Kafka ConsumerGroupDescribe Request Wire Format v1 — Binary Protocol Layout

What is ConsumerGroupDescribe?

Describes consumer groups using the new protocol (KIP-848) via kafka-consumer-groups.sh --describe. Returns per-member assignment details with the group epoch. A rapidly incrementing epoch means members are joining/leaving frequently, which is normal during scaling but abnormal in steady state.

Schema
{
  "GroupIds": [string],
  "IncludeAuthorizedOperations": bool
}

Example
{
  "GroupIds": ["value-1", "value-2"],
  "IncludeAuthorizedOperations": 2
}