A Cohort object looks like:

// A named group in a Canvas account.
{
  // the ID of the cohort
  "id": 4002,
  // the root account at the top of the account hierarchy the cohort is placed in
  "root_account_id": 1,
  // the root cohort of this cohort's tree; equal to id when the cohort is itself
  // a root
  "root_cohort_id": 4000,
  // the account the cohort is placed in, a root account or a sub-account
  "account_id": 1,
  // the cohort one level above this one, or null for a root cohort
  "parent_cohort_id": 4000,
  // the name of the cohort
  "name": "Mercy General Hospital",
  // free-text description of the cohort
  "description": "Acute care hospitals in the Mercy network.",
  // level in the hierarchy; a root cohort is 1
  "depth": 2,
  // the status of the cohort
  "workflow_state": "active",
  // the unique SIS identifier within the root account
  "sis_source_id": "HS-MERCY-GEN",
  // the SIS import that last touched the cohort, if any
  "sis_batch_id": 12,
  // fields last changed outside SIS; a later SIS import leaves these alone
  "stuck_sis_fields": ["name"],
  // when the cohort was created
  "created_at": "2026-01-15T10:00:00Z",
  // when the cohort was last updated
  "updated_at": "2026-01-15T10:00:00Z",
  // the number of active members; present with include[]=member_count
  "member_count": 25,
  // the number of active leaders; present with include[]=leader_count
  "leader_count": 2,
  // the number of active cohorts one level below; present with
  // include[]=child_count
  "child_count": 3,
  // the chain of cohorts from the root down to the parent, root first; present
  // with include[]=ancestors
  "ancestors": null
}