# Retrieve an Event

Retrieves the details of an event if it was created in the last 30 days. Supply the unique identifier of the event, which might have been delivered to your event destination.

## Returns

## Response attributes

- `id` (string)
  Unique identifier for the event.

- `object` (string, value is "v2.core.event")
  String representing the object’s type. Objects of the same type share the same value of the object field.

- `changes` (object, nullable)
  Before and after changes for the primary related object.

- `context` (string, nullable)
  Authentication context needed to fetch the event or related object.

- `created` (timestamp)
  Time at which the object was created.

- `data` (object, nullable)
  Additional data about the event.

- `livemode` (boolean)
  Has the value `true` if the object exists in live mode or the value `false` if the object exists in test mode.

- `reason` (object, nullable)
  Reason for the event.

  - `reason.request` (object, nullable)
    Information on the API request that instigated the event.

    - `reason.request.id` (string)
      ID of the API request that caused the event.

    - `reason.request.idempotency_key` (string)
      The idempotency key transmitted during the request.

  - `reason.type` (enum)
    Event reason type.
Possible enum values:
    - `request`
      The event was published as the result of an API request.

- `related_object` (object, nullable)
  Object containing the reference to API resource relevant to the event.

  - `related_object.id` (string)
    Unique identifier for the object relevant to the event.

  - `related_object.type` (string)
    Object tag of the resource relevant to the event.

  - `related_object.url` (string)
    URL to retrieve the resource.

- `type` (string)
  The type of the event.

## Error Codes

| HTTP status code | Code      | Description                |
| ---------------- | --------- | -------------------------- |
| 404              | not_found | The resource wasn’t found. |

```curl
curl https://api.stripe.com/v2/core/events/evt_test_65RCjj4EqW1sabcjs2Z16RCMoNQdSQkOWvfL6L5uU2K40u \
  -H "Authorization: Bearer <<YOUR_SECRET_KEY>>" \
  -H "Stripe-Version: 2026-05-27.dahlia"
```

### Response

```json
{
  "id": "evt_test_65RCjj4EqW1sabcjs2Z16RCMoNQdSQkOWvfL6L5uU2K40u",
  "object": "v2.core.event",
  "context": null,
  "created": "2024-09-26T17:46:22.134Z",
  "data": {
    "developer_message_summary": "There is 1 invalid event",
    "reason": {
      "error_count": 1,
      "error_types": [
        {
          "code": "meter_event_no_customer_defined",
          "error_count": 1,
          "sample_errors": [
            {
              "error_message": "Customer mapping key stripe_customer_id not found in payload.",
              "request": {
                "identifier": "cb447754-6880-45c2-8f2f-ef19b6ce81e9"
              }
            }
          ]
        }
      ]
    },
    "validation_end": "2024-09-26T17:46:20.000Z",
    "validation_start": "2024-09-26T17:46:10.000Z"
  },
  "livemode": false,
  "reason": null,
  "related_object": {
    "id": "mtr_test_61RCjiqdTDC91zgip41IqPCzPnxqqSVc",
    "type": "billing.meter",
    "url": "/v1/billing/meters/mtr_test_61RCjiqdTDC91zgip41IqPCzPnxqqSVc"
  },
  "type": "v1.billing.meter.error_report_triggered"
}
```