Update a custom event definition
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Update a custom event definition
with HubSpot
Works with AI assistants
Use HubSpot: its Hubspot Basic API lets you update a custom event definition in a single step (PATCH /events/v3/2026-09/event-definitions/{eventName}). 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 relabel a custom event or change its timeline template?
- How do I reorder a custom event's properties?
Say it to your AI assistant
- Set property order on event {eventName} to {propertyOrder}.
- Relabel custom event {eventName} as {label} with property order {propertyOrder}.
For your developer
PATCH /events/v3/2026-09/event-definitions/{eventName} in Hubspot Basic API. Full spec on APIs.io.