> For a complete page index, fetch https://docs.synthflow.ai/llms.txt. For full documentation content, fetch https://docs.synthflow.ai/llms-full.txt.

# Get the WebSocket media base URL

GET https://api.synthflow.ai/v2/calls/outbound-test-ws-media/base-url

Returns the region-correct WebSocket base URL (no session id) for the connect-then-bind flow. Connect to this URL first, read the `server_info` message, then start the call with `wsMediaServerName` set to the `server-name` you received. This call is stateless and does not start or reserve a call.

Reference: https://docs.synthflow.ai/api-reference/platform-api/calls/get-ws-media-base-url

## OpenAPI Specification

```yaml
openapi: 3.1.0
info:
  title: Synthflow APIs
  version: 1.0.0
paths:
  /calls/outbound-test-ws-media/base-url:
    get:
      operationId: get-ws-media-base-url
      summary: Get the WebSocket media base URL
      description: >-
        Returns the region-correct WebSocket base URL (no session id) for the
        connect-then-bind flow. Connect to this URL first, read the
        `server_info` message, then start the call with `wsMediaServerName` set
        to the `server-name` you received. This call is stateless and does not
        start or reserve a call.
      tags:
        - ''
      parameters:
        - name: Authorization
          in: header
          description: Bearer authentication
          required: true
          schema:
            type: string
      responses:
        '200':
          description: Base URL issued.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/get-ws-media-base-url_Response_200'
        '401':
          description: Missing or invalid API credentials.
          content:
            application/json:
              schema:
                $ref: >-
                  #/components/schemas/Get-ws-media-base-urlRequestUnauthorizedError
        '503':
          description: WebSocket media is not enabled in this environment.
          content:
            application/json:
              schema:
                $ref: >-
                  #/components/schemas/Get-ws-media-base-urlRequestServiceUnavailableError
servers:
  - url: https://api.synthflow.ai/v2
    description: Global
  - url: https://api.us.synthflow.ai/v2
    description: United States
  - url: https://api.eu.synthflow.ai/v2
    description: European Union
components:
  schemas:
    get-ws-media-base-url_Response_200:
      type: object
      properties:
        wsMediaBaseUrl:
          type: string
          format: uri
          description: >-
            Secure WebSocket base URL for streaming call audio, without a
            session id.
      required:
        - wsMediaBaseUrl
      title: get-ws-media-base-url_Response_200
    Get-ws-media-base-urlRequestUnauthorizedError:
      type: object
      properties: {}
      title: Get-ws-media-base-urlRequestUnauthorizedError
    Get-ws-media-base-urlRequestServiceUnavailableError:
      type: object
      properties: {}
      title: Get-ws-media-base-urlRequestServiceUnavailableError
  securitySchemes:
    sec0:
      type: http
      scheme: bearer

```

## Examples



**Response**

```json
{
  "wsMediaBaseUrl": "wss://webrtc-us.synthflow.ai/ws-audio"
}
```

**SDK Code**

```python
import requests

url = "https://api.synthflow.ai/v2/calls/outbound-test-ws-media/base-url"

headers = {"Authorization": "Bearer <token>"}

response = requests.get(url, headers=headers)

print(response.json())
```

```go
package main

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

func main() {

	url := "https://api.synthflow.ai/v2/calls/outbound-test-ws-media/base-url"

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

	req.Header.Add("Authorization", "Bearer <token>")

	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://api.synthflow.ai/v2/calls/outbound-test-ws-media/base-url")

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

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'

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.get("https://api.synthflow.ai/v2/calls/outbound-test-ws-media/base-url")
  .header("Authorization", "Bearer <token>")
  .asString();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.synthflow.ai/v2/calls/outbound-test-ws-media/base-url");
var request = new RestRequest(Method.GET);
request.AddHeader("Authorization", "Bearer <token>");
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = ["Authorization": "Bearer <token>"]

let request = NSMutableURLRequest(url: NSURL(string: "https://api.synthflow.ai/v2/calls/outbound-test-ws-media/base-url")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "GET"
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()
```