sm_get_member_growth
Get audience growth
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Get signup cohorts, churn timeline and cohort retention. Use for list-growth and attrition questions. A cohortRetention row is the current status breakdown of members who signed up in that month, not retention at month N after signup; signup month falls back to last-changed or sync time when Mailchimp has no opt-in timestamp. For the audience size trend over time — subscriber counts bucketed by status month over month — use the subscriber-growth series in sm_get_insights_basic; this returns signup cohorts, churn and retention rather than a status trend.
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
| projectId | string | yes | Required. The opaque alphanumeric project identifier of 8 or more characters to scope this request to. Call GET /_api/public/v1/enterprise/projects to list the project IDs available to your API key. Omitting it returns 400 VALIDATION_ERROR. |
Raw JSON schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"type": "object",
"properties": {
"projectId": {
"type": "string",
"minLength": 1,
"description": "Required. The opaque alphanumeric project identifier of 8 or more characters to scope this request to. Call GET /_api/public/v1/enterprise/projects to list the project IDs available to your API key. Omitting it returns 400 VALIDATION_ERROR."
}
},
"required": [
"projectId"
],
"additionalProperties": false
}