> ## Documentation Index
> Fetch the complete documentation index at: https://upstash-fix-issues-on-docs.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# List Kafka Topics in Cluster

> This endpoint list kafka topics in a cluster.

## URL Parameters

<ParamField path="id" type="string" required>
  The ID of the Kafka cluster
</ParamField>

## Response Parameters

<ResponseField name="topic_id" type="string">
  ID of the new kafka topic
</ResponseField>

<ResponseField name="topic_name" type="string">
  Name of the new kafka topic
</ResponseField>

<ResponseField name="cluster_id" type="string">
  ID of the created Kafka cluster
</ResponseField>

<ResponseField name="region" type="string">
  The region the Kafka cluster is deployed in
</ResponseField>

<ResponseField name="creation_time" type="int">
  Cluster creation timestamp
</ResponseField>

<ResponseField name="state" type="string">
  State of the topic\ **Options**: `active` or `deleted`
</ResponseField>

<ResponseField name="partitions" type="int">
  Number of partitions the topic has
</ResponseField>

<ResponseField name="multizone" type="boolean">
  Whether the multizone replication is enabled for the cluster or not
</ResponseField>

<ResponseField name="tcp_endpoint" type="string">
  TCP endpoint to connect to the Kafka cluster
</ResponseField>

<ResponseField name="rest_endpoint" type="string">
  REST endpoint to connect to the Kafka cluster
</ResponseField>

<ResponseField name="username" type="string">
  Cleanup policy to be used in the topic\ **Options**: `compact` or `delete`
</ResponseField>

<ResponseField name="password" type="string">
  Password to be used in authenticating to the cluster
</ResponseField>

<ResponseField name="cleanup_policy" type="int">
  Max total number of partitions allowed in the cluster
</ResponseField>

<ResponseField name="max_retention_size" type="int">
  Max retention size will be allowed to topics in the cluster
</ResponseField>

<ResponseField name="max_retention_time" type="int">
  Max retention time will be allowed to topics in the cluster
</ResponseField>

<ResponseField name="max_message_size" type="int">
  Max message size will be allowed in topics in the cluster
</ResponseField>

<RequestExample>
  ```shell curl
  curl -X GET \
    https://api.upstash.com/v2/kafka/topics/:id \
    -u 'EMAIL:API_KEY'
  ```

  ```python Python
  import requests

  response = requests.get('https://api.upstash.com/v2/kafka/topics/:id', auth=('EMAIL', 'API_KEY'))
  response.content
  ```

  ```go Go
  client := &http.Client{}
  req, err := http.NewRequest("GET", "https://api.upstash.com/v2/kafka/topics/:id", nil)
  if err != nil {
      log.Fatal(err)
  }
  req.SetBasicAuth("email", "api_key")
  resp, err := client.Do(req)
  if err != nil {
      log.Fatal(err)
  }
  bodyText, err := ioutil.ReadAll(resp.Body)
  if err != nil {
      log.Fatal(err)
  }
  fmt.Printf("%s\n", bodyText);
  ```
</RequestExample>

<ResponseExample>
  ```json 200 OK
  [
      {
          "topic_id": "0f458c88-2dc6-4f69-97bb-05060e0be934",
          "topic_name": "test-kafka-topic",
          "cluster_id": "9bc0e897-cbd3-4997-895a-fd77ad00aec9",
          "region": "eu-west-1",
          "creation_time": 1643981720,
          "state": "active",
          "partitions": 1,
          "multizone": true,
          "tcp_endpoint": "sharing-mastodon-12819-eu1-kafka.upstashdev.com",
          "rest_endpoint": "sharing-mastodon-12819-eu1-rest-kafka.upstashdev.com",
          "username": "c2hhcmluZy1tYXN0b2Rvbi0xMjgxOSRV1ipriSBOwd0PHzw2KAs_cDrTXzvUKIs",
          "password": "eu8K3rYRS-ma0AsINDo7MMemmHjjRSldHJcG3c1LUMZkFfdSf9u_Kd4xCWO9_oQc",
          "cleanup_policy": "delete",
          "retention_size": 4568,
          "retention_time": 1235,
          "max_message_size": 8913
      }
  ]
  ```
</ResponseExample>