---
title: "List Consumer Lags"
method: GET
path: "/clusters/{cluster_id}/consumer-groups/{consumer_group_id}/lags"
tags: ["Consumer Group (v3)"]
---

# List Consumer Lags

`GET /clusters/{cluster_id}/consumer-groups/{consumer_group_id}/lags`

[![Generally Available](https://img.shields.io/badge/Lifecycle%20Stage-Generally%20Available-%2345c6e8)](#section/Versioning/API-Lifecycle-Policy) [![Available in dedicated clusters only](https://img.shields.io/badge/-Available%20in%20dedicated%20clusters%20only-%23bc8540)](https://docs.confluent.io/cloud/current/clusters/cluster-types.html#dedicated-cluster)

Return a list of consumer lags of the consumers belonging to the
specified consumer group.

## Response `200`

The list of consumer lags.

- ConsumerLagDataList
  - `kind` string, required
  - `metadata` ResourceCollectionMetadata, required
    - `self` string, required
    - `next` string, nullable
  - `data` ConsumerLagData[], required
    - `kind` string, required
    - `metadata` ResourceMetadata, required
      - `self` string, required
      - `resource_name` string, nullable
    - `cluster_id` string, required
    - `consumer_group_id` string, required
    - `topic_name` string, required
    - `partition_id` integer, required
    - `current_offset` integer, required
    - `log_end_offset` integer, required
    - `lag` integer, required
    - `consumer_id` string, required
    - `instance_id` string, nullable
    - `client_id` string, required

## 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.

## Changes

- **2023-08-08** (v3) `25e5259d1722` — 1 breaking, 2 info
  - removed the media type `text/plain` for the response with the status `400`
  - api operation id `listKafkaV3ConsumerLags` removed and replaced with `listKafkaConsumerLags`
  - added the non-success response with the status `403`
- **2023-08-08** (v3) `1be42847ed21` — 3 info
  - api operation id `listKafkaConsumerLags` removed and replaced with `listKafkaV3ConsumerLags`
  - added the media type `text/plain` for the response with the status `400`
  - removed the non-success response with the status `403`
- **2023-03-10** (v3) `bb1cdf42f052` — 1 breaking, 2 info
  - removed the media type `text/plain` for the response with the status `400`
  - api operation id `listKafkaV3ConsumerLags` removed and replaced with `listKafkaConsumerLags`
  - added the non-success response with the status `403`
- **2022-03-22** (v3) `7500cc59fcff` — 6 info
  - api operation id `listKafkaV3ConsumerLags` was added
  - api tag `Consumer Group (v3)` added
  - api tag `Consumer Group` removed
  - added the non-success response with the status `400`
  - …2 more
- …earlier changes not shown

[Full history](https://skmtc.dev/confluentinc/apis/rest-admin-api/changes/clusters/:cluster_id/consumer-groups/:consumer_group_id/lags/get.md)

---

[API](https://skmtc.dev/confluentinc/apis/rest-admin-api.md) · [All operations](https://skmtc.dev/confluentinc/apis/rest-admin-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/confluentinc/rest-admin-api/revisions/e783c1a5e2bd/schema)