# Update watchlist

URL: https://docs.hanzo.ai/docs/openapi/commerce/patch-commerce-watchlist-by-watchlistid

> A watchlist is a viewer's saved list of movies — a user id, an email, and the movies themselves.

`PATCH /v1/commerce/watchlist/{watchlistid}`

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

|               |                                                            |
| ------------- | ---------------------------------------------------------- |
| **Address**   | `https://api.hanzo.ai/v1/commerce/watchlist/{watchlistid}` |
| **Method**    | `PATCH`                                                    |
| **Operation** | `patch_commerce_watchlist_by_watchlistid`                  |
| **Auth**      | `Authorization: Bearer $HANZO_API_KEY`                     |

A watchlist is a viewer's saved list of movies — a user id, an email, and the movies themselves. It stores WHOLE MOVIE SNAPSHOTS rather than movie ids, so a list goes stale the moment a film record changes and grows without bound as it fills. Loads the stored row and decodes the body OVER it, so only the fields the body names change and everything else keeps its stored value — the difference from the full replace, which clears what it is not told. Answers the merged row. An id absent from the caller org's namespace is 404 and a body that fails to decode is 400. Any valid access token reaches it. The per-kind permission table has no entry for watchlist, so the scaffold skips that second check with a warning and the gate above is the whole authorization story.

## Request

1 field.

| Field         | In   | Type   | Required | Description |
| ------------- | ---- | ------ | -------- | ----------- |
| `watchlistid` | path | string | yes      |             |

## 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 commerce watchlist update <watchlistid>
```

**SDK**

**.ts**

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

const api = new CommerceApi(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.patchCommerceWatchlistByWatchlistid({ watchlistid: 'watchlistid' });
```

**.py**

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

client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"]))
result = CommerceApi(client).patch_commerce_watchlist_by_watchlistid(watchlistid='watchlistid')
```

**.go**

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

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

**.rs**

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

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

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

**.java**

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

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

var result = new CommerceApi(client).patchCommerceWatchlistByWatchlistid();
```

**HTTP**

```bash
curl -X PATCH https://api.hanzo.ai/v1/commerce/watchlist/<watchlistid> \
  -H "Authorization: Bearer $HANZO_API_KEY"
```

**MCP**

MCP reaches **commerce** through the `commerce` tool, which names its 5 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": "get_commerce_health"
         }
       }
     }'
```

---

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