Protocol APIs

The Kafka protocol APIs this broker advertises in its ApiVersions (key 18) response, with the supported version range for each. The wire protocol is specified by the Apache Kafka protocol guide; the Spec column links each API to the KIP (or protocol-guide section) that defines it.

API Key	Name	Min Version	Max Version	Spec
0	Produce	0	13	Protocol guide
1	Fetch	0	18	Protocol guide
2	ListOffsets	1	11	Protocol guide
3	Metadata	0	13	Protocol guide
8	OffsetCommit	2	10	Protocol guide
9	OffsetFetch	1	10	Protocol guide
10	FindCoordinator	0	6	Protocol guide
11	JoinGroup	0	9	Protocol guide
12	Heartbeat	0	4	Protocol guide
13	LeaveGroup	0	5	Protocol guide
14	SyncGroup	0	5	Protocol guide
15	DescribeGroups	0	6	Protocol guide
16	ListGroups	0	5	Protocol guide
17	SaslHandshake	0	1	Protocol guide
18	ApiVersions	0	4	Protocol guide
19	CreateTopics	2	7	Protocol guide
20	DeleteTopics	1	6	Protocol guide
21	DeleteRecords	0	2	Protocol guide
22	InitProducerId	0	6	KIP-98
23	OffsetForLeaderEpoch	2	4	Protocol guide
24	AddPartitionsToTxn	0	5	KIP-98
25	AddOffsetsToTxn	0	4	KIP-98
26	EndTxn	0	5	KIP-98
27	WriteTxnMarkers	1	2	KIP-98
28	TxnOffsetCommit	0	5	KIP-98
29	DescribeAcls	1	3	Protocol guide
30	CreateAcls	1	3	Protocol guide
31	DeleteAcls	1	3	Protocol guide
32	DescribeConfigs	1	4	Protocol guide
33	AlterConfigs	0	2	Protocol guide
34	AlterReplicaLogDirs	1	2	Protocol guide
35	DescribeLogDirs	1	5	Protocol guide
36	SaslAuthenticate	0	2	Protocol guide
37	CreatePartitions	0	3	Protocol guide
38	CreateDelegationToken	1	3	Protocol guide
39	RenewDelegationToken	1	2	Protocol guide
40	ExpireDelegationToken	1	2	Protocol guide
41	DescribeDelegationToken	1	3	Protocol guide
42	DeleteGroups	0	2	Protocol guide
43	ElectLeaders	0	2	Protocol guide
44	IncrementalAlterConfigs	0	1	Protocol guide
45	AlterPartitionReassignments	0	1	Protocol guide
46	ListPartitionReassignments	0	0	Protocol guide
47	OffsetDelete	0	0	Protocol guide
48	DescribeClientQuotas	0	1	Protocol guide
49	AlterClientQuotas	0	1	Protocol guide
50	DescribeUserScramCredentials	0	0	Protocol guide
51	AlterUserScramCredentials	0	0	Protocol guide
55	DescribeQuorum	0	2	KIP-595
56	AlterPartition	2	3	KIP-595
57	UpdateFeatures	0	2	Protocol guide
59	FetchSnapshot	0	1	KIP-630
60	DescribeCluster	0	2	Protocol guide
61	DescribeProducers	0	0	Protocol guide
63	BrokerHeartbeat	0	2	KIP-631
64	UnregisterBroker	0	0	KIP-631
65	DescribeTransactions	0	0	Protocol guide
66	ListTransactions	0	2	Protocol guide
68	ConsumerGroupHeartbeat	0	1	KIP-848
69	ConsumerGroupDescribe	0	1	KIP-848
71	GetTelemetrySubscriptions	0	0	KIP-714
72	PushTelemetry	0	0	KIP-714
73	AssignReplicasToDirs	0	0	Protocol guide
74	ListConfigResources	0	1	Protocol guide
75	DescribeTopicPartitions	0	0	Protocol guide
76	ShareGroupHeartbeat	1	1	KIP-932
77	ShareGroupDescribe	1	1	KIP-932
78	ShareFetch	1	2	KIP-932
79	ShareAcknowledge	1	2	KIP-932
80	AddRaftVoter	0	1	KIP-853
81	RemoveRaftVoter	0	0	KIP-853
82	UpdateRaftVoter	0	0	KIP-853
83	InitializeShareGroupState	0	0	KIP-932
84	ReadShareGroupState	0	0	KIP-932
85	WriteShareGroupState	0	1	KIP-932
86	DeleteShareGroupState	0	0	KIP-932
87	ReadShareGroupStateSummary	0	1	KIP-932
88	StreamsGroupHeartbeat	0	0	KIP-1071
89	StreamsGroupDescribe	0	0	KIP-1071
90	DescribeShareGroupOffsets	0	1	KIP-932
91	AlterShareGroupOffsets	0	0	KIP-932
92	DeleteShareGroupOffsets	0	0	KIP-932
93	GetReplicaLogInfo	0	0	KIP-500