HubSpot Marketing Campaigns Public API API

openapi: 3.0.1
info:
  title: HubSpot Marketing Campaigns Public API
  description: Basepom for all HubSpot Projects
  version: 2026-03
  x-hubspot-product-tier-requirements:
    marketing: PROFESSIONAL
    sales: FREE
    service: FREE
    cms: FREE
    commerce: FREE
    crmHub: FREE
    dataHub: FREE
servers:
- url: https://api.hubapi.com
tags:
- name: Assets
- name: Basic
- name: Batch
- name: Budget
- name: Metrics
- name: Spend
paths:
  /marketing/campaigns/2026-03:
    get:
      tags:
      - Basic
      operationId: get-/marketing/campaigns/2026-03_/marketing/campaigns/v3
      parameters:
      - name: after
        in: query
        required: false
        style: form
        explode: true
        schema:
          type: string
      - name: limit
        in: query
        required: false
        style: form
        explode: true
        schema:
          type: integer
          format: int32
      - name: name
        in: query
        required: false
        style: form
        explode: true
        schema:
          type: string
      - name: properties
        in: query
        required: false
        style: form
        explode: true
        schema:
          type: array
          items:
            type: string
      - name: sort
        in: query
        required: false
        style: form
        explode: true
        schema:
          type: string
      responses:
        '200':
          description: successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CollectionResponseWithTotalPublicCampaign'
        default:
          description: ''
          $ref: '#/components/responses/Error'
      security:
      - oauth2:
        - marketing.campaigns.read
    post:
      tags:
      - Basic
      operationId: post-/marketing/campaigns/2026-03_/marketing/campaigns/v3
      parameters: []
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PublicCampaignInput'
        required: true
      responses:
        '201':
          description: successful operation
          headers:
            Location:
              description: URL of the newly created resource
              style: simple
              explode: false
              schema:
                type: string
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PublicCampaign'
        default:
          description: ''
          $ref: '#/components/responses/Error'
      security:
      - oauth2:
        - marketing.campaigns.write
  /marketing/campaigns/2026-03/batch/archive:
    post:
      tags:
      - Batch
      summary: Delete a batch of campaigns
      description: "This endpoint deletes a batch of campaigns. \nThe maximum number of items in a batch\
        \ request is 50.\nThe response will always be 204 No Content, regardless of whether the campaigns\
        \ exist or not, whether they were successfully deleted or not, or if only some of the campaigns\
        \ in the batch were deleted."
      operationId: post-/marketing/campaigns/2026-03/batch/archive
      parameters: []
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/BatchInputPublicCampaignDeleteInput'
        required: true
      responses:
        '204':
          description: No content
          content: {}
        default:
          description: ''
          $ref: '#/components/responses/Error'
      security:
      - oauth2:
        - marketing.campaigns.write
  /marketing/campaigns/2026-03/batch/create:
    post:
      tags:
      - Batch
      summary: Create a batch of campaigns
      description: 'This endpoint creates a batch of campaigns. The maximum number of items in a batch
        request is 50.

        The campaigns in the response are not guaranteed to be in the same order as they were provided
        in the request.'
      operationId: post-/marketing/campaigns/2026-03/batch/create
      parameters: []
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/BatchInputPublicCampaignInput'
        required: true
      responses:
        '201':
          description: successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BatchResponsePublicCampaign'
        '207':
          description: multiple statuses
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BatchResponsePublicCampaignWithErrors'
        default:
          description: ''
          $ref: '#/components/responses/Error'
      security:
      - oauth2:
        - marketing.campaigns.write
  /marketing/campaigns/2026-03/batch/read:
    post:
      tags:
      - Batch
      summary: Read a batch of campaigns
      description: "This endpoint reads a batch of campaigns based on the provided input data and returns\
        \ the campaigns along with their associated assets. \nThe maximum number of items in a batch request\
        \ is 50.\nThe campaigns in the response are not guaranteed to be in the same order as they were\
        \ provided in the request.\nIf duplicate campaign IDs are provided in the request, duplicates\
        \ will be ignored. The response will include only unique IDs and will be returned without duplicates.\n"
      operationId: post-/marketing/campaigns/2026-03/batch/read
      parameters:
      - name: endDate
        in: query
        description: 'End date to fetch asset metrics, formatted as YYYY-MM-DD. This date is used to fetch
          the metrics associated with the assets for a specified period.  If not provided, no asset metrics
          will be fetched.

          Example: 2024-01-27'
        required: false
        style: form
        explode: true
        schema:
          type: string
      - name: properties
        in: query
        description: 'A comma-separated list of the properties to be returned in the response. If any
          of the specified properties has empty value on the requested object(s), they will be ignored
          and not returned in response. If this parameter is empty, the response will include an empty
          properties map.

          Example: hs_name, hs_campaign_status, hs_notes'
        required: false
        style: form
        explode: true
        schema:
          type: array
          items:
            type: string
      - name: startDate
        in: query
        description: 'Start date to fetch asset metrics, formatted as YYYY-MM-DD. This date is used to
          fetch the metrics associated with the assets for a specified period.  If not provided, no asset
          metrics will be fetched.

          Example: 2023-01-20'
        required: false
        style: form
        explode: true
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/BatchInputPublicCampaignReadInput'
        required: true
      responses:
        '200':
          description: successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BatchResponsePublicCampaignWithAssets'
        '207':
          description: multiple statuses
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BatchResponsePublicCampaignWithAssetsWithErrors'
        default:
          description: ''
          $ref: '#/components/responses/Error'
      security:
      - oauth2:
        - marketing.campaigns.read
  /marketing/campaigns/2026-03/batch/update:
    post:
      tags:
      - Batch
      summary: Update a batch of campaigns
      description: 'This endpoint updates a batch of campaigns based on the provided input data.

        The maximum number of items in a batch request is 50.

        If an empty string ("") is passed for any property in the Batch Update, it will reset that property''s
        value.'
      operationId: post-/marketing/campaigns/2026-03/batch/update
      parameters: []
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/BatchInputPublicCampaignBatchUpdateItem'
        required: true
      responses:
        '200':
          description: successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BatchResponsePublicCampaign'
        '207':
          description: multiple statuses
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BatchResponsePublicCampaignWithErrors'
        default:
          description: ''
          $ref: '#/components/responses/Error'
      security:
      - oauth2:
        - marketing.campaigns.write
  /marketing/campaigns/2026-03/{campaignGuid}:
    get:
      tags:
      - Basic
      summary: Read a campaign
      description: Get a campaign identified by a specific campaignGuid with the given properties. Along
        with the campaign information, it also returns information about assets. Depending on the query
        parameters used, this can also be used to return information about the corresponding assets' metrics.
        Metrics are available only if startDate and endDate are provided.
      operationId: get-/marketing/campaigns/2026-03/{campaignGuid}
      parameters:
      - name: campaignGuid
        in: path
        description: 'The UUID of the campaign, required

          Example: 9dbec438-53e2-4b28-8c0f-38f56574a6e8'
        required: true
        style: simple
        explode: false
        schema:
          type: string
      - name: endDate
        in: query
        description: 'The end date for fetching asset metrics, in YYYY-MM-DD format.

          Optional. Example: 2000-01-27'
        required: false
        style: form
        explode: true
        schema:
          type: string
      - name: properties
        in: query
        description: "A comma-separated list of properties to include in the response.  \n  Unrecognized\
          \ properties are ignored. Optional. Example: hs_name,hs_budget, hs_notes"
        required: false
        style: form
        explode: true
        schema:
          type: array
          items:
            type: string
      - name: startDate
        in: query
        description: "The start date for fetching asset metrics, in YYYY-MM-DD format.   \nOptional. Example:\
          \ 2000-01-20         "
        required: false
        style: form
        explode: true
        schema:
          type: string
      responses:
        '200':
          description: successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PublicCampaignWithAssets'
        default:
          description: ''
          $ref: '#/components/responses/Error'
      security:
      - oauth2:
        - marketing.campaigns.read
    delete:
      tags:
      - Basic
      summary: 'Delete campaign '
      description: 'Delete a specified campaign from the system.

        This call will return a 204 No Content response regardless of whether the campaignGuid provided
        corresponds to an existing campaign or not.'
      operationId: delete-/marketing/campaigns/2026-03/{campaignGuid}
      parameters:
      - name: campaignGuid
        in: path
        description: 'The UUID of the campaign, required

          Example: 9dbec438-53e2-4b28-8c0f-38f56574a6e8'
        required: true
        style: simple
        explode: false
        schema:
          type: string
      responses:
        '204':
          description: No content
          content: {}
        default:
          description: ''
          $ref: '#/components/responses/Error'
      security:
      - oauth2:
        - marketing.campaigns.write
    patch:
      tags:
      - Basic
      summary: Update campaign
      description: 'Perform a partial update of a campaign identified by the specified campaignGuid. Provided
        property values will be overwritten. Read-only and non-existent properties will cause 400 error.

        If an empty string is passed for any property in the Batch Update, it will reset that property''s
        value.

        '
      operationId: patch-/marketing/campaigns/2026-03/{campaignGuid}
      parameters:
      - name: campaignGuid
        in: path
        description: 'The UUID of the campaign, required

          Example: 9dbec438-53e2-4b28-8c0f-38f56574a6e8'
        required: true
        style: simple
        explode: false
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PublicCampaignInput'
        required: true
      responses:
        '200':
          description: successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PublicCampaign'
        default:
          description: ''
          $ref: '#/components/responses/Error'
      security:
      - oauth2:
        - marketing.campaigns.write
  /marketing/campaigns/2026-03/{campaignGuid}/assets/{assetType}:
    get:
      tags:
      - Assets
      summary: List assets
      description: 'This endpoint lists all assets of the campaign by asset type. The assetType parameter
        is required, and each request can only fetch assets of a single type.

        Asset metrics can also be fetched along with the assets; they are available only if start and
        end dates are provided.'
      operationId: get-/marketing/campaigns/2026-03/{campaignGuid}/assets/{assetType}
      parameters:
      - name: assetType
        in: path
        description: 'The type of asset to fetch, required

          Example: MARKETING_EVENT'
        required: true
        style: simple
        explode: false
        schema:
          type: string
      - name: campaignGuid
        in: path
        description: 'The UUID of the campaign, required

          Example: 9dbec438-53e2-4b28-8c0f-38f56574a6e8'
        required: true
        style: simple
        explode: false
        schema:
          type: string
      - name: after
        in: query
        description: The paging cursor token of the last successfully read resource will be returned as
          the `paging.next.after` JSON property of a paged response containing more results.
        required: false
        style: form
        explode: true
        schema:
          type: string
      - name: endDate
        in: query
        description: 'End date to fetch asset metrics, formatted as YYYY-MM-DD. This date is used to fetch
          the metrics associated with the assets for a specified period.  If not provided, no asset metrics
          will be fetched.

          Example: 2024-01-27'
        required: false
        style: form
        explode: true
        schema:
          type: string
      - name: limit
        in: query
        description: The maximum number of results to display per page.
        required: false
        style: form
        explode: true
        schema:
          type: string
      - name: startDate
        in: query
        description: 'Start date to fetch asset metrics, formatted as YYYY-MM-DD. This date is used to
          fetch the metrics associated with the assets for a specified period.  If not provided, no asset
          metrics will be fetched.

          Example: 2023-01-20'
        required: false
        style: form
        explode: true
        schema:
          type: string
      responses:
        '200':
          description: successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CollectionResponsePublicCampaignAssetForwardPaging'
        default:
          description: ''
          $ref: '#/components/responses/Error'
      security:
      - oauth2:
        - marketing.campaigns.read
  /marketing/campaigns/2026-03/{campaignGuid}/assets/{assetType}/{assetId}:
    put:
      tags:
      - Assets
      summary: Add asset association
      description: 'Associate a specified asset with a campaign. Using the API, you can create associations
        for the following asset types: ads, blog posts, calls, case studies, CTAs, CTAs (legacy), external
        website pages, feedback surveys, forms, files, knowledge base articles, landing pages, marketing
        email, marketing events, meetings, playbooks, podcast episodes, sales documents, sales emails,
        sequences, SMS, social posts, static lists, videos, website pages, and workflows.


        For other asset types, it is recommended to manage your associations directly in the campaign
        tool in HubSpot.'
      operationId: put-/marketing/campaigns/2026-03/{campaignGuid}/assets/{assetType}/{assetId}
      parameters:
      - name: assetId
        in: path
        description: 'The id of asset to disassociate, required

          Example: 154543'
        required: true
        style: simple
        explode: false
        schema:
          type: string
      - name: assetType
        in: path
        description: 'The type of asset to disassociate, required

          Example: OBJECT_LIST'
        required: true
        style: simple
        explode: false
        schema:
          type: string
      - name: campaignGuid
        in: path
        description: 'The UUID of the campaign, required

          Example: 9dbec438-53e2-4b28-8c0f-38f56574a6e8'
        required: true
        style: simple
        explode: false
        schema:
          type: string
      responses:
        '204':
          description: No content
          content: {}
        default:
          description: ''
          $ref: '#/components/responses/Error'
      security:
      - oauth2:
        - marketing.campaigns.write
    delete:
      tags:
      - Assets
      summary: Remove asset association
      description: 'Disassociate a specified asset from a campaign. Using the API, you can remove associations
        for the following asset types: ads, blog posts, calls, case studies, CTAs, CTAs (legacy), external
        website pages, feedback surveys, forms, files, knowledge base articles, landing pages, marketing
        email, marketing events, meetings, playbooks, podcast episodes, sales documents, sales emails,
        sequences, SMS, social posts, static lists, videos, website pages, and workflows.


        For other asset types, it is recommended to manage your associations directly in the campaign
        tool in HubSpot.'
      operationId: delete-/marketing/campaigns/2026-03/{campaignGuid}/assets/{assetType}/{assetId}
      parameters:
      - name: assetId
        in: path
        description: 'The id of asset to disassociate, required

          Example: 154543'
        required: true
        style: simple
        explode: false
        schema:
          type: string
      - name: assetType
        in: path
        description: 'The type of asset to disassociate, required

          Example: OBJECT_LIST'
        required: true
        style: simple
        explode: false
        schema:
          type: string
      - name: campaignGuid
        in: path
        description: 'The UUID of the campaign, required

          Example: 9dbec438-53e2-4b28-8c0f-38f56574a6e8'
        required: true
        style: simple
        explode: false
        schema:
          type: string
      responses:
        '204':
          description: No content
          content: {}
        default:
          description: ''
          $ref: '#/components/responses/Error'
      security:
      - oauth2:
        - marketing.campaigns.write
  /marketing/campaigns/2026-03/{campaignGuid}/budget:
    post:
      tags:
      - Budget
      summary: Add budget item
      description: Add a new budget item to the campaign
      operationId: post-/marketing/campaigns/2026-03/{campaignGuid}/budget
      parameters:
      - name: campaignGuid
        in: path
        description: 'The UUID of the campaign, required

          Example: 9dbec438-53e2-4b28-8c0f-38f56574a6e8'
        required: true
        style: simple
        explode: false
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PublicBudgetItemInput'
        required: true
      responses:
        '201':
          description: successful operation
          headers:
            Location:
              description: URL of the newly created resource
              style: simple
              explode: false
              schema:
                type: string
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PublicBudgetItem'
        default:
          description: ''
          $ref: '#/components/responses/Error'
      security:
      - oauth2:
        - marketing.campaigns.write
  /marketing/campaigns/2026-03/{campaignGuid}/budget/totals:
    get:
      tags:
      - Budget
      summary: Read budget
      description: 'Retrieve detailed information about the budget and spend items for a specified campaign,
        including the total budget, total spend, and remaining budget.

        Budget and Spend items may be returned in any order, but the order field specifies their sequence
        based on the creation date. The item with order 0 is the oldest, and items with higher order values
        are newer'
      operationId: get-/marketing/campaigns/2026-03/{campaignGuid}/budget/totals
      parameters:
      - name: campaignGuid
        in: path
        description: 'The UUID of the campaign, required

          Example: 9dbec438-53e2-4b28-8c0f-38f56574a6e8'
        required: true
        style: simple
        explode: false
        schema:
          type: string
      responses:
        '200':
          description: successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PublicBudgetTotals'
        default:
          description: ''
          $ref: '#/components/responses/Error'
      security:
      - oauth2:
        - marketing.campaigns.read
  /marketing/campaigns/2026-03/{campaignGuid}/budget/{budgetId}:
    get:
      tags:
      - Budget
      summary: Get budget item
      description: Get a specific budget item by ID
      operationId: get-/marketing/campaigns/2026-03/{campaignGuid}/budget/{budgetId}
      parameters:
      - name: budgetId
        in: path
        description: 'The ID of the budget item, required. Example: 352                   '
        required: true
        style: simple
        explode: false
        schema:
          type: integer
          format: int64
      - name: campaignGuid
        in: path
        description: 'The UUID of the campaign, required

          Example: 9dbec438-53e2-4b28-8c0f-38f56574a6e8'
        required: true
        style: simple
        explode: false
        schema:
          type: string
      responses:
        '200':
          description: successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PublicBudgetItem'
        default:
          description: ''
          $ref: '#/components/responses/Error'
      security:
      - oauth2:
        - marketing.campaigns.read
    put:
      tags:
      - Budget
      summary: Update budget item
      description: Update a specific budget item by ID
      operationId: put-/marketing/campaigns/2026-03/{campaignGuid}/budget/{budgetId}
      parameters:
      - name: budgetId
        in: path
        description: 'The ID of the budget item, required. Example: 352                   '
        required: true
        style: simple
        explode: false
        schema:
          type: integer
          format: int64
      - name: campaignGuid
        in: path
        description: 'The UUID of the campaign, required

          Example: 9dbec438-53e2-4b28-8c0f-38f56574a6e8'
        required: true
        style: simple
        explode: false
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PublicBudgetItemInput'
        required: true
      responses:
        '200':
          description: successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PublicBudgetItem'
        default:
          description: ''
          $ref: '#/components/responses/Error'
      security:
      - oauth2:
        - marketing.campaigns.write
    delete:
      tags:
      - Budget
      summary: Delete budget item
      description: Delete a specific budget item by ID
      operationId: delete-/marketing/campaigns/2026-03/{campaignGuid}/budget/{budgetId}
      parameters:
      - name: budgetId
        in: path
        description: 'The ID of the budget item, required. Example: 352                   '
        required: true
        style: simple
        explode: false
        schema:
          type: integer
          format: int64
      - name: campaignGuid
        in: path
        description: 'The UUID of the campaign, required

          Example: 9dbec438-53e2-4b28-8c0f-38f56574a6e8'
        required: true
        style: simple
        explode: false
        schema:
          type: string
      responses:
        '204':
          description: No content
          content: {}
        default:
          description: ''
          $ref: '#/components/responses/Error'
      security:
      - oauth2:
        - marketing.campaigns.write
  /marketing/campaigns/2026-03/{campaignGuid}/reports/contacts/{contactType}:
    get:
      tags:
      - Metrics
      summary: Fetch contact IDs
      description: Fetch the list of contact IDs for the specified campaign and contact type
      operationId: get-/marketing/campaigns/2026-03/{campaignGuid}/reports/contacts/{contactType}
      parameters:
      - name: campaignGuid
        in: path
        description: The unique identifier of the campaign
        required: true
        style: simple
        explode: false
        schema:
          type: string
      - name: contactType
        in: path
        description: The type of contact to filter the list
        required: true
        style: simple
        explode: false
        schema:
          type: string
      - name: after
        in: query
        description: The paging cursor token of the last successfully read resource will be returned as
          the `paging.next.after` JSON property of a paged response containing more results.
        required: false
        style: form
        explode: true
        schema:
          type: string
      - name: endDate
        in: query
        description: "The end date for fetching contact data, in YYYY-MM-DD format.        \nOptional.\
          \ Example: 2000-01-27    "
        required: false
        style: form
        explode: true
        schema:
          type: string
      - name: limit
        in: query
        description: The maximum number of results to display per page.
        required: false
        style: form
        explode: true
        schema:
          type: integer
          format: int32
      - name: startDate
        in: query
        description: "The start date for fetching contact data, in YYYY-MM-DD format.    \nOptional. Example:\
          \ 2000-01-20"
        required: false
        style: form
        explode: true
        schema:
          type: string
      responses:
        '200':
          description: successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CollectionResponseContactReferenceForwardPaging'
        default:
          description: ''
          $ref: '#/components/responses/Error'
      security:
      - oauth2:
        - marketing.campaigns.read
  /marketing/campaigns/2026-03/{campaignGuid}/reports/metrics:
    get:
      tags:
      - Metrics
      summary: 'Get Campaign Metrics

        '
      description: This endpoint retrieves key attribution metrics for a specified campaign, such as sessions,
        new contacts, and influenced contacts.
      operationId: get-/marketing/campaigns/2026-03/{campaignGuid}/reports/metrics
      parameters:
      - name: campaignGuid
        in: path
        description: The unique identifier of the campaign
        required: true
        style: simple
        explode: false
        schema:
          type: string
      - name: endDate
        in: query
        description: 'The end date for fetching attribution data, in YYYY-MM-DD format.

          Optional. Example: 2000-01-27       '
        required: false
        style: form
        explode: true
        schema:
          type: string
      - name: startDate
        in: query
        description: 'The start date for fetching attribution data, in YYYY-MM-DD format.

          Optional. Example: 2000-01-20'
        required: false
        style: form
        explode: true
        schema:
          type: string
      responses:
        '200':
          description: successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MetricsCounters'
        default:
          description: ''
          $ref: '#/components/responses/Error'
      security:
      - oauth2:
        - marketing.campaigns.read
  /marketing/campaigns/2026-03/{campaignGuid}/reports/revenue:
    get:
      tags:
      - Metrics
      summary: Fetch revenue
      description: 'Fetch revenue attribution report data for a specified campaign

        '
      operationId: get-/marketing/campaigns/2026-03/{campaignGuid}/reports/revenue
      parameters:
      - name: campaignGuid
        in: path
        description: The unique identifier of the campaign
        required: true
        style: simple
        explode: false
        schema:
          type: string
      - name: attributionModel
        in: query
        description: 'The revenue attribution model used to calculate deal revenue credit. Defaults to
          LINEAR if not specified. Enum values: LINEAR,            FIRST_INTERACTION, LAST_INTERACTION,
          FULL_PATH, U_SHAPED, W_SHAPED,          TIME_DECAY, J_SHAPED, INVERSE_J_SHAPED'
        required: false
        style: form
        explode: true
        schema:
          type: string
      - name: endDate
        in: query
        description: End date to fetch attribution data, YYYY-MM-DD
        required: false
        style: form
        explode: true
        schema:
          type: string
      - name: startDate
        in: query
        description: Start date to fetch attribution data, YYYY-MM-DD
        required: false
        style: form
        explode: true
        schema:
          type: string
      responses:
        '200':
          description: successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RevenueAttributionAggregate'
        default:
          description: ''
          $ref: '#/components/responses/Error'
      security:
      - oauth2:
        - marketing.campaigns.revenue.read
      - oauth2:
        - marketing.campaigns.revenue.lite.read
      - oauth2:
        - marketing.campaigns.revenue.full.read
  /marketing/campaigns/2026-03/{campaignGuid}/spend:
    post:
      tags:
      - Spend
      summary: Create campaign spend item
      description: Create a new campaign spend item
      operationId: post-/marketing/campaigns/2026-03/{campaignGuid}/spend
      parameters:
      - name: campaignGuid
        in: path
        description: 'The UUID of the campaign, required

          Example: 9dbec438-53e2-4b28-8c0f-38f56574a6e8'
        required: true
        style: simple
        explode: false
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PublicSpendItemInput'
        required: true
      responses:
        '201':
          description: successful operation
          headers:
            Locatio

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# Full source: https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/openapi/hubspot-marketing-campaigns-public-api-api-openapi.yml