If you are talking about the metadata / attributes stored within the Activity itself, this endpoint will give you those details: GET /rest/v1/activities/types.json http://developers.marketo.com/rest-api/endpoint-reference/lead-database-endpoint-reference/#/Activities/getAllActivityTy… Sample output for the Ids you mentioned: { "id": 113, "name": "Add to Nurture", "description": "Add a lead to a nurture program", "primaryAttribute": { "name": "Program ID", "dataType": "integer" }, "attributes": [ { "name": "Track ID", "dataType": "integer" } ] }, { "id": 114, "name": "Change Nurture Track", "description": "Change the nurture track for a lead", "primaryAttribute": { "name": "Program ID", "dataType": "integer" }, "attributes": [ { "name": "New Track ID", "dataType": "integer" }, { "name": "Previous Track ID", "dataType": "integer" } ] }, { "id": 115, "name": "Change Nurture Cadence", "description": "Change the nurture cadence for a lead", "primaryAttribute": { "name": "Program ID", "dataType": "integer" }, "attributes": [ { "name": "New Nurture Cadence", "dataType": "string" }, { "name": "Previous Nurture Cadence", "dataType": "string" } ] } If you're not a developer, you can use Postman to run quick tests like this. hope it helps!
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