# List attributes

URL: https://docs.hanzo.ai/docs/openapi/o11y/getmetricattributes

> Returns one metric's attribute keys, each with its unique values and their count.

`GET /v1/o11y/metrics/attributes`

> [O11y →](https://docs.hanzo.ai/docs/openapi/o11y) · [All API references →](https://docs.hanzo.ai/docs/openapi) · [Get started →](https://docs.hanzo.ai/docs/guides)

|               |                                                   |
| ------------- | ------------------------------------------------- |
| **Address**   | `https://api.hanzo.ai/v1/o11y/metrics/attributes` |
| **Method**    | `GET`                                             |
| **Operation** | `GetMetricAttributes`                             |
| **Auth**      | `Authorization: Bearer $HANZO_API_KEY`            |

Returns one metric's attribute keys, each with its unique
values and their count.

## Request

3 fields.

| Field        | In    | Type    | Required | Description                                                           |
| ------------ | ----- | ------- | -------- | --------------------------------------------------------------------- |
| `metricName` | query | string  | yes      | MetricName is the metric's name; it may contain slashes.              |
| `start`      | query | integer | —        | Start is the start of the window as a Unix timestamp in milliseconds. |
| `end`        | query | integer | —        | End is the end of the window as a Unix timestamp in milliseconds.     |

## Response

| Status    | Body                         | Meaning           |
| --------- | ---------------------------- | ----------------- |
| `200`     | o11y.O11yMetricAttributesOut | ok                |
| `202`     | Approval                     | held for approval |
| `default` | problem-details              | refused           |

`200` body — 7 fields.

| Field                          | In   | Type                        | Always | Description                                               |
| ------------------------------ | ---- | --------------------------- | ------ | --------------------------------------------------------- |
| `data`                         | body | o11y.O11yMetricAttributes   | —      |                                                           |
| `data.attributes`              | body | o11y.O11yMetricAttribute\[] | —      | Attributes are the keys, each with its values.            |
| `data.attributes[].key`        | body | string                      | —      | Key is the attribute's name.                              |
| `data.attributes[].valueCount` | body | integer (uint64)            | —      | ValueCount is how many distinct values the attribute has. |
| `data.attributes[].values`     | body | string\[]                   | —      | Values are the attribute's distinct values.               |
| `data.totalKeys`               | body | integer (int64)             | —      | TotalKeys is how many keys the metric has.                |
| `status`                       | body | string                      | —      | Status is "success".                                      |

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

## Examples

**CLI**

```bash
hanzo o11y metrics attributes --metric-name <metric-name>
```

**SDK**

**.ts**

```ts
import { Configuration, O11yApi } from 'hanzoai';

const api = new O11yApi(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.getMetricAttributes({ metricName: 'metricName' });
```

**.py**

```python
from hanzoai.cloud import ApiClient, Configuration
from hanzoai.cloud.api import O11yApi

client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"]))
result = O11yApi(client).get_metric_attributes(metric_name='metricName')
```

**.go**

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

resp, _, err := client.O11yAPI.GetMetricAttributes(context.Background()).Execute()
if err != nil {
	return err
}
```

**.rs**

```rust
use hanzo_client::apis::{configuration::Configuration, o11y_api};

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

let result = o11y_api::get_metric_attributes(&cfg, Default::default()).await?;
```

**.java**

```java
import ai.hanzo.cloud.ApiClient;
import ai.hanzo.cloud.api.O11yApi;

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

var result = new O11yApi(client).getMetricAttributes();
```

**HTTP**

```bash
curl https://api.hanzo.ai/v1/o11y/metrics/attributes?metricName=%3CmetricName%3E \
  -H "Authorization: Bearer $HANZO_API_KEY"
```

**MCP**

Tool `o11y`, op `GetMetricAttributes` — POST the JSON-RPC envelope to `https://api.hanzo.ai/v1/mcp`.

```bash
curl -X POST https://api.hanzo.ai/v1/mcp \
  -H "Authorization: Bearer $HANZO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
       "jsonrpc": "2.0",
       "id": 1,
       "method": "tools/call",
       "params": {
         "name": "o11y",
         "arguments": {
           "op": "GetMetricAttributes",
           "input": {
             "metricName": "<metricName>"
           }
         }
       }
     }'
```

---

[O11y API](https://docs.hanzo.ai/docs/openapi/o11y) · [All Hanzo APIs](https://docs.hanzo.ai/docs/openapi) · [Interactive reference](https://docs.hanzo.ai/docs/openapi/reference)