Create consumer

Creates a durable pull consumer on a stream and returns it.

POST /v1/mq/stream/{stream}/consumer

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Address	`https://api.hanzo.ai/v1/mq/stream/{stream}/consumer`
Method	`POST`
Operation	`post_mq_stream_by_stream_consumer`
Auth	`Authorization: Bearer $HANZO_API_KEY`

Creates a durable pull consumer on a stream and returns it.

Request

13 fields, body application/json (required).

Field	In	Type	Required	Description
`stream`	path	string	yes	Stream is the stream name, from the path.
`ack_policy`	body	string	—
`ack_wait`	body	string	—
`deliver_policy`	body	string	—
`description`	body	string	—
`durable_name`	body	string	—
`filter_subject`	body	string	—
`max_ack_pending`	body	integer (int64)	—
`max_deliver`	body	integer (int64)	—
`opt_start_seq`	body	integer (uint64)	—
`opt_start_time`	body	string (date-time)	—
`replay_policy`	body	string	—
`stream`	body	string	—	Stream is the stream name, from the path.

Response

Status	Body	Meaning
`201`	mq.Consumer	created
`default`	problem-details	refused

201 body — 25 fields.

Field	In	Type	Always	Description
`ack_floor`	body	mq.Sequences	—
`ack_floor.consumer_seq`	body	integer (uint64)	—	Consumer is the consumer's own sequence.
`ack_floor.stream_seq`	body	integer (uint64)	—	Stream is the corresponding stream sequence.
`config`	body	mq.Durable	—
`config.ack_policy`	body	string	—	Ack is the acknowledgment policy: explicit (default), all, or none.
`config.ack_wait`	body	string	—	AckWait is how long the broker waits for an ack before redelivering, e.g. "30s" (default).
`config.deliver_policy`	body	string	—	Deliver is where delivery starts: all (default), last, new, by_start_sequence, by_start_time, or last_per_subject.
`config.description`	body	string	—	Description says what this consumer is for.
`config.durable_name`	body	string	—	Name is the durable consumer name (alphanumeric, hyphens, underscores).
`config.filter_subject`	body	string	—	Filter delivers only messages on this org-relative subject (wildcards supported).
`config.max_ack_pending`	body	integer (int64)	—	MaxAckPending caps unacknowledged messages in flight (default 1000).
`config.max_deliver`	body	integer (int64)	—	MaxDeliver caps delivery attempts per message; -1 (default) is unlimited.
`config.opt_start_seq`	body	integer (uint64)	—	StartSeq is the starting sequence for deliver_policy by_start_sequence.
`config.opt_start_time`	body	string (date-time)	—	StartTime is the starting instant for deliver_policy by_start_time.
`config.replay_policy`	body	string	—	Replay is the replay pacing: instant (default) or original.
`created`	body	string (date-time)	—	Created is when the consumer was created.
`delivered`	body	mq.Sequences	—
`delivered.consumer_seq`	body	integer (uint64)	—	Consumer is the consumer's own sequence.
`delivered.stream_seq`	body	integer (uint64)	—	Stream is the corresponding stream sequence.
`name`	body	string	—	Name is the consumer name.
`num_ack_pending`	body	integer (int64)	—	AckPending is the number of delivered, not yet acknowledged messages.
`num_pending`	body	integer (uint64)	—	Pending is the number of messages yet to be delivered.
`num_redelivered`	body	integer (int64)	—	Redelivered is the number of messages currently being redelivered.
`num_waiting`	body	integer (int64)	—	Waiting is the number of pull requests waiting for messages.
`stream_name`	body	string	—	Stream is the stream this consumer reads.

Failure carries the platform error shape — see Errors.

Examples

CLI

SDK

HTTP

MCP

hanzo mq stream consumer create <stream>

.ts

.py

.go

.rs

.java

import { Configuration, MqApi } from 'hanzoai';

const api = new MqApi(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.postMqStreamByStreamConsumer({ stream: 'stream', ack_policy: "<ack_policy>", ack_wait: "<ack_wait>" });

from hanzoai.cloud import ApiClient, Configuration
from hanzoai.cloud.api import MqApi

client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"]))
result = MqApi(client).post_mq_stream_by_stream_consumer(stream='stream', ack_policy="<ack_policy>", ack_wait="<ack_wait>")

cfg := hanzoai.NewConfiguration()
cfg.AddDefaultHeader("Authorization", "Bearer "+os.Getenv("HANZO_API_KEY"))
client := hanzoai.NewAPIClient(cfg)

resp, _, err := client.MqAPI.PostMqStreamByStreamConsumer(context.Background()).Execute()
if err != nil {
	return err
}

use hanzo_client::apis::{configuration::Configuration, mq_api};

let mut cfg = Configuration::new();
cfg.bearer_access_token = std::env::var("HANZO_API_KEY").ok();

let result = mq_api::post_mq_stream_by_stream_consumer(&cfg, Default::default()).await?;

import ai.hanzo.cloud.ApiClient;
import ai.hanzo.cloud.api.MqApi;

ApiClient client = new ApiClient();
client.setBearerToken(System.getenv("HANZO_API_KEY"));

var result = new MqApi(client).postMqStreamByStreamConsumer();

curl -X POST https://api.hanzo.ai/v1/mq/stream/<stream>/consumer \
  -H "Authorization: Bearer $HANZO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
       "ack_policy": "<ack_policy>",
       "ack_wait": "<ack_wait>"
     }'

MCP reaches mq through the mq tool, which names its 15 operations with its own verbs — this one among them, under a name only MCP declares. describe explains any of them:

curl -X POST https://api.hanzo.ai/v1/mcp \
  -H "Content-Type: application/json" \
  -d '{
       "jsonrpc": "2.0",
       "id": 1,
       "method": "tools/call",
       "params": {
         "name": "describe",
         "arguments": {
           "op": "get_mq_health"
         }
       }
     }'

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