Create messages — POST /v1/messages

Implements the Anthropic Messages API.

POST /v1/messages

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Address	`https://api.hanzo.ai/v1/messages`
Method	`POST`
Operation	`post_messages`
Auth	`Authorization: Bearer $HANZO_API_KEY`

Implements the Anthropic Messages API.

Request

14 fields, body application/json (required).

Field	In	Type	Required
`max_tokens`	body	integer	—
`messages`	body	ai.AnthropicMessage[]	—
`messages[].content`	body	any	—
`messages[].role`	body	string	—
`model`	body	string	—
`stream`	body	boolean	—
`system`	body	any	—
`temperature`	body	number	—
`thinking`	body	any	—
`tool_choice`	body	any	—
`tools`	body	ai.AnthropicTool[]	—
`tools[].description`	body	string	—
`tools[].input_schema`	body	any	—
`tools[].name`	body	string	—

Response

Status	Body	Meaning
`200`	ai.AnthropicResponse	Success.
`401`	—	No credential, or one this service does not accept.
`403`	—	A valid credential that may not do this.

200 body — 17 fields.

Field	In	Type	Always
`content`	body	ai.AnthropicContentBlock[]	—
`content[].text`	body	string	—
`content[].type`	body	string	—
`id`	body	string	—
`model`	body	string	—
`role`	body	string	—
`stop_reason`	body	string	—
`type`	body	string	—
`usage`	body	ai.AnthropicUsage	—
`usage.cache_creation`	body	ai.CacheWrites	—
`usage.cache_creation.ephemeral_1h_input_tokens`	body	integer	—
`usage.cache_creation.ephemeral_5m_input_tokens`	body	integer	—
`usage.cache_creation_input_tokens`	body	integer	—
`usage.cache_read_input_tokens`	body	integer	—
`usage.input_tokens`	body	integer	—
`usage.iterations`	body	ai.AnthropicUsage[]	—
`usage.output_tokens`	body	integer	—

Failure carries the platform error shape — see Errors.

Examples

CLI

SDK

HTTP

MCP

hanzo messages create

.ts

.py

.go

.rs

.java

import { Configuration, AiApi } from 'hanzoai';

const api = new AiApi(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.postMessages({ max_tokens: 0, messages: [{"content":"<content>","role":"<role>"}] });

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

client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"]))
result = AiApi(client).post_messages(max_tokens=0, messages=[{"content":"<content>","role":"<role>"}])

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

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

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

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

let result = ai_api::post_messages(&cfg, Default::default()).await?;

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

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

var result = new AiApi(client).postMessages();

curl -X POST https://api.hanzo.ai/v1/messages \
  -H "Authorization: Bearer $HANZO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
       "max_tokens": 0,
       "messages": [
         {
           "content": "<content>",
           "role": "<role>"
         }
       ]
     }'

MCP declares no tool for ai — tools/list on https://api.hanzo.ai/v1/mcp names the products it does reach. Use HTTP or an SDK.

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