Get a custom action's functions of one type
One step with HubSpot. We can help you get access.
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Get a custom action's functions of one type
with HubSpot
Works with AI assistants
Use HubSpot: its Automation Actions V4 Functions API lets you get a custom action's functions of one type in a single step (GET /automation/actions/2026-09/{appId}/{definitionId}/functions/{functionType}). 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 fetch just the pre-action execution function for a custom workflow action?
- What function is registered for a particular function type on my action definition?
Say it to your AI assistant
- Get the {functionType} functions for action definition {definitionId} in app {appId}.
- Filter app {appId}'s action {definitionId} functions down to type {functionType}.
For your developer
GET /automation/actions/2026-09/{appId}/{definitionId}/functions/{functionType} in Automation Actions V4 Functions API. Full spec on APIs.io.