HubSpot Marketing Campaigns Public API API is one of 144 APIs that HubSpot publishes on the APIs.io network, described by a machine-readable OpenAPI specification.
This API exposes 692 JSON Schema definitions.
Tagged areas include Marketing, Campaigns, Public, and API. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, code examples, and 692 JSON Schemas.
This API exposes
24 operations
across 16 paths,
organized into 6 resource areas,
and defines 35 schemas.
It is described by OpenAPI 3.0.1, at version 2026-03.
Requests are made against a single base URL, https://api.hubapi.com.
24 operations16 paths35 schemas4 DELETE9 GET1 PATCH7 POST3 PUT
Metadata
The identity and technical contract details declared by the specification.
Specification
OpenAPI 3.0.1
API Version
2026-03
Base URL
https://api.hubapi.com
Authentication
API Key, OAuth 2.0, API Key, API Key
Resource Areas
6
Authentication & Security 4
HubSpot Marketing Campaigns Public API API declares
4 security schemes
for authenticating requests.
An API key is passed in the query as hapikey (developer_hapikey).
It supports OAuth 2.0 (oauth2) using the authorizationCode flow, exposing 3 scopes.
An API key is passed in the header as private-app (private_apps).
An API key is passed in the header as private-app-legacy (private_apps_legacy).
Paths & Operations 24
Across 16 paths, the API surfaces 24 operations — 4 DELETE, 9 GET, 1 PATCH, 7 POST, 3 PUT. They span 6 resource areas: Basic, Batch, Assets, Budget, Metrics, Spend. Each is listed below with its method, path, parameters, and response codes.
The contract defines 35 schemas that model the data the API accepts and returns. The most detailed are BatchResponsePublicCampaignWithAssetsWithErrors (8 properties), StandardError (8 properties), BatchResponsePublicCampaignWithErrors (8 properties), PublicBudgetItem (7 properties). Each schema is shown below with its type and property counts.
Represents an error response returned by the API when an operation fails. This component is used in various endpoints to provide detailed information about the…
7 properties3 required
ErrorDetail
object
Represents detailed information about an error that occurred in the API. This component is used to provide additional context and specifics about errors, typic…
5 properties1 required
ForwardPaging
object
Paging information for forward-only pagination. Contains the next page reference when more results are available; omitted or empty on the last page.
1 property
MetricsCounters
object
4 properties4 required
NextPage
object
Specifies the paging information needed to retrieve the next set of results in a paginated API response
2 properties1 required
Paging
object
2 properties
PreviousPage
object
specifies the paging information needed to retrieve the previous set of results in a paginated API response
2 properties1 required
PublicBudgetItem
object
7 properties6 required
PublicBudgetItemInput
object
4 properties3 required
PublicBudgetTotals
object
6 properties3 required
PublicBusinessUnit
object
1 property1 required
PublicCampaign
object
5 properties5 required
PublicCampaignAsset
object
3 properties1 required
PublicCampaignBatchUpdateItem
object
2 properties2 required
PublicCampaignDeleteInput
object
1 property1 required
PublicCampaignInput
object
1 property1 required
PublicCampaignReadInput
object
1 property1 required
PublicCampaignWithAssets
object
6 properties6 required
PublicSpendItem
object
7 properties6 required
PublicSpendItemInput
object
4 properties3 required
RevenueAttributionAggregate
object
5 properties
StandardError
object
Ye olde error
8 properties6 required
Specification
The full machine-readable OpenAPI contract behind this narrative.
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