# HubSpot Events Manage Event Definitions API

**Canonical:** https://apis.io/apis/hubspot/hubspot-events-manage-event-definitions-api/  
**Provider:** HubSpot — https://apis.io/providers/hubspot/  
**Base URL:** https://api.hubapi.com  
**Documentation:** https://developers.hubspot.com/docs/api-reference/latest/events/define-events/guide

HubSpot Events Manage Event Definitions API is one of 144 APIs that [HubSpot](https://apis.io/providers/hubspot/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. This API exposes 692 JSON Schema definitions. Tagged areas include Events, Manage, Event, and Definitions. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, code examples, and 692 JSON Schemas.

HubSpot Events Manage Event Definitions — 9 operation(s) from HubSpot's published OpenAPI.

## Operations (9)

| Method | Path | Summary |
|---|---|---|
| GET | `/events/v3/2026-09/event-definitions` | Retrieve event definitions |
| POST | `/events/v3/2026-09/event-definitions` | Create custom event definition |
| GET | `/events/v3/2026-09/event-definitions/{eventName}` | Retrieve a custom event definition |
| DELETE | `/events/v3/2026-09/event-definitions/{eventName}` | Delete an event definition |
| PATCH | `/events/v3/2026-09/event-definitions/{eventName}` | Update a custom event definition |
| POST | `/events/v3/2026-09/event-definitions/{eventName}/property` | Create a property for an event definition |
| DELETE | `/events/v3/2026-09/event-definitions/{eventName}/property/{propertyName}` | Delete a property from a custom event definition |
| PATCH | `/events/v3/2026-09/event-definitions/{eventName}/property/{propertyName}` | Update an existing custom event property |
| POST | `/events/v3/2026-09/send/batch` | — |

## Machine-readable artifacts (1066)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/openapi/hubspot-events-manage-event-definitions-api-openapi.yml
- **Documentation** — https://developers.hubspot.com/docs/api/cms/domains
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/json-schema/domains-api-domain-collection-response-schema.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/json-schema/domains-api-domain-schema.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/json-schema/domains-api-forward-paging-schema.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/json-schema/domains-api-next-page-schema.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/json-structure/domains-api-domain-collection-response-structure.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/json-structure/domains-api-domain-structure.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/json-structure/domains-api-forward-paging-structure.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/json-structure/domains-api-next-page-structure.json
- **CodeExamples** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/examples/domains-api-domain-collection-response-example.json
- **CodeExamples** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/examples/domains-api-domain-example.json
- **CodeExamples** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/examples/domains-api-forward-paging-example.json
- **CodeExamples** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/examples/domains-api-next-page-example.json
- **GraphQL** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/graphql/hubspot-graphql.md
- **Documentation** — https://developers.hubspot.com/docs/api/cms/source-code
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/json-schema/source-code-api-action-response-schema.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/json-schema/source-code-api-asset-file-metadata-schema.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/json-schema/source-code-api-file-extract-request-schema.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/json-schema/source-code-api-file-upload-request-schema.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/json-schema/source-code-api-task-locator-schema.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/json-schema/source-code-api-validation-error-schema.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/json-schema/source-code-api-validation-result-schema.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/json-schema/source-code-api-validation-warning-schema.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/json-structure/source-code-api-action-response-structure.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/json-structure/source-code-api-asset-file-metadata-structure.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/json-structure/source-code-api-file-extract-request-structure.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/json-structure/source-code-api-file-upload-request-structure.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/json-structure/source-code-api-task-locator-structure.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/json-structure/source-code-api-validation-error-structure.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/json-structure/source-code-api-validation-result-structure.json
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/json-structure/source-code-api-validation-warning-structure.json
- **CodeExamples** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/examples/source-code-api-action-response-example.json
- **CodeExamples** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/examples/source-code-api-asset-file-metadata-example.json
- **CodeExamples** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/examples/source-code-api-file-extract-request-example.json
- **CodeExamples** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/examples/source-code-api-file-upload-request-example.json
- **CodeExamples** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/examples/source-code-api-task-locator-example.json
- **CodeExamples** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/examples/source-code-api-validation-error-example.json
- **CodeExamples** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/examples/source-code-api-validation-result-example.json
- **CodeExamples** — https://raw.githubusercontent.com/api-evangelist/hubspot/refs/heads/main/examples/source-code-api-validation-warning-example.json
- …and 1026 more, listed in full on the page.

## Other HubSpot APIs (12)

- [HubSpot URL Redirects API](https://apis.io/apis/hubspot/hubspot-url-redirects-api/)
- [HubSpot Pipelines API](https://apis.io/apis/hubspot/hubspot-pipelines-api/)
- [HubSpot Products API](https://apis.io/apis/hubspot/hubspot-products-api/)
- [HubSpot Line Items API](https://apis.io/apis/hubspot/hubspot-line-items-api/)
- [HubSpot Quotes API](https://apis.io/apis/hubspot/hubspot-quotes-api/)
- [HubSpot CRM Properties API](https://apis.io/apis/hubspot/hubspot-crm-properties-api/)
- [HubSpot Owners API](https://apis.io/apis/hubspot/hubspot-owners-api/)
- [HubSpot CRM Imports API](https://apis.io/apis/hubspot/hubspot-crm-imports-api/)
- [HubSpot Custom Objects API](https://apis.io/apis/hubspot/hubspot-custom-objects-api/)
- [HubSpot Marketing Events API](https://apis.io/apis/hubspot/hubspot-marketing-events-api/)
- [HubSpot Forms API](https://apis.io/apis/hubspot/hubspot-forms-api/)
- [HubSpot Workflows API](https://apis.io/apis/hubspot/hubspot-workflows-api/)

## Tags

Events, Manage, Event, Definitions

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/hubspot/hubspot-events-manage-event-definitions-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/hubspot/.