# List last

URL: https://docs.hanzo.ai/docs/openapi/o11y/get-o11y-alerts-last

> Answers the most recent Alertmanager deliveries THIS process received, as plain text — one greppable `ALERT-RECEIVED` line per alert, followed by the `ALERT-DELIVERED` / `ALERT-UNDELIVERED` outcome of carrying it out of the process, newest last, so piping to `tail` reads in arrival order.

`GET /v1/o11y/alerts/last`

> [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/alerts/last` |
| **Method**    | `GET`                                      |
| **Operation** | `get_o11y_alerts_last`                     |
| **Auth**      | `Authorization: Bearer $HANZO_API_KEY`     |

Answers the most recent Alertmanager deliveries THIS process received, as plain text — one greppable `ALERT-RECEIVED` line per alert, followed by the `ALERT-DELIVERED` / `ALERT-UNDELIVERED` outcome of carrying it out of the process, newest last, so piping to `tail` reads in arrival order. `(none)` when nothing has landed.

Arrival and delivery are separate lines because they are separate facts that fail independently. Alertmanager can tell you it dispatched a notification, never that anything received it; this process taking the call says nothing about whether a human was reached. Reading only the first as if it were the second is how a pager stays silent for months behind a log where everything looks fine.

The ring is PROCESS-LOCAL and bounded to the last 200 lines. Both are the point: a record that outlived the process that took the call would be a claim about something nobody observed, and an unbounded log is a memory leak with a nice name. A restart empties it.

## Request

`GET /v1/o11y/alerts/last` takes no parameters and no body — the credential is the whole request.

## Response

The document declares no response body for this operation. It answers `200` on success and the platform error shape on failure — see [Errors](https://docs.hanzo.ai/docs/errors).

## Examples

**CLI**

```bash
hanzo o11y alerts last
```

**SDK**

**.ts**

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

const api = new O11yApi(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.getO11yAlertsLast();
```

**.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_alerts_last()
```

**.go**

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

resp, _, err := client.O11yAPI.GetO11yAlertsLast(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_alerts_last(&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).getO11yAlertsLast();
```

**HTTP**

```bash
curl https://api.hanzo.ai/v1/o11y/alerts/last \
  -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)