curl --request GET \
  --url https://api.devin.ai/v1/sessions \
  --header 'Authorization: Bearer <token>'

{
  "sessions": [
    {
      "session_id": "devin-xxx",
      "status": "running",
      "title": "Review PR #123",
      "created_at": "2024-01-01T00:00:00Z",
      "updated_at": "2024-01-01T00:01:00Z",
      "snapshot_id": null,
      "playbook_id": null,
      "pull_request": {
        "url": "https://github.com/example/repo/pull/123"
      },
      "structured_output": "Task completed successfully",
      "status_enum": "working"
    }
  ]
}