curl --request GET \
  --url https://api.devin.ai/v3/organizations/{org_id}/metrics/sessions \
  --header 'Authorization: Bearer <token>'

{
  "avg_acus_per_session": 123,
  "sessions_created_by_origin": {
    "api": 0,
    "jira": 0,
    "linear": 0,
    "slack": 0,
    "teams": 0,
    "webapp": 0
  },
  "sessions_created_by_size": {
    "l": 0,
    "m": 0,
    "s": 0,
    "xl": 0,
    "xs": 0
  },
  "sessions_created_count": 123,
  "sessions_created_with_playbook_count": 123,
  "sessions_created_with_search_count": 123,
  "sessions_with_merged_prs_by_size": {
    "l": 0,
    "m": 0,
    "s": 0,
    "xl": 0,
    "xs": 0
  },
  "sessions_with_merged_prs_count": 123
}