# List history

URL: https://docs.hanzo.ai/docs/openapi/ai/get-ai-router-history

> Returns the router-improvement time-series.

`GET /v1/ai/router/history`

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

|               |                                             |
| ------------- | ------------------------------------------- |
| **Address**   | `https://api.hanzo.ai/v1/ai/router/history` |
| **Method**    | `GET`                                       |
| **Operation** | `get_ai_router_history`                     |
| **Auth**      | `Authorization: Bearer $HANZO_API_KEY`      |

Returns the router-improvement time-series. Two scopes, one route,
mirroring /v1/ai/router/stats:

- ?scope=platform — PUBLIC-safe aggregate over ALL orgs, no authentication. Emits
  the daily reward/cost-saved/adoption series (task mix included, model ids NOT)
  and the retrain timeline. This is what world.hanzo.ai polls.
- default (org scope) — requires a signed-in principal, scoped to the caller's OWN
  org (a super admin may pass ?org= to target another or "" for all).

Window: ?days=N (default 30, capped at 90). Aggregates only.

## Request

`GET /v1/ai/router/history` takes no parameters and no body — the credential is the whole request.

## Response

| Status | Body | Meaning                                             |
| ------ | ---- | --------------------------------------------------- |
| `200`  |      | Success.                                            |
| `401`  | —    | No credential, or one this service does not accept. |
| `403`  | —    | A valid credential that may not do this.            |

`200` body — 35 fields.

| Field                                | In   | Type                 | Always | Description                                             |
| ------------------------------------ | ---- | -------------------- | ------ | ------------------------------------------------------- |
| `data`                               | body | any                  | —      | The operation's own result.                             |
| `data2`                              | body | any                  | —      | A second result the operation defines, when it has one. |
| `msg`                                | body | string               | yes    | Empty on success, the reason on failure.                |
| `status`                             | body | string               | yes    | One of `ok`, `error`.                                   |
| `data.daily`                         | body | ai.HistoryDay\[]     | —      |                                                         |
| `data.daily[].by_task`               | body | object               | —      |                                                         |
| `data.daily[].by_task.*`             | body | integer              | —      |                                                         |
| `data.daily[].cost_saved_index`      | body | number               | —      |                                                         |
| `data.daily[].cumulative_cost_saved` | body | number               | —      |                                                         |
| `data.daily[].date`                  | body | string               | —      |                                                         |
| `data.daily[].events`                | body | integer              | —      |                                                         |
| `data.daily[].learned_share`         | body | number               | —      |                                                         |
| `data.daily[].reward_rate`           | body | number               | —      |                                                         |
| `data.daily[].rewarded_events`       | body | integer              | —      |                                                         |
| `data.retrains`                      | body | ai.HistoryRetrain\[] | —      |                                                         |
| `data.retrains[].date`               | body | string               | —      |                                                         |
| `data.retrains[].events`             | body | integer              | —      |                                                         |
| `data.retrains[].gate_base`          | body | number               | —      |                                                         |
| `data.retrains[].gate_metric`        | body | string               | —      |                                                         |
| `data.retrains[].gate_pass`          | body | boolean              | —      |                                                         |
| `data.retrains[].gate_value`         | body | number               | —      |                                                         |
| `data.retrains[].holdout_accuracy`   | body | number               | —      |                                                         |
| `data.retrains[].published`          | body | boolean              | —      |                                                         |
| `data.retrains[].trained_time`       | body | string               | —      |                                                         |
| `data.retrains[].version`            | body | string               | —      |                                                         |
| `data.scope`                         | body | string               | —      |                                                         |
| `data.totals`                        | body | ai.HistoryTotals     | —      |                                                         |
| `data.totals.cumulative_cost_saved`  | body | number               | —      |                                                         |
| `data.totals.days_active`            | body | integer              | —      |                                                         |
| `data.totals.events`                 | body | integer              | —      |                                                         |
| `data.totals.reward_rate`            | body | number               | —      |                                                         |
| `data.window`                        | body | ai.HistoryWindow     | —      |                                                         |
| `data.window.days`                   | body | integer              | —      |                                                         |
| `data.window.since`                  | body | string               | —      |                                                         |
| `data.window.until`                  | body | string               | —      |                                                         |

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

## Examples

**CLI**

```bash
hanzo ai router history
```

**SDK**

**.ts**

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

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

**.py**

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

client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"]))
result = AiApi(client).get_ai_router_history()
```

**.go**

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

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

**.rs**

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

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

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

**.java**

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

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

var result = new AiApi(client).getAiRouterHistory();
```

**HTTP**

```bash
curl https://api.hanzo.ai/v1/ai/router/history \
  -H "Authorization: Bearer $HANZO_API_KEY"
```

**MCP**

MCP declares no tool for **ai** — `tools/list` on `https://api.hanzo.ai/v1/mcp` names the products it does reach. Use HTTP or an SDK.

---

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