# Create chat

URL: https://docs.hanzo.ai/docs/openapi/studio/post-studio-chat

> Sends one message in a thread (a new thread when `thread` is absent).

`POST /v1/studio/chat`

> [Studio →](https://docs.hanzo.ai/docs/openapi/studio) · [All API references →](https://docs.hanzo.ai/docs/openapi) · [Get started →](https://docs.hanzo.ai/docs/guides)

|               |                                        |
| ------------- | -------------------------------------- |
| **Address**   | `https://api.hanzo.ai/v1/studio/chat`  |
| **Method**    | `POST`                                 |
| **Operation** | `post_studio_chat`                     |
| **Auth**      | `Authorization: Bearer $HANZO_API_KEY` |

Sends one message in a thread (a new thread when `thread` is absent). The assistant answers in text and, when the message asks for something to be made, plans it as runs and starts them; each is exactly the run POST /v1/studio/runs would start, checked and paid for the same way.

Answers text/event-stream: `thread` {thread} first; `delta` {text} as the answer is written; `run` {seq, run} for each run the turn started (follow it on its own events); `error` (a problem document) when a planned run could not start — a wallet that cannot cover it is status 402 — and the turn goes on; `done` {thread, message, runs} last, with the stored message. 402 before the stream when the wallet cannot pay for the turn itself.

## Request

5 fields, body `application/json`.

| Field     | In   | Type      | Required | Description |
| --------- | ---- | --------- | -------- | ----------- |
| `assets`  | body | string\[] | —        |             |
| `brand`   | body | string    | —        |             |
| `message` | body | string    | —        |             |
| `model`   | body | string    | —        |             |
| `thread`  | body | string    | —        |             |

## Response

| Status | Body   | Meaning |
| ------ | ------ | ------- |
| `2XX`  | string | Success |

`2XX` body — 1 field.

| Field    | In   | Type            | Always | Description |
| -------- | ---- | --------------- | ------ | ----------- |
| `(body)` | body | string (binary) | yes    |             |

Failure carries the platform error shape — see [Errors](https://docs.hanzo.ai/docs/errors).

## Examples

**CLI**

```bash
hanzo studio chat
```

**SDK**

**.ts**

```ts
import { Configuration, StudioApi } from 'hanzoai';

const api = new StudioApi(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.postStudioChat({ assets: ["<assets>"], brand: "<brand>" });
```

**.py**

```python
from hanzoai.cloud import ApiClient, Configuration
from hanzoai.cloud.api import StudioApi

client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"]))
result = StudioApi(client).post_studio_chat(assets=["<assets>"], brand="<brand>")
```

**.go**

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

resp, _, err := client.StudioAPI.PostStudioChat(context.Background()).Execute()
if err != nil {
	return err
}
```

**.rs**

```rust
use hanzo_client::apis::{configuration::Configuration, studio_api};

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

let result = studio_api::post_studio_chat(&cfg, Default::default()).await?;
```

**.java**

```java
import ai.hanzo.cloud.ApiClient;
import ai.hanzo.cloud.api.StudioApi;

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

var result = new StudioApi(client).postStudioChat();
```

**HTTP**

```bash
curl -X POST https://api.hanzo.ai/v1/studio/chat \
  -H "Authorization: Bearer $HANZO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
       "assets": [
         "<assets>"
       ],
       "brand": "<brand>"
     }'
```

**MCP**

MCP reaches **studio** through the `studio` tool, which names its 32 operations with its own verbs — this one among them, under a name only MCP declares. `describe` explains any of them:

```bash
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_studio_brands"
         }
       }
     }'
```

---

[Studio API](https://docs.hanzo.ai/docs/openapi/studio) · [All Hanzo APIs](https://docs.hanzo.ai/docs/openapi) · [Interactive reference](https://docs.hanzo.ai/docs/openapi/reference)