{id}

Deprecated, no dateSubscribe to Mailchimp Marketing APIShare

Mailchimp Marketing API deprecated GET /3.0/lists/{id}, query parameter include_total_contacts without giving a shutdown date yet.

Calls it hits

GET /3.0/lists/{id}
query parameter include_total_contacts

What to use instead of these calls

Read the audience contact count from the /audiences endpoints.

The /audiences endpoints are in beta.

In Mailchimp Marketing API's words

Deprecated. Return the total_contacts field in the stats response, which contains an approximate count of subscribed, unsubscribed, and transactional contacts. For a complete audience contact count, use the /audiences endpoint instead.

Mailchimp Marketing API, Announcement

Facts

API: Mailchimp Marketing API *.api.mailchimp.com
Kind: Parameter removal
Takes effect: No date given yet
Calls after that day: Fail
Source: Announcement
Last updated: November 5, 2026
Verified: November 6, 2026, against Mailchimp Marketing API's own pages

Questions

When does this change take effect?

Mailchimp Marketing API deprecated GET /3.0/lists/{id}, query parameter include_total_contacts without giving a shutdown date yet.

Do these calls still work?

Yes, they still work: Mailchimp Marketing API has not given a shutdown date yet.

How do I find the calls this hits in my code?

Okapi reads your repository, finds the calls this change hits and opens a pull request with the fix. It never commits to your branches: every change comes as a pull request you review.

Is your code calling this?

Okapi finds the calls this change hits in your repo and opens the pull request with the fix.

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