          schema:
            type: string
        - name: limit
          in: query
          required: false
          schema:
            type: integer
            minimum: 1
        - name: offset
          in: query
          required: false
          schema:
            type: integer
            minimum: 0
      responses:
        '200':
          description: Array of ad unit summaries.
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/AdUnitSummary'
        '401':
          $ref: '#/components/responses/Unauthorized'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /ad_unit:
    post:
      operationId: createAdUnit
      summary: Create Ad Unit
      description: Create a new ad unit for a given app and platform.
      tags:
        - Ad Units
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
                - name
                - platform
                - package_name
                - ad_format
              properties:
                name:
                  type: string
                platform:
                  type: string
                  enum:
                    - ios
                    - android
                package_name:
                  type: string
                  description: Bundle identifier (iOS) or package name (Android).
                ad_format:
                  type: string
                  enum:
                    - INTER
                    - BANNER
                    - REWARD
                    - MREC
                    - NATIVE
                template_size:
                  type: string
                  description: Template size; native ads only.
      responses:
        '200':
          description: Created ad unit.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AdUnit'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '403':
          $ref: '#/components/responses/Forbidden'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /ad_unit/{ad_unit_id}:
    get:
      operationId: getAdUnit
      summary: Get Ad Unit
      description: Retrieve a single ad unit and its requested fields.
      tags:
        - Ad Units
      parameters:
        - $ref: '#/components/parameters/AdUnitId'
        - name: fields
          in: query
          required: false
          description: |
            Comma-delimited list of optional fields. Supported values:
            `ad_network_settings`, `disabled_ad_network_settings`,
            `frequency_capping_settings`, `bid_floors`, `segments`,
            `banner_refresh_settings`, `mrec_refresh_settings`.
          schema:
            type: string
      responses:
        '200':
          description: Ad unit configuration.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AdUnit'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '403':
          $ref: '#/components/responses/Forbidden'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
    post:
      operationId: updateAdUnit
      summary: Update Ad Unit
      description: |
        Apply changes to the ad unit. Only fields included in the request
        body are updated; omitted fields are left unchanged.
      tags:
        - Ad Units
      parameters:
        - $ref: '#/components/parameters/AdUnitId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/AdUnit'
      responses:
        '200':
          description: Updated ad unit.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AdUnit'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '403':
          $ref: '#/components/responses/Forbidden'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /ad_unit/{ad_unit_id}/{segment_id}:
    get:
      operationId: getAdUnitWaterfall
      summary: Get Ad Unit Waterfall
      description: Retrieve the waterfall configuration for a segment.
      tags:
        - Waterfalls
      parameters:
        - $ref: '#/components/parameters/AdUnitId'
        - $ref: '#/components/parameters/SegmentId'
      responses:
        '200':
          description: Waterfall configuration for the segment.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Waterfall'
        '401':
          $ref: '#/components/responses/Unauthorized'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
    post:
      operationId: updateAdUnitWaterfall
      summary: Update Ad Unit Waterfall
      description: Create, edit, promote, or remove a waterfall for a segment.
      tags:
        - Waterfalls
      parameters:
        - $ref: '#/components/parameters/AdUnitId'
        - $ref: '#/components/parameters/SegmentId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Waterfall'
      responses:
        '200':
          description: Updated waterfall.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Waterfall'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /ad_unit_experiment/{ad_unit_id}:
    get:
      operationId: getAdUnitExperiment
      summary: Get Ad Unit Experiment
      tags:
        - Experiments
      parameters:
        - $ref: '#/components/parameters/AdUnitId'
      responses:
        '200':
          description: Experiment configuration.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AdUnitExperiment'
        '401':
          $ref: '#/components/responses/Unauthorized'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
    post:
      operationId: upsertAdUnitExperiment
      summary: Upsert Ad Unit Experiment
      description: |
        Create, update, promote, or deprecate an ad unit experiment. To
        create, omit or null the `id` field. To promote or deprecate, set
        `promote: true` or `deprecate: true`.
      tags:
        - Experiments
      parameters:
        - $ref: '#/components/parameters/AdUnitId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/AdUnitExperiment'
      responses:
        '200':
          description: Created or updated experiment.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AdUnitExperiment'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /ad_unit_experiment/{ad_unit_id}/{segment_id}:
    get:
      operationId: getAdUnitExperimentWaterfall
      summary: Get Ad Unit Experiment Waterfall
      tags:
        - Experiments
      parameters:
        - $ref: '#/components/parameters/AdUnitId'
        - $ref: '#/components/parameters/SegmentId'
      responses:
        '200':
          description: Experiment waterfall.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Waterfall'
        '401':
          $ref: '#/components/responses/Unauthorized'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
    post:
      operationId: updateAdUnitExperimentWaterfall
      summary: Update Ad Unit Experiment Waterfall
      tags:
        - Experiments
      parameters:
        - $ref: '#/components/parameters/AdUnitId'
        - $ref: '#/components/parameters/SegmentId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Waterfall'
      responses:
        '200':
          description: Updated experiment waterfall.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Waterfall'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /test_devices:
    get:
      operationId: listTestDevices
      summary: List Test Devices
      tags:
        - Test Devices
      responses:
        '200':
          description: All test devices (enabled and disabled).
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/TestDevice'
        '401':
          $ref: '#/components/responses/Unauthorized'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /test_device:
    post:
      operationId: createTestDevice
      summary: Create Test Device
      tags:
        - Test Devices
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/TestDevice'
      responses:
        '200':
          description: Created test device.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TestDevice'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /test_device/{test_device_id}:
    get:
      operationId: getTestDevice
      summary: Get Test Device
      tags:
        - Test Devices
      parameters:
        - $ref: '#/components/parameters/TestDeviceId'
      responses:
        '200':
          description: Test device configuration.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TestDevice'
        '401':
          $ref: '#/components/responses/Unauthorized'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
    post:
      operationId: updateTestDevice
      summary: Update Test Device
      tags:
        - Test Devices
      parameters:
        - $ref: '#/components/parameters/TestDeviceId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/TestDevice'
      responses:
        '200':
          description: Updated test device.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TestDevice'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
components:
  securitySchemes:
    apiKeyHeader:
      type: apiKey
      in: header
      name: Api-Key
      description: Management Key from AppLovin dashboard (Account > General > Keys).
  parameters:
    AdUnitId:
      name: ad_unit_id
      in: path
      required: true
      description: Ad unit identifier.
      schema:
        type: string
    SegmentId:
      name: segment_id
      in: path
      required: true
      description: Segment identifier scoped under the ad unit.
      schema:
        type: string
    TestDeviceId:
      name: test_device_id
      in: path
      required: true
      description: Test device identifier.
      schema:
        type: string
  schemas:
    AdUnit:
      type: object
      description: |
        MAX ad unit configuration. x-schema-source: documentation
      properties:
        id:
          type: string
        name:
          type: string
        platform:
          type: string
          enum:
            - ios
            - android
        package_name:
          type: string
        ad_format:
          type: string
          enum:
            - INTER
            - BANNER
            - REWARD
            - MREC
            - NATIVE
        template_size:
          type: string
        has_active_experiment:
          type: boolean
        disabled:
          type: boolean
        ad_network_settings:
          type: array
          items:
            $ref: '#/components/schemas/AdNetworkSetting'
        disabled_ad_network_settings:
          type: array
          items:
            $ref: '#/components/schemas/AdNetworkSetting'
        frequency_capping_settings:
          type: array
          items:
            $ref: '#/components/schemas/FrequencyCappingSetting'
        bid_floors:
          type: array
          items:
            $ref: '#/components/schemas/BidFloor'
        segments:
          type: array
          items:
            $ref: '#/components/schemas/Segment'
        banner_refresh_settings:
          type: object
          additionalProperties: true
        mrec_refresh_settings:
          type: object
          additionalProperties: true
    AdUnitSummary:
      type: object
      properties:
        id:
          type: string
        name:
          type: string
        platform:
          type: string
        ad_format:
          type: string
        package_name:
          type: string
        disabled:
          type: boolean
    AdNetworkSetting:
      type: object
      properties:
        ad_network:
          type: string
        ad_network_ad_units:
          type: array
          items:
            $ref: '#/components/schemas/AdNetworkAdUnit'
        cpm:
          type: number
        country_targeting_type:
          type: string
          enum:
            - INCLUDE
            - EXCLUDE
        countries:
          type: array
          items:
            type: string
    AdNetworkAdUnit:
      type: object
      properties:
        ad_network_ad_unit_id:
          type: string
        country_targeting_type:
          type: string
          enum:
            - INCLUDE
            - EXCLUDE
        countries:
          type: array
          items:
            type: string
        cpm:
          type: number
    FrequencyCappingSetting:
      type: object
      properties:
        type:
          type: string
          enum:
            - time
            - session
        day_limit:
          type: integer
        minute_frequency:
          type: integer
        session_limit:
          type: integer
        country_targeting_type:
          type: string
          enum:
            - INCLUDE
            - EXCLUDE
        countries:
          type: array
          items:
            type: string
    BidFloor:
      type: object
      properties:
        country_group_name:
          type: string
        cpm:
          type: number
        countries:
          type: object
          additionalProperties:
            type: number
    Segment:
      type: object
      properties:
        id:
          type: string
        name:
          type: string
        id_type:
          type: string
        device_type:
          type: string
        segment_keys:
          type: array
          items:
            type: string
    Waterfall:
      type: object
      properties:
        ad_unit_id:
          type: string
        segment_id:
          type: string
        ad_network_settings:
          type: array
          items:
            $ref: '#/components/schemas/AdNetworkSetting'
        bid_floors:
          type: array
          items:
            $ref: '#/components/schemas/BidFloor'
    AdUnitExperiment:
      type: object
      properties:
        id:
          type: string
        ad_unit_id:
          type: string
        experiment_name:
          type: string
        promote:
          type: boolean
        deprecate:
          type: boolean
        ad_network_settings:
          type: array
          items:
            $ref: '#/components/schemas/AdNetworkSetting'
      required:
        - experiment_name
    TestDevice:
      type: object
      properties:
        id:
          type: string
        name:
          type: string
        device_id:
          type: string
          description: IDFA or GAID.
        disabled:
          type: boolean
        network:
          type: string
      required:
        - name
        - device_id
        - disabled
        - network
    Error:
      type: object
      properties:
        code:
          type: integer
        message:
          type: string
      required:
        - code
  responses:
    BadRequest:
      description: Validation error.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    Unauthorized:
      description: Missing or invalid Api-Key header.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    Forbidden:
      description: Authenticated but not allowed.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'