# List All Kafka Topics

### List all Kafka Topics

This endpoint lets you fetch a list of all Kafka topics within a specified Kafka cluster.

### Endpoint

`GET /clusters/{clusterId}/topics`

The `GET /clusters/{clusterId}/topics` endpoint retrieves a collection of all Kafka topics within the specified Kafka cluster identified by `clusterId`. Each topic includes detailed metadata such as creation and modification dates, ownership details, and current operational state. Topic properties like name, replicationFactor, numberOfPartitions, and logRetention settings are also provided.

Use this endpoint to fetch and monitor all Kafka topics within your environment, enabling efficient management and monitoring of data streams and event processing.

### Request

```bash
curl -X 'GET' \
  'https://kafka.de-txl.ionos.com/clusters/e69b22a5-8fee-56b1-b6fb-4a07e4205ead/topics' \
--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> |
| {% endtab %}    |          |        |                                                                                                     |
| {% endtabs %}   |          |        |                                                                                                     |

### Response

**200 Successful operation**

```json
{
  "id": "7c1fe82d-a1ea-55fc-a744-12fad4180eef",
  "type": "collection",
  "href": "/clusters/{clusterId}/topics",
  "items": [
    {
      "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
        }
      }
    }
  ]
}
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.ionos.com/cloud/data-analytics/kafka/api-howtos/fetch-all-topics.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.