HubSpot: Create or Update Multiple Marketing Events

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Operation hubspot.marketing_events_batch_upsert_marketing_events

Provider route: POST /marketing/marketing-events/2026-09/events/upsert. Alter supplies the connection’s credentials and routing.

Call through Alter

Install @alter-ai/sdk @alter-ai/hubspot with npm, or alter-sdk-hubspot with pip. Supply your connected customer’s grant ID and the arguments described below.

import { App } from "@alter-ai/sdk";
import { HubSpotIntegration } from "@alter-ai/hubspot";

async function execute(input: Parameters<HubSpotIntegration["marketingEvents"]["batchUpsertMarketingEvents"]>[0]) {
  const app = new App({ apiKey: process.env.ALTER_API_KEY! });
  try {
    const provider = new HubSpotIntegration(app, { grantId: process.env.PROVIDER_GRANT_ID! });
    const call = await provider.marketingEvents.batchUpsertMarketingEvents(input);
    const result = await call.wait();
    return result.bodyJson();
  } finally {
    await app.close();
  }
}

import os
from alter_sdk import App
from alter_sdk_hubspot import HubSpotIntegration

async def execute(arguments):
    async with App(api_key=os.environ["ALTER_API_KEY"]) as app:
        provider = HubSpotIntegration(app, {"grant_id": os.environ["PROVIDER_GRANT_ID"]})
        call = await provider.marketing_events.batch_upsert_marketing_events(arguments)
        result = await call.wait()
        return result.body_json()

Input

Field	Type	Presence	Description and constraints
$	object	Root	Additional keys: not allowed
body	Model	Required within parent	Expand Create or Update Multiple Marketing Events — request body — body

Referenced models: Create or Update Multiple Marketing Events — request body — body

Response

Response media type: application/json. The table describes the pinned successful response. Referenced models link to their complete fields.

Field	Type	Presence	Description and constraints
$	Model	Root	Expand Create or Update Multiple Marketing Events — response body

Referenced models: Create or Update Multiple Marketing Events — response body

Schemas

5 more schemas are linked from the tables above, on the schema pages.

Create or Update Multiple Marketing Events — request body — body

Field	Type	Presence	Description and constraints
$	object	Root
inputs	array	Required within parent	An array of MarketingEventCreateRequestParams objects, each containing the necessary details to create a marketing event. This includes properties such as event name, organizer, and custom properties.
inputs[]	Model	Each item	Expand Create a marketing event — request body — body

Referenced models: Create a marketing event — request body — body

Create or Update Multiple Marketing Events — response body

Field	Type	Presence	Description and constraints
$	object	Root
completedAt	string	Required within parent	Timestamp of when the request was completed. Format: date-time
errors	array	Optional	An array of errors encountered during the batch operation, each item detailing a specific error.
errors[]	Model	Each item	Expand Create or Update Multiple Marketing Events — response body — errors item
links	object	Optional	Result of the request. Additional keys: see wildcard field
links.*	string	Additional keys
numErrors	JSON	Optional
numErrors (anyOf 1)	integer	Alternative	The number of errors that occurred during the request. Format: int32
numErrors (anyOf 2)	string	Alternative	Pattern: ^-?[0-9]+(?:\.[0-9]+)?(?:[eE][+-]?[0-9]+)?$
requestedAt	string	Optional	Timestamp of when the request was sent. Format: date-time
results	array	Required within parent	An array of results from the batch operation, each item representing a response for an individual marketing event.
results[]	Model	Each item	Expand Create or update a marketing event — response body
startedAt	string	Required within parent	Timestamp of when the request started processing. Format: date-time
status	string	Required within parent	Status of the response. Known values: CANCELED, COMPLETE, PENDING, PROCESSING

Referenced models: Create or Update Multiple Marketing Events — response body — errors item, Create or update a marketing event — response body

Create a marketing event — request body — body

Field	Type	Presence	Description and constraints
$	object	Root
customProperties	array	Required within parent	A list of PropertyValues. These can be whatever kind of property names and values you want. However, they must already exist on the HubSpot account's definition of the MarketingEvent Object. If they don't they will be filtered out and not set. In order to do this you'll need to create a new PropertyGroup on the HubSpot account's MarketingEvent object for your specific app and create the Custom Property you want to track on that HubSpot account. Do not create any new default properties on the MarketingEvent object as that will apply to all HubSpot accounts.
customProperties[]	Model	Each item	Expand Create a marketing event — request body — body custom Properties item
endDateTime	string	Optional	The end date and time of the marketing event. Format: date-time
eventCancelled	boolean	Optional	Indicates if the marketing event has been cancelled. Defaults to `false`
eventCompleted	boolean	Optional	Indicates if the marketing event has been completed. Defaults to `false`
eventDescription	string	Optional	The description of the marketing event.
eventName	string	Required within parent	The name of the marketing event.
eventOrganizer	string	Required within parent	The name of the organizer of the marketing event.
eventType	string	Optional	Describes what type of event this is. For example: `WEBINAR`, `CONFERENCE`, `WORKSHOP`
eventUrl	string	Optional	A URL in the external event application where the marketing event can be managed.
externalAccountId	string	Required within parent	The accountId that is associated with this marketing event in the external event application.
externalEventId	string	Required within parent	The id of the marketing event in the external event application.
startDateTime	string	Optional	The start date and time of the marketing event. Format: date-time

Referenced models: Create a marketing event — request body — body custom Properties item

Create or Update Multiple Marketing Events — response body — errors item

Field	Type	Presence	Description and constraints
$	object	Root	Ye olde error
category	string	Required within parent	The category of the error
context	object	Required within parent	The object that contains details of the errors Additional keys: see wildcard field
context.*	array	Additional keys
context.*[]	string	Each item
errors	array	Required within parent	An array of ErrorDetail objects providing further information about the error.
errors[]	Model	Each item	Expand Batch insert events — response body — errors item errors item
id	string	Optional	The ID of the request
links	object	Required within parent	Results of the request Additional keys: see wildcard field
links.*	string	Additional keys
message	string	Required within parent	A human readable message describing the error along with remediation steps where appropriate
status	string	Required within parent	Status of the response
subCategory	object	Optional	The Sub-category of the error

Referenced models: Batch insert events — response body — errors item errors item

Create or update a marketing event — response body

Field	Type	Presence	Description and constraints
$	object	Root
createdAt	string	Required within parent	The creation date and time of the marketing event. Format: date-time
customProperties	array	Required within parent	A list of PropertyValues. These can be whatever kind of property names and values you want. However, they must already exist on the HubSpot account's definition of the MarketingEvent Object. If they don't they will be filtered out and not set. In order to do this you'll need to create a new PropertyGroup on the HubSpot account's MarketingEvent object for your specific app and create the Custom Property you want to track on that HubSpot account. Do not create any new default properties on the MarketingEvent object as that will apply to all HubSpot accounts.
customProperties[]	Model	Each item	Expand Create a marketing event — response body — custom Properties item
endDateTime	string	Optional	The end date and time of the marketing event. Format: date-time
eventCancelled	boolean	Optional	Indicates if the marketing event has been cancelled.
eventCompleted	boolean	Optional	Indicates if the marketing event has been completed.
eventDescription	string	Optional	The description of the marketing event.
eventName	string	Required within parent	The name of the marketing event.
eventOrganizer	string	Required within parent	The name of the organizer of the marketing event.
eventType	string	Optional	The type of the marketing event.
eventUrl	string	Optional	A URL in the external event application where the marketing event can be managed.
id	string	Required within parent	The ID of the marketing event CRM object.
objectId	string	Optional	The ID of the marketing event CRM object.
startDateTime	string	Optional	The start date and time of the marketing event. Format: date-time
updatedAt	string	Required within parent	The update date and time of the marketing event. Format: date-time

Referenced models: Create a marketing event — response body — custom Properties item

Batch insert events — response body — errors item errors item

Field	Type	Presence	Description and constraints
$	object	Root	Represents detailed information about an error that occurred in the API. This component is used to provide additional context and specifics about errors, typically as part of an error response.
code	string	Optional	The status code associated with the error detail
context	object	Optional	Context about the error condition Additional keys: see wildcard field
context.*	array	Additional keys
context.*[]	string	Each item
in	string	Optional	The name of the field or parameter in which the error was found.
message	string	Required within parent	A human readable message describing the error along with remediation steps where appropriate
subCategory	string	Optional	A specific category that contains more specific detail about the error

Create a marketing event — request body — body custom Properties item masked Substrings

Field	Type	Presence	Description and constraints
$	object	Root
substrings	array	Required within parent	An array of masked substring objects, each defining a specific portion of a string to be masked. Each object in the array specifies the start and end positions of the substring to be masked.
substrings[]	Model	Each item	Expand Create a marketing event — request body — body custom Properties item masked Substrings substrings item

Referenced models: Create a marketing event — request body — body custom Properties item masked Substrings substrings item

Policy, approvals and errors

SDK function policy ID: hubspot.marketing_events_batch_upsert_marketing_events. Catalog operation: marketing_events_batch_upsert_marketing_events. Rules can name either ID; function rules distinguish managed calls and conservatively cover raw calls sharing the route. Existing grant permissions and policy rules apply. wait() returns an immediate result or waits for a required approval; it never approves the request itself. Persist the approval ID to resume after a restart.

Provider errors retain their response; JSON decoding raises ProviderAPIError for provider failures. ManagedOperationError identifies contract/input/retention errors. See error handling and provider-specific behavior. Sensitive input may be refused before approval storage. A decoding error never resubmits a write.

Required provider scopes: ["crm.objects.marketing_events.write"]

Official provider source