curl --request GET \
  --url https://api.vantage.sh/v2/cost_alerts/{cost_alert_token}/events \
  --header 'Authorization: Bearer <token>'

{
  "links": {
    "self": "https://api.vantage.sh/v2/cost_alerts/cstm_alrt_rl_71cacf1cf755fe36/events",
    "first": "https://api.vantage.sh/v2/cost_alerts/cstm_alrt_rl_71cacf1cf755fe36/events?page=1",
    "next": null,
    "last": "https://api.vantage.sh/v2/cost_alerts/cstm_alrt_rl_71cacf1cf755fe36/events?page=1",
    "prev": null
  },
  "cost_alert_events": [
    {
      "token": "cstm_alrt_evnt_87124a0f2989837b",
      "created_at": "2025-04-08T17:39:30Z",
      "triggered_at": "2025-04-10T17:39:30Z",
      "description": "Day over day costs for aws and storage increased by $500.0.",
      "alert_type": "change_in_cost",
      "metadata": {
        "change_in_cost": "500.0",
        "groupings": [
          "aws",
          "storage"
        ]
      },
      "report_token": "rprt_e9f27fc1c3b68204",
      "alert_token": "cstm_alrt_rl_71cacf1cf755fe36"
    },
    {
      "token": "cstm_alrt_evnt_5c67b34433ea6e97",
      "created_at": "2025-04-09T17:39:30Z",
      "triggered_at": "2025-04-10T17:39:30Z",
      "description": "Day over day costs for aws and storage increased by $500.0.",
      "alert_type": "change_in_cost",
      "metadata": {
        "change_in_cost": "500.0",
        "groupings": [
          "aws",
          "storage"
        ]
      },
      "report_token": "rprt_1bdc694530d0b3d6",
      "alert_token": "cstm_alrt_rl_71cacf1cf755fe36"
    }
  ]
}