# List scores

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

> Lists eval scores and human-feedback signals attached to traces and observations, newest first.

`GET /v1/o11y/llm/scores`

> [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/llm/scores` |
| **Method**    | `GET`                                     |
| **Operation** | `ListLLMScores`                           |
| **Auth**      | `Authorization: Bearer $HANZO_API_KEY`    |

Lists eval scores and human-feedback signals attached to traces
and observations, newest first.

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

## Request

6 fields.

| Field           | In    | Type    | Required | Description                                               |
| --------------- | ----- | ------- | -------- | --------------------------------------------------------- |
| `traceId`       | query | string  | —        | TraceID narrows to scores on one trace.                   |
| `observationId` | query | string  | —        | ObservationID narrows to scores on one observation.       |
| `name`          | query | string  | —        | Name narrows to scores of one name.                       |
| `source`        | query | string  | —        | Source narrows to scores from one source, e.g. API, EVAL. |
| `offset`        | query | integer | —        | Offset is how many rows to skip, for paging.              |
| `limit`         | query | integer | —        | Limit caps how many rows come back.                       |

## Response

| Status    | Body                  | Meaning           |
| --------- | --------------------- | ----------------- |
| `200`     | o11y.O11yLLMScoresOut | ok                |
| `202`     | Approval              | held for approval |
| `default` | problem-details       | refused           |

`200` body — 19 fields.

| Field                        | In   | Type                   | Always | Description                                                            |
| ---------------------------- | ---- | ---------------------- | ------ | ---------------------------------------------------------------------- |
| `data`                       | body | o11y.O11yLLMScoresPage | —      |                                                                        |
| `data.items`                 | body | o11y.O11yLLMScore\[]   | —      | Items are the scores, newest first.                                    |
| `data.items[].comment`       | body | string                 | —      | Comment is a free-text note.                                           |
| `data.items[].createdAt`     | body | string (date-time)     | —      | CreatedAt is when the score was stored.                                |
| `data.items[].createdBy`     | body | string                 | —      | CreatedBy is who created the score.                                    |
| `data.items[].dataType`      | body | string                 | —      | DataType is the score's kind — NUMERIC or CATEGORICAL.                 |
| `data.items[].id`            | body | string                 | —      | ID is the score's id.                                                  |
| `data.items[].name`          | body | string                 | —      | Name is the score's name.                                              |
| `data.items[].observationId` | body | string                 | —      | ObservationID is the observation the score attaches to, when narrowed. |
| `data.items[].source`        | body | string                 | —      | Source is where the score came from, e.g. API, EVAL.                   |
| `data.items[].stringValue`   | body | string                 | —      | StringValue is the categorical score, when the score is categorical.   |
| `data.items[].timestamp`     | body | string (date-time)     | —      | Timestamp is the score's own event time.                               |
| `data.items[].traceId`       | body | string                 | —      | TraceID is the trace the score attaches to.                            |
| `data.items[].updatedAt`     | body | string (date-time)     | —      | UpdatedAt is when the score last changed.                              |
| `data.items[].value`         | body | number (double)        | —      | Value is the numeric score.                                            |
| `data.limit`                 | body | integer (int64)        | —      | Limit is the page cap the read ran with.                               |
| `data.offset`                | body | integer (int64)        | —      | Offset is the row offset this page started at.                         |
| `data.total`                 | body | integer (int64)        | —      | Total is how many scores match, across all pages.                      |
| `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 llm scores get
```

**SDK**

**.ts**

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

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

**.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).list_llm_scores()
```

**.go**

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

resp, _, err := client.O11yAPI.ListLLMScores(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::list_llm_scores(&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).listLLMScores();
```

**HTTP**

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

**MCP**

Tool `o11y`, op `ListLLMScores` — 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": "ListLLMScores",
           "input": {}
         }
       }
     }'
```

---

[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)