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# Assign Resource to SIP credential

POST https://%7BYour_Space_Name%7D.signalwire.com/api/fabric/resources/{id}/sip_endpoints
Content-Type: application/json

Assigns an existing resource as the calling handler for a SIP Credential. Use it when calls placed by the registered SIP device should run that resource's instructions. This operation does not create a credential; use [Create SIP credential](/docs/apis/rest/sip-credentials/create-sip-credential) first when the device does not yet have one.

Currently only supports `calling` as a handler and automatically defaults to it.

#### Permissions

The API token used to authenticate must have the following scope(s) enabled to make a successful request: *Voice*, *Messaging*, *Fax*, or *Video*.

[Learn more about API scopes](/docs/platform/your-signalwire-api-space).

Reference: https://signalwire.com/docs/apis/rest/sip-credentials/assign-resource-to-sip-credential

## Authentication

- `Authorization` header (basic auth, required) — SignalWire Basic Authentication using Project ID and API Token. The client sends HTTP requests with the Authorization header containing the word Basic followed by a space and a base64-encoded string of project_id:token. The project ID will be used as the username and the API token as the password. Example: ``` Authorization: Basic base64(project_id:token) ```

## Request

### Path parameters

- `id` (string, required) — The unique identifier of the Resource.

### Body (application/json)

This endpoint expects a ResourceSipEndpointAssignRequest.

- `sip_endpoint_id` (string, required) — The unique identifier of the SIP endpoint.

## Response

### 200

The request has succeeded.

- `id` (string, required) — The unique identifier of the SIP endpoint.
- `name` (string, required) — The name for the SIP endpoint.
- `type` (enum, required) — The Resource type
  - Allowed values: `call`
- `cover_url` (string, required, nullable) — The cover URL for the SIP endpoint.
- `preview_url` (string, required, nullable) — The preview URL for the SIP endpoint.
- `channels` (AddressChannel, required) — An object containing the resource addresses with the specified comunication channels

## Errors

### 401 Unauthorized Error

Access is unauthorized.

- `error` (enum, required)
  - Allowed values: `Unauthorized`

### 404 Not Found Error

The server cannot find the requested resource.

- `error` (enum, required)
  - Allowed values: `Not Found`

### 422 Unprocessable Entity Error

The request contains invalid parameters. See errors for details.

- `errors` (list of Types.StatusCodes.RestApiErrorItem, required) — List of validation errors.

### 500 Internal Server Error

An internal server error occurred.

- `error` (enum, required)
  - Allowed values: `Internal Server Error`

## Types

### AddressChannel

### Types.StatusCodes.RestApiErrorItem

Details about a specific error.

- `type` (string, required) — The category of error.
- `code` (string, required) — A specific error code.
- `message` (string, required) — A description of what caused the error.
- `url` (string, required) — A link to documentation about this error.
- `attribute` (string, optional, nullable) — The request parameter that caused the error, if applicable.

### AudioChannel

- `audio` (string, required) — Audio Channel of Fabric Address

### MessagingChannel

- `messaging` (string, required) — Messaging Channel of Fabric Address

### VideoChannel

- `video` (string, required) — Video Channel of Fabric Address

## Examples

**Request**

```json
{
  "sip_endpoint_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6"
}
```

**Response**

```json
{
  "id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
  "name": "sip_user",
  "type": "call",
  "cover_url": "https://example.com/cover.jpg",
  "preview_url": "https://example.com/preview.jpg",
  "channels": {
    "audio": "/external/resource_name?channel=audio"
  }
}
```

**SDK Code**

```python
import requests

url = "https://{your_space_name}.signalwire.com/api/fabric/resources/id/sip_endpoints"

payload = { "sip_endpoint_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6" }
headers = {
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers, auth=("<project_id>", "<api_token>"))

print(response.json())
```

```javascript
const url = 'https://{your_space_name}.signalwire.com/api/fabric/resources/id/sip_endpoints';
const credentials = btoa("<project_id>:<api_token>");

const options = {
  method: 'POST',
  headers: {
    Authorization: `Basic ${credentials}`,
    'Content-Type': 'application/json'
  },
  body: '{"sip_endpoint_id":"3fa85f64-5717-4562-b3fc-2c963f66afa6"}'
};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://{your_space_name}.signalwire.com/api/fabric/resources/id/sip_endpoints"

	payload := strings.NewReader("{\n  \"sip_endpoint_id\": \"3fa85f64-5717-4562-b3fc-2c963f66afa6\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.SetBasicAuth("<project_id>", "<api_token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://{your_space_name}.signalwire.com/api/fabric/resources/id/sip_endpoints")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request.basic_auth("<project_id>", "<api_token>")
request["Content-Type"] = 'application/json'
request.body = "{\n  \"sip_endpoint_id\": \"3fa85f64-5717-4562-b3fc-2c963f66afa6\"\n}"

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.post("https://{your_space_name}.signalwire.com/api/fabric/resources/id/sip_endpoints")
  .basicAuth("<project_id>", "<api_token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"sip_endpoint_id\": \"3fa85f64-5717-4562-b3fc-2c963f66afa6\"\n}")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://{your_space_name}.signalwire.com/api/fabric/resources/id/sip_endpoints', [
  'body' => '{
  "sip_endpoint_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6"
}',
  'headers' => [
    'Content-Type' => 'application/json',
  ],
    'auth' => ['<project_id>', '<api_token>'],
]);

echo $response->getBody();
```

```csharp
using RestSharp;
using RestSharp.Authenticators;

var client = new RestClient("https://{your_space_name}.signalwire.com/api/fabric/resources/id/sip_endpoints");
client.Authenticator = new HttpBasicAuthenticator("<project_id>", "<api_token>");
var request = new RestRequest(Method.POST);

request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"sip_endpoint_id\": \"3fa85f64-5717-4562-b3fc-2c963f66afa6\"\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let credentials = Data("<project_id>:<api_token>".utf8).base64EncodedString()

let headers = [
  "Authorization": "Basic \(credentials)",
  "Content-Type": "application/json"
]
let parameters = ["sip_endpoint_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6"] as [String : Any]

let postData = JSONSerialization.data(withJSONObject: parameters, options: [])

let request = NSMutableURLRequest(url: NSURL(string: "https://{your_space_name}.signalwire.com/api/fabric/resources/id/sip_endpoints")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers
request.httpBody = postData as Data

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```