Close API · Endpoint removal
is_group_number on GET /api/v1/phone_number/ is deprecated
Deprecated, no date
Close API deprecated GET /api/v1/phone_number, query parameter is_group_number without giving a shutdown date yet.
What to use instead of these calls
Stop filtering on is_group_number; filter by participant_user_id, which also returns the group numbers a user belongs to.
Calls it hits
GET /api/v1/phone_numberquery parameter is_group_number
The user_id and is_group_number fields on the Phone Number API are deprecated, both as query filters when listing phone numbers and as fields in phone number responses.
Facts
- API
- Close API
api.close.com - Kind
- Endpoint removal
- Announced
- July 21, 2026
- Takes effect
- No date given yet
- Calls after that day
- Fail
- Source
- Announcement
- Last updated
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