# List attribute values — GET /v1/o11y/autocomplete/attribute_values

URL: https://docs.hanzo.ai/docs/openapi/o11y/get-o11y-autocomplete-attribute-values

> Lists the values one attribute key has taken — string, number and bool values in their own lists — for completing a filter.

`GET /v1/o11y/autocomplete/attribute_values`

> [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/autocomplete/attribute_values` |
| **Method**    | `GET`                                                        |
| **Operation** | `get_o11y_autocomplete_attribute_values`                     |
| **Auth**      | `Authorization: Bearer $HANZO_API_KEY`                       |

Lists the values one attribute key has taken — string,
number and bool values in their own lists — for completing a filter.

Callers need the viewer role; the runtime's own gate enforces it.

## Request

8 fields.

| Field                        | In    | Type    | Required | Description                                                                         |
| ---------------------------- | ----- | ------- | -------- | ----------------------------------------------------------------------------------- |
| `dataSource`                 | query | string  | —        | DataSource is the telemetry the values come from — traces, logs or metrics.         |
| `aggregateOperator`          | query | string  | —        | AggregateOperator is the aggregation the values will be used under.                 |
| `aggregateAttribute`         | query | string  | —        | AggregateAttribute is the metric the values must appear on.                         |
| `attributeKey`               | query | string  | —        | AttributeKey is the key whose values to list.                                       |
| `filterAttributeKeyDataType` | query | string  | —        | FilterAttributeKeyDataType is the key's data type — string, int64, float64 or bool. |
| `searchText`                 | query | string  | —        | SearchText narrows the values to those containing it.                               |
| `tagType`                    | query | string  | —        | TagType narrows the search to one kind of key — tag or resource.                    |
| `limit`                      | query | integer | —        | Limit caps how many values come back.                                               |

## Response

| Status    | Body                        | Meaning           |
| --------- | --------------------------- | ----------------- |
| `200`     | o11y.O11yAttributeValuesOut | ok                |
| `202`     | Approval                    | held for approval |
| `default` | problem-details             | refused           |

`200` body — 6 fields.

| Field                        | In   | Type                              | Always | Description          |
| ---------------------------- | ---- | --------------------------------- | ------ | -------------------- |
| `data`                       | body | o11y.FilterAttributeValueResponse | —      |                      |
| `data.boolAttributeValues`   | body | boolean\[]                        | —      |                      |
| `data.numberAttributeValues` | body | any\[]                            | —      |                      |
| `data.relatedValues`         | body | o11y.FilterAttributeValueResponse | —      |                      |
| `data.stringAttributeValues` | body | string\[]                         | —      |                      |
| `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 autocomplete attribute_values
```

**SDK**

**.ts**

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

const api = new O11yApi(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.getO11yAutocompleteAttributeValues();
```

**.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_o11y_autocomplete_attribute_values()
```

**.go**

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

resp, _, err := client.O11yAPI.GetO11yAutocompleteAttributeValues(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_o11y_autocomplete_attribute_values(&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).getO11yAutocompleteAttributeValues();
```

**HTTP**

```bash
curl https://api.hanzo.ai/v1/o11y/autocomplete/attribute_values \
  -H "Authorization: Bearer $HANZO_API_KEY"
```

**MCP**

MCP reaches **o11y** through the `o11y` tool, which names its 307 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_o11y_autocomplete_aggregate_attributes"
         }
       }
     }'
```

---

[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)