curl --request GET \
  --url https://your-tenant.bloodhoundenterprise.io/api/v2/extensions \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "extensions": [
      {
        "id": 1,
        "name": "Active Directory",
        "version": "v1.0.0",
        "is_builtin": true
      }
    ]
  }
}