---
title: "Get the WebSocket media base URL"
method: GET
path: "/calls/outbound-test-ws-media/base-url"
---

# Get the WebSocket media base URL

`GET /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.

## Headers

- `Authorization` string, required

## Response `200`

Base URL issued.

- GetWsMediaBaseUrlResponse200
  - `wsMediaBaseUrl` string, uri, required — Secure WebSocket base URL for streaming call audio, without a session id.

## Other responses

- `401` — Missing or invalid API credentials.
- `503` — WebSocket media is not enabled in this environment.

## Changes

- **2026-08-22** `292b6010eb31` — 1 info
  - api tag `` removed

[Change history](https://skmtc.dev/synthflow/apis/platform-api/changes/calls/outbound-test-ws-media/base-url/get.md)

---

[API](https://skmtc.dev/synthflow/apis/platform-api.md) · [All operations](https://skmtc.dev/synthflow/apis/platform-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/synthflow/platform-api/revisions/6976456ad422/schema)