# Create key

URL: https://docs.hanzo.ai/docs/openapi/agent/post-agent-targets-by-id-key

> Mints (or rotates) the claim key a `hanzo code --serve` daemon presents to claim work for this machine, and returns it ONCE: only its SHA-256 hash is stored.

`POST /v1/agent/targets/{id}/key`

> [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/targets/{id}/key` |
| **Method**    | `POST`                                           |
| **Operation** | `post_agent_targets_by_id_key`                   |
| **Auth**      | `Authorization: Bearer $HANZO_API_KEY`           |

Mints (or rotates) the claim key a `hanzo code --serve`
daemon presents to claim work for this machine, and returns it ONCE: only its
SHA-256 hash is stored. Rotating supersedes any prior daemon, so only the
machine's owner — or an org admin — may call it; every other caller gets the
same not-found an unknown id gets, and learns nothing about what exists.

## Request

1 field.

| Field | In   | Type   | Required | Description                                |
| ----- | ---- | ------ | -------- | ------------------------------------------ |
| `id`  | path | string | yes      | ID is the target to act on, from the path. |

## Response

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

`200` body — 2 fields.

| Field      | In   | Type   | Always | Description                                    |
| ---------- | ---- | ------ | ------ | ---------------------------------------------- |
| `claimKey` | body | string | —      | ClaimKey is the capability itself.             |
| `targetId` | body | string | —      | TargetID is the machine the key authenticates. |

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

## Examples

**CLI**

```bash
hanzo agent targets key <id>
```

**SDK**

**.ts**

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

const api = new AgentApi(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.postAgentTargetsByIdKey({ id: 'id' });
```

**.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_targets_by_id_key(id='id')
```

**.go**

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

resp, _, err := client.AgentAPI.PostAgentTargetsByIdKey(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_targets_by_id_key(&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).postAgentTargetsByIdKey();
```

**HTTP**

```bash
curl -X POST https://api.hanzo.ai/v1/agent/targets/<id>/key \
  -H "Authorization: Bearer $HANZO_API_KEY"
```

**MCP**

MCP reaches **agent** through the `agent` tool, which names its 38 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)