> For the complete documentation index, see [llms.txt](https://fusionauth.io/docs/llms.txt)

# Retrieve an API Key | FusionAuth Docs

API documentation for the FusionAuth Retrieve an API Key API.

# Retrieve an API Key

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This API is used to retrieve a single API Key by unique Id. To retrieve a key, an API key with equal or greater permissions must be used.

[!API Key Authentication](https://fusionauth.io/docs/apis/authentication.md#api-key-authentication)

Retrieve an API Key by unique Id

GET/api/api-key/{keyId}

OpenAPI Spec

## Request

### Request Parameters

`apiKeyId`UUIDrequired

The unique Id of the API Key to retrieve.

## Response

The response for this API contains a single API Key. The response is defined below along with an example JSON response.

*Response Codes*

| Code | Description |
| --- | --- |
| 200 | The request was successful. The response will contain a JSON body. |
| 400 | The request was invalid and/or malformed. The response will contain an [Errors](https://fusionauth.io/docs/apis/errors.md) JSON Object with the specific errors. This status will also be returned if a paid FusionAuth license is required and is not present. |
| 401 | You did not supply a valid Authorization header. The header was omitted or your API key was not valid. The response will be empty. See [Authentication](https://fusionauth.io/docs/apis/authentication.md). |
| 404 | The object you requested doesn't exist. The response will be empty. |
| 500 | There was an internal error. A stack trace is provided and logged in the FusionAuth log files. The response will be empty. |

#### Response Body

`apiKey.expirationInstant`LongAvailable since 1.55.0

The expiration [instant](https://fusionauth.io/docs/reference/data-types.md#instants) of this API key. Using an expired API key for [API Authentication](https://fusionauth.io/docs/apis/authentication.md) will result in a 401 response code.

`apiKey.id`UUID

The Id of the API key.

`apiKey.insertInstant`Long

The [instant](https://fusionauth.io/docs/reference/data-types.md#instants) when the API key was added to the FusionAuth database.

`apiKey.ipAccessControlListId`UUIDAvailable since 1.30.0

The Id of the [IP Access Control List](https://fusionauth.io/docs/apis/ip-acl.md) limiting access to this API key.

`apiKey.key`String

The API key value, this is the string value you will use in the Authorization header to [authenticate API](https://fusionauth.io/docs/apis/authentication.md) requests.

If the **apiKey.retrievable** value is `false` then this field will not be returned in the response.

`apiKey.keyManager`Boolean

Indicates whether this key is a key manager. Setting this flag to true allows this key to be used to call these APIs. An attempt to call these APIs with a non-manager key (**keyManager** set to `false`) will always return a HTTP response status code 401.

`apiKey.lastUpdateInstant`Long

The [instant](https://fusionauth.io/docs/reference/data-types.md#instants) when the API key was last updated in the FusionAuth database.

`apiKey.metaData.attributes.description`String

Description of the key.

`apiKey.name`StringAvailable since 1.56.0

The name of the API key.

`apiKey.permissions.endpoints`Object

Endpoint permissions for this key. Each key of the object is an endpoint, with the value being an array of the HTTP methods which can be used against the endpoint. An empty permissions object mean that this is a super key that authorizes this key for all the endpoints.

`apiKey.retrievable`BooleanAvailable since 1.56.0

Indicates whether this key is retrievable. If this value is `false`, the key will not be returned in the API response.

`apiKey.tenantId`String

The unique Id of the Tenant. This value is present if the key is tenant scoped. Tenant scoped keys can only be used to access users and other tenant scoped objects for the specified tenant. This value is read-only once the key is created.

*Example API Key response JSON*

```json
{
  "apiKey": {
    "expirationInstant": 872812800000,
    "id": "b016fa93-e8bc-4b79-b39f-5d37966c0178",
    "insertInstant": 1619119404194,
    "ipAccessControlListId": "eae37b0e-950b-4e92-abcc-d0b310326f66",
    "key": "WHYugARKzum-jHvzCk5-C558EKPaYEECz5k8fDZayIaFiZHRKqy9kaQn",
    "keyManager": false,
    "lastUpdateInstant": 1619120513500,
    "metaData": {
      "attributes": {
        "description": "non-manager key"
      }
    },
    "name": "Awesome API Key",
    "permissions": {
      "endpoints": {
        "/api/application": [
          "DELETE",
          "POST",
          "GET",
          "PUT",
          "PATCH"
        ],
        "/api/application/oauth-configuration": [
          "DELETE",
          "POST",
          "GET",
          "PUT",
          "PATCH"
        ],
        "/api/application/role": [
          "DELETE",
          "POST",
          "GET",
          "PUT",
          "PATCH"
        ]
      }
    },
    "retrievable": true,
    "tenantId": "94f751c5-4883-4684-a817-6b106778edec"
  }
}
```