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Update a marketing event by external IDs

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Update a marketing event by external IDs

with HubSpot
Works with AI assistants

Use HubSpot: its Hubspot Basic API lets you update a marketing event by external IDs in a single step (PATCH /marketing/marketing-events/2026-09/events/{externalEventId}). HubSpot also has an MCP server, so an AI assistant like Claude or ChatGPT can do it for you. capabilities.work can help you get signed up and connected.

  • Can I mark a synced event as cancelled using its external ID?
  • How do I change the time of a marketing event my app created?
Say it to your AI assistant
  • Mark event {externalEventId} in account {externalAccountId} cancelled ({eventCancelled}) with props {customProperties}.
  • Move external event {externalEventId} ({externalAccountId}) to start {startDateTime}, props {customProperties}.
For your developer

PATCH /marketing/marketing-events/2026-09/events/{externalEventId} in Hubspot Basic API. Full spec on APIs.io.

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