# Retrieve a Kafka Topic

With this endpoint you can retrieve details of a specific Kafka topic within a specified Kafka cluster.

## Endpoint

`GET /clusters/{clusterId}/topics/{topicId}`

The `GET /clusters/{clusterId}/topics/{topicId}` endpoint retrieves detailed information about a specific Kafka topic identified by `topicId` within the Kafka cluster specified by `clusterId`. The response includes metadata such as creation and modification dates, ownership details, and current operational state. Additionally, topic properties such as `name`, `replicationFactor`, `numberOfPartitions`, and `logRetention` settings are provided.

Use this endpoint to fetch specific details of Kafka topics, facilitating effective monitoring and management of individual topics within your Kafka cluster.

## Request

```bash
curl -X 'GET' \
  'https://kafka.de-txl.ionos.com/clusters/e69b22a5-8fee-56b1-b6fb-4a07e4205ead/topics/ae085c4c-3626-5f1d-b4bc-cc53ae8267ce' \
--header 'Accept: application/json' \
--header 'Authorization: Bearer $Token'
```

{% tabs %}
{% tab title="Request Header Parameters" %}
To make authenticated requests to the API, the following fields are mandatory in the request header:

| Header Parameters | Required | Type   | Description                                                  |
| ----------------- | -------- | ------ | ------------------------------------------------------------ |
| `Accept`          | yes      | string | Set this to `application/json`.                              |
| `Authorization`   | yes      | string | Provide a header value as `Bearer` followed by your `token`. |
| {% endtab %}      |          |        |                                                              |

{% tab title="Request Path Parameters" %}

| Path Parameters | Required | Type   | Description                                                                                         |
| --------------- | -------- | ------ | --------------------------------------------------------------------------------------------------- |
| `clusterId`     | Yes      | string | <p>The UUID of the Kafka cluster.<br>Example: <code>e69b22a5-8fee-56b1-b6fb-4a07e4205ead</code></p> |
| `topicId`       | Yes      | string | <p>The UUID of the Kafka topic.<br>Example: <code>ae085c4c-3626-5f1d-b4bc-cc53ae8267ce</code></p>   |
| {% endtab %}    |          |        |                                                                                                     |
| {% endtabs %}   |          |        |                                                                                                     |

## Response

**200 Successful operation**

```json
{
  "id": "ae085c4c-3626-5f1d-b4bc-cc53ae8267ce",
  "type": "topic",
  "href": "/clusters/{clusterId}/topics/ae085c4c-3626-5f1d-b4bc-cc53ae8267ce",
  "metadata": {
    "createdDate": "2020-12-10T13:37:50+01:00",
    "createdBy": "ionos:identity:::users/87f9a82e-b28d-49ed-9d04-fba2c0459cd3",
    "createdByUserId": "87f9a82e-b28d-49ed-9d04-fba2c0459cd3",
    "lastModifiedDate": "2020-12-11T13:37:50+01:00",
    "lastModifiedBy": "ionos:identity:::users/87f9a82e-b28d-49ed-9d04-fba2c0459cd3",
    "lastModifiedByUserId": "87f9a82e-b28d-49ed-9d04-fba2c0459cd3",
    "resourceURN": "ionos:<product>:<location>:<contract>:<resource-path>",
    "state": "AVAILABLE"
  },
  "properties": {
    "name": "my-kafka-cluster-topic",
    "replicationFactor": 3,
    "numberOfPartitions": 3,
    "logRetention": {
      "retentionTime": 604800000,
      "segmentBytes": 1073741824
    }
  }
}
```