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# Update a Participant

POST https://YOUR_SPACE.signalwire.com/api/laml/2010-04-01/Accounts/{AccountSid}/Conferences/{ConferenceSid}/Participants/{CallSid}
Content-Type: application/x-www-form-urlencoded

Changes an active voice-conference participant's mute, hold, coaching, wait-audio, or announcement settings by Call SID. Use [Update Conference](/docs/compatibility-api/rest/conferences/update-conference) to end or announce to the entire conference, and delete the participant to remove only that caller.

#### Permissions

The API token used to authenticate must have the following scope(s) enabled to make a successful request: _Voice_.

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

Reference: https://signalwire.com/docs/compatibility-api/rest/conference-participants/update-participant

## 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

- `AccountSid` (string, required) — The unique identifier for the account that created this conference.
- `ConferenceSid` (string, required) — The unique identifier for the conference this participant is in.
- `CallSid` (string, required) — The unique identifier for the Participant call connected to this conference.

### Body (application/x-www-form-urlencoded)

This endpoint expects an UpdateConferenceParticipantRequest.

- `AnnounceUrl` (string, optional) — The URL to send conference announcements to.
- `AnnounceMethod` (enum, optional, default: POST) — Whether the request to `AnnounceUrl` is a `GET` or a `POST`. Default is `POST`.
  - Allowed values: `GET`, `POST`
- `Coaching` (boolean, optional) — Whether the participant is coaching another call. Requires `CallSidToCoach` to be set.
- `CallSidToCoach` (string, optional) — The unique identifier of the participant who is being coached. Required when `Coaching` is true.
- `Hold` (boolean, optional) — Whether or not a participant is on hold.
- `HoldMethod` (enum, optional, default: GET) — Whether the request to `HoldUrl` is a `GET` or a `POST`. Default is `GET`.
  - Allowed values: `GET`, `POST`
- `HoldUrl` (string, optional) — The URL to send hold music to that will be played when participant is on hold.
- `Muted` (boolean, optional) — Whether or not a participant is muted.
- `WaitUrl` (string, optional) — The URL for wait music to be played while a conference is not yet started.
- `WaitMethod` (enum, optional, default: POST) — Whether the request to `WaitUrl` is a `GET` or a `POST`. Default is `POST`.
  - Allowed values: `GET`, `POST`

## Response

### 200

The request has succeeded.

- `account_sid` (string, required) — The unique identifier for the account that created this conference.
- `call_sid` (string, required) — The unique identifier for the Participant call connected to this conference.
- `call_sid_to_coach` (string, required, nullable) — The unique identifier of the participant who is being coached.
- `coaching` (boolean, required) — Whether the participant is coaching another call.
- `conference_sid` (string, required) — The unique identifier for the conference this participant is in.
- `date_created` (string, required) — The date, in RFC 2822 format, this conference participant was created.
- `status` (enum, required) — The status of the conference call.
  - Allowed values: `completed`, `in-progress`
- `date_updated` (string, required) — The date, in RFC 2822 format, this conference participant was updated.
- `end_conference_on_exit` (boolean, required) — Whether or not a conference ends when a participant leaves the conference call.
- `muted` (boolean, required) — Whether or not a participant is muted.
- `hold` (boolean, required) — Whether or not a participant is on hold.
- `start_conference_on_enter` (boolean, required) — Whether or not a conference will begin when this participant enters the conference call.
- `uri` (string, required) — The URI for this conference participant.

## Errors

### 400 Bad Request Error

The request was invalid or cannot be processed. Check the error details for more information.

- `code` (integer, required) — Error code.
- `message` (string, required) — Error message.
- `more_info` (string, required) — URL for more information about the error.
- `status` (integer, required) — HTTP status code.

### 401 Unauthorized Error

Authentication failed. Please verify your credentials and try again.

- `code` (integer, required) — Error code.
- `message` (string, required) — Error message.
- `more_info` (string, required) — URL for more information about the error.
- `status` (integer, required) — HTTP status code.

### 404 Not Found Error

The requested resource was not found. Please verify the resource identifier.

- `code` (integer, required) — Error code.
- `message` (string, required) — Error message.
- `more_info` (string, required) — URL for more information about the error.
- `status` (integer, required) — HTTP status code.

### 422 Unprocessable Entity Error

The request could not be processed due to validation errors. Check the error details for more information.

- `code` (integer, required) — Error code.
- `message` (string, required) — Error message.
- `more_info` (string, required) — URL for more information about the error.
- `status` (integer, required) — HTTP status code.

## Examples

**Request**

```json
{}
```

**Response**

```json
{
  "account_sid": "b3877c40-da60-4998-90ad-b792e98472af",
  "call_sid": "b3877c40-da60-4998-90ad-b792e98472ca",
  "call_sid_to_coach": "b3877c40-da60-4998-90ad-b792e98472co",
  "coaching": false,
  "conference_sid": "b3877c40-da60-4998-90ad-b792e98472cf",
  "date_created": "Mon, 24 Sept 2018 21:00:00 +0000",
  "status": "completed",
  "date_updated": "Tue, 25 Sept 2018 20:00:00 +0000",
  "end_conference_on_exit": false,
  "muted": false,
  "hold": false,
  "start_conference_on_enter": true,
  "uri": "/api/laml/2010-04-01/Accounts/b3877c40-da60-4998-90ad-b792e98472af/Conferences/b3877c40-da60-4998-90ad-b792e98472cf/Participants/b3877c40-da60-4998-90ad-b792e98472ca.json"
}
```

**SDK Code**

```python
import requests

url = "https://your_space.signalwire.com/api/laml/2010-04-01/Accounts/AccountSid/Conferences/ConferenceSid/Participants/CallSid"

payload = ""
headers = {
    "Content-Type": "application/x-www-form-urlencoded"
}

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

print(response.json())
```

```javascript
const url = 'https://your_space.signalwire.com/api/laml/2010-04-01/Accounts/AccountSid/Conferences/ConferenceSid/Participants/CallSid';
const credentials = btoa("<project_id>:<api_token>");

const options = {
  method: 'POST',
  headers: {
    Authorization: `Basic ${credentials}`,
    'Content-Type': 'application/x-www-form-urlencoded'
  },
  body: new URLSearchParams('')
};

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"
	"net/http"
	"io"
)

func main() {

	url := "https://your_space.signalwire.com/api/laml/2010-04-01/Accounts/AccountSid/Conferences/ConferenceSid/Participants/CallSid"

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

	req.SetBasicAuth("<project_id>", "<api_token>")
	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")

	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.signalwire.com/api/laml/2010-04-01/Accounts/AccountSid/Conferences/ConferenceSid/Participants/CallSid")

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/x-www-form-urlencoded'

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.signalwire.com/api/laml/2010-04-01/Accounts/AccountSid/Conferences/ConferenceSid/Participants/CallSid")
  .basicAuth("<project_id>", "<api_token>")
  .header("Content-Type", "application/x-www-form-urlencoded")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://your_space.signalwire.com/api/laml/2010-04-01/Accounts/AccountSid/Conferences/ConferenceSid/Participants/CallSid', [
  'form_params' => null,
  'headers' => [
    'Content-Type' => 'application/x-www-form-urlencoded',
  ],
    'auth' => ['<project_id>', '<api_token>'],
]);

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

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

var client = new RestClient("https://your_space.signalwire.com/api/laml/2010-04-01/Accounts/AccountSid/Conferences/ConferenceSid/Participants/CallSid");
client.Authenticator = new HttpBasicAuthenticator("<project_id>", "<api_token>");
var request = new RestRequest(Method.POST);

request.AddHeader("Content-Type", "application/x-www-form-urlencoded");
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/x-www-form-urlencoded"
]

let request = NSMutableURLRequest(url: NSURL(string: "https://your_space.signalwire.com/api/laml/2010-04-01/Accounts/AccountSid/Conferences/ConferenceSid/Participants/CallSid")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers

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()
```