> Documentation index for AI agents: https://docs.pagerduty.com/llms.txt

# Get Data for an External Data Cache Variable on a Service Event Orchestration

`GET https://api.pagerduty.com/event_orchestrations/services/{service_id}/cache_variables/{cache_variable_id}/data`

Get the data for an `external_data` type Cache Variable for a Service Event Orchestration.

Use External Data type Cache Variables to store string, number, or boolean values via a dedicated API endpoint. These stored values can then be used in conditions or actions in Event Orchestration rules.

For more information see the [Knowledge Base](https://support.pagerduty.com/main/docs/event-orchestration-cache-variables)

Scoped OAuth requires: `services.read`

## Authorization

- **api_key** (apiKey) — `Authorization` header. The API Key with format `Token token=<API_KEY>`

## Path parameters

| Name | Type | Required | Description |
|---|---|---|---|
| `service_id` | string | yes | The service ID. |
| `cache_variable_id` | string | yes | The ID of a Cache Variable. |

## Header parameters

| Name | Type | Required | Description |
|---|---|---|---|
| `Accept` | string | yes | The `Accept` header is used as a versioning header. Default: `application/vnd.pagerduty+json;version=2`. |

## Response 200

The data on an `external_data` type Cache Variable for this Event Orchestration.

### `application/json`

| Field | Type | Required | Description |
|---|---|---|---|
| `cache_variable_data` | string | yes | (String Data) The string value to set on an external data cache variable configured with `data_type: string`. |
| `updated_at` | string (date-time) |  | (String Data) The date/time the cache variable data was last updated. Read-only. |
| `cache_variable_data` | number | yes | (Number Data) The number value to set on an external data cache variable configured with `data_type: number`. |
| `updated_at` | string (date-time) |  | (Number Data) The date/time the cache variable data was last updated. Read-only. |
| `cache_variable_data` | boolean | yes | (Boolean Data) The boolean value to set on an external data cache variable configured with `data_type: boolean`. |
| `updated_at` | string (date-time) |  | (Boolean Data) The date/time the cache variable data was last updated. Read-only. |

Example: Response Example: String data

```json
{
  "cache_variable_data": "Hello World!",
  "updated_at": "2021-11-18T16:42:01Z"
}
```

Example: Response Example: Number data

```json
{
  "cache_variable_data": 45.348,
  "updated_at": "2021-11-18T16:42:01Z"
}
```

Example: Response Example: Boolean data

```json
{
  "cache_variable_data": true,
  "updated_at": "2021-11-18T16:42:01Z"
}
```

## Response 400

Caller provided invalid arguments. Please review the response for error details. Retrying with the same arguments will *not* work.

### `application/json`

| Field | Type | Required | Description |
|---|---|---|---|
| `error` | object |  |  |
| `error.code` | integer |  | Read-only. |
| `error.message` | string |  | Error message string. Read-only. |
| `error.errors` | array of string |  | Read-only. |

## Response 401

Caller did not supply credentials or did not provide the correct credentials.
If you are using an API key, it may be invalid or your Authorization header may be malformed.

### `application/json`

| Field | Type | Required | Description |
|---|---|---|---|
| `error` | object |  |  |
| `error.code` | integer |  | Read-only. |
| `error.message` | string |  | Error message string. Read-only. |
| `error.errors` | array of string |  | Read-only. |

## Response 403

Caller is not authorized to view the requested resource.
While your authentication is valid, the authenticated user or token does not have permission to perform this action.

### `application/json`

| Field | Type | Required | Description |
|---|---|---|---|
| `error` | object |  |  |
| `error.code` | integer |  | Read-only. |
| `error.message` | string |  | Error message string. Read-only. |
| `error.errors` | array of string |  | Read-only. |

## Response 404

The requested resource was not found.

### `application/json`

| Field | Type | Required | Description |
|---|---|---|---|
| `error` | object |  |  |
| `error.code` | integer |  | Read-only. |
| `error.message` | string |  | Error message string. Read-only. |
| `error.errors` | array of string |  | Read-only. |

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