---
title: "List Streams Group Subtopologies"
method: GET
path: "/kafka/v3/clusters/{cluster_id}/streams-groups/{group_id}/subtopologies"
tags: ["Streams Group (v3)"]
---

# List Streams Group Subtopologies

`GET /kafka/v3/clusters/{cluster_id}/streams-groups/{group_id}/subtopologies`

## Request

- Base URL: `https://pkc-00000.region.provider.confluent.cloud`
- URL: `https://pkc-00000.region.provider.confluent.cloud/kafka/v3/clusters/{cluster_id}/streams-groups/{group_id}/subtopologies`
- Auth: one of:
  - HTTP basic
  - OAuth 2
    - Client credentials
    - Token URL: `https://api.confluent.cloud/sts/v1/oauth2/token`

[![Early Access](https://img.shields.io/badge/Lifecycle%20Stage-Early%20Access-%2345c6e8)](#section/Versioning/API-Lifecycle-Policy)
Return a list of subtopologies that belong to the specified streams group.

## Response `200`

The list of subtoplogies of the streams group

- StreamsGroupSubtopologyDataList: The list of Streams group subtopologies.
  - `kind` string, required
  - `metadata` ResourceCollectionMetadata, required
    - `self` string, required
    - `next` string, nullable
  - `data` StreamsGroupSubtopologyData[], required: The array of Streams group subtopology details.
    - `kind` string, required
    - `metadata` ResourceMetadata, required
      - `self` string, required
      - `resource_name` string, nullable
    - `cluster_id` string, required: The unique identifier of the Kafka cluster.
    - `group_id` string, required: The unique identifier of the Streams group.
    - `subtopology_id` string, required: The unique identifier of the Streams subtopology.
    - `source_topics` string[], required: The list of source topics for the subtopology.

## Other responses

- `400`: Indicates a bad request error. It could be caused by an unexpected request body format or other forms of request validation failure.
- `401`: Indicates a client authentication error. Kafka authentication failures will contain error code 40101 in the response body.
- `403`: Indicates a client authorization error. Kafka authorization failures will contain error code 40301 in the response body.
- `429`: Indicates that a rate limit threshold has been reached, and the client should retry again later.
- `5XX`: A server-side problem that might not be addressable from the client side. Retriable Kafka errors will contain error code 50003 in the response body.

---

[API](https://skmtc.dev/confluent/apis/confluent-cloud-apis.md) - [All operations](https://skmtc.dev/confluent/apis/confluent-cloud-apis/llms.txt) - [OpenAPI document](https://skmtc.dev/confluent/apis/confluent-cloud-apis/revisions/018ddeaf203e?raw)