Create steps

Appends a message to the END of a sequence: the new step's idx is one past the last, so steps arrive in the order they are added.

POST /v1/marketing/sequences/{id}/steps

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Address	`https://api.hanzo.ai/v1/marketing/sequences/{id}/steps`
Method	`POST`
Operation	`post_marketing_sequences_by_id_steps`
Auth	`Authorization: Bearer $HANZO_API_KEY`

Appends a message to the END of a sequence: the new step's idx is one past the last, so steps arrive in the order they are added. Body is required and delaySeconds must be >= 0. Adding a step does not disturb enrollments already walking — one that has passed this index simply never sees it.

Request

5 fields, body application/json (required).

Field	In	Type	Required	Description
`id`	path	string	yes	SequenceID is the sequence id from the path (the route's :id).
`body`	body	string	—	Body is the message text.
`delaySeconds`	body	integer (int64)	—	DelaySeconds is how long after the previous step this one sends (after enrollment, for the first step).
`id`	body	string	—	SequenceID is the sequence id from the path (the route's :id).
`subject`	body	string	—	Subject is the email subject line, capped at 1024 bytes.

Response

Status	Body	Meaning
`200`	marketing.Step	ok
`default`	problem-details	refused

200 body — 7 fields.

Field	In	Type	Always	Description
`body`	body	string	—	Body is the message text.
`createdAt`	body	integer (int64)	—	CreatedAt is unix seconds, server-assigned.
`delaySeconds`	body	integer (int64)	—	DelaySeconds is how long after the previous step this one sends (after enrollment, for step 0).
`id`	body	string	—	ID is the server-assigned step id ("step_" + 128 random bits).
`idx`	body	integer (int64)	—	Idx is the step's 0-based position, assigned by appending: a new step always lands after the last one.
`sequenceId`	body	string	—	SequenceID is the sequence this step belongs to.
`subject`	body	string	—	Subject is the email subject line, capped at 1024 bytes.

Failure carries the platform error shape — see Errors.

Examples

CLI

SDK

HTTP

MCP

hanzo marketing sequences steps create <id>

.ts

.py

.go

.rs

.java

import { Configuration, MarketingApi } from 'hanzoai';

const api = new MarketingApi(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.postMarketingSequencesByIdSteps({ id: 'id', body: "<body>", delaySeconds: 0 });

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

client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"]))
result = MarketingApi(client).post_marketing_sequences_by_id_steps(id='id', body="<body>", delay_seconds=0)

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

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

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

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

let result = marketing_api::post_marketing_sequences_by_id_steps(&cfg, Default::default()).await?;

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

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

var result = new MarketingApi(client).postMarketingSequencesByIdSteps();

curl -X POST https://api.hanzo.ai/v1/marketing/sequences/<id>/steps \
  -H "Authorization: Bearer $HANZO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
       "body": "<body>",
       "delaySeconds": 0
     }'

MCP reaches marketing through the marketing tool, which names its 35 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": "list_marketing_audiences"
         }
       }
     }'

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