# Replace middlewares

URL: https://docs.hanzo.ai/docs/openapi/ingress/put-ingress-middlewares-by-id

> Creates or replaces one edge transform and hot-applies it.

`PUT /v1/ingress/middlewares/{id}`

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

|               |                                                    |
| ------------- | -------------------------------------------------- |
| **Address**   | `https://api.hanzo.ai/v1/ingress/middlewares/{id}` |
| **Method**    | `PUT`                                              |
| **Operation** | `put_ingress_middlewares_by_id`                    |
| **Auth**      | `Authorization: Bearer $HANZO_API_KEY`             |

Creates or replaces one edge transform and hot-applies it. POST
mints an id when the body omits one; PUT takes the id from the URL, which wins
over any id in the body. type must be one of redirectScheme, stripPrefix,
addPrefix or headers, and stripPrefix/addPrefix each require their config key.

## Request

5 fields, body `application/json` (required).

| Field      | In   | Type   | Required | Description                                                                                                                                                                                                                                                                |
| ---------- | ---- | ------ | -------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `id`       | path | string | yes      | ID identifies the transform within the org: \[A-Za-z0-9-\_.], at most 128 chars.                                                                                                                                                                                           |
| `config`   | body | object | —        | Config is the transform's parameters: redirectScheme takes scheme (default https) and permanent ("true" ⇒ 301, else 302); stripPrefix REQUIRES prefixes (comma-separated, first match wins); addPrefix REQUIRES prefix; headers is a header→value map set on the response. |
| `config.*` | body | string | —        |                                                                                                                                                                                                                                                                            |
| `id`       | body | string | —        | ID identifies the transform within the org: \[A-Za-z0-9-\_.], at most 128 chars.                                                                                                                                                                                           |
| `type`     | body | string | —        | Type is the transform: redirectScheme, stripPrefix, addPrefix or headers.                                                                                                                                                                                                  |

## Response

| Status    | Body               | Meaning |
| --------- | ------------------ | ------- |
| `200`     | ingress.Middleware | ok      |
| `default` | problem-details    | refused |

`200` body — 4 fields.

| Field      | In   | Type   | Always | Description                                                                                                                                                                                                                                                                |
| ---------- | ---- | ------ | ------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `config`   | body | object | —      | Config is the transform's parameters: redirectScheme takes scheme (default https) and permanent ("true" ⇒ 301, else 302); stripPrefix REQUIRES prefixes (comma-separated, first match wins); addPrefix REQUIRES prefix; headers is a header→value map set on the response. |
| `config.*` | body | string | —      |                                                                                                                                                                                                                                                                            |
| `id`       | body | string | —      | ID identifies the transform within the org: \[A-Za-z0-9-\_.], at most 128 chars.                                                                                                                                                                                           |
| `type`     | body | string | —      | Type is the transform: redirectScheme, stripPrefix, addPrefix or headers.                                                                                                                                                                                                  |

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

## Examples

**CLI**

```bash
hanzo ingress middlewares set <id>
```

**SDK**

**.ts**

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

const api = new IngressApi(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.putIngressMiddlewaresById({ id: 'id', config: {}, id: "<id>" });
```

**.py**

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

client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"]))
result = IngressApi(client).put_ingress_middlewares_by_id(id='id', config={}, id="<id>")
```

**.go**

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

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

**.rs**

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

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

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

**.java**

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

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

var result = new IngressApi(client).putIngressMiddlewaresById();
```

**HTTP**

```bash
curl -X PUT https://api.hanzo.ai/v1/ingress/middlewares/<id> \
  -H "Authorization: Bearer $HANZO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
       "config": {},
       "id": "<id>"
     }'
```

**MCP**

MCP reaches **ingress** through the `ingress` tool, which names its 18 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_ingress_middlewares"
         }
       }
     }'
```

---

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