# Create extend

URL: https://docs.hanzo.ai/docs/openapi/agent/post-agent-coding-by-session-extend

> Gives your running coding run more time.

`POST /v1/agent/coding/{session}/extend`

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

|               |                                                         |
| ------------- | ------------------------------------------------------- |
| **Address**   | `https://api.hanzo.ai/v1/agent/coding/{session}/extend` |
| **Method**    | `POST`                                                  |
| **Operation** | `post_agent_coding_by_session_extend`                   |
| **Auth**      | `Authorization: Bearer $HANZO_API_KEY`                  |

Gives your running coding run more time. A run is held to the time it was asked
for (`timeoutSeconds`) and, when it is up, keeps its work on its branch and
ends; this moves that time later while the run works, so a task expected to
take five minutes that is nearly done is given two more rather than restarted.
`seconds` is added to the time the run has left, as far as the longest a run
may be given; the answer says when the run is up now, so asking for more than
that reads what you got.

The run must be yours and still working: a run that is paused or already out
of time is a conflict (start a new one with `after` set to its session), and
one that is not running is not found. A run sent to a machine of your own
keeps that machine's time and cannot be extended.

## Request

3 fields, body `application/json` (required).

| Field     | In   | Type            | Required | Description                                                |
| --------- | ---- | --------------- | -------- | ---------------------------------------------------------- |
| `session` | path | string          | yes      | Session is the run's handle, from the path.                |
| `seconds` | body | integer (int64) | —        | Seconds is how much to add to the time the run is held to. |
| `session` | body | string          | —        | Session is the run's handle, from the path.                |

## Response

| Status    | Body                 | Meaning |
| --------- | -------------------- | ------- |
| `200`     | agent.CodingExtended | ok      |
| `default` | problem-details      | refused |

`200` body — 2 fields.

| Field     | In   | Type            | Always | Description                                                       |
| --------- | ---- | --------------- | ------ | ----------------------------------------------------------------- |
| `seconds` | body | integer (int64) | —      | Seconds is how long the run has left.                             |
| `until`   | body | string          | —      | Until is when the run is ended for time now, as an RFC 3339 time. |

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

## Examples

**CLI**

```bash
hanzo agent coding extend <session>
```

**SDK**

**.ts**

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

const api = new AgentApi(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.postAgentCodingBySessionExtend({ session: 'session', seconds: 0, session: "<session>" });
```

**.py**

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

client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"]))
result = AgentApi(client).post_agent_coding_by_session_extend(session='session', seconds=0, session="<session>")
```

**.go**

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

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

**.rs**

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

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

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

**.java**

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

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

var result = new AgentApi(client).postAgentCodingBySessionExtend();
```

The method above is the one at the current release of the document. `hanzoai@8.5.914` (npm) and `hanzoai@8.5.914` (PyPI) were generated from an earlier release, where this operation carried a different id, so it spells the method differently — regenerating the clients is what makes the two agree. [SDKs →](https://docs.hanzo.ai/docs/sdks)

**HTTP**

```bash
curl -X POST https://api.hanzo.ai/v1/agent/coding/<session>/extend \
  -H "Authorization: Bearer $HANZO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
       "seconds": 0,
       "session": "<session>"
     }'
```

**MCP**

MCP reaches **agent** through the `agent` tool, which names its 51 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_agents"
         }
       }
     }'
```

---

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