---
title: "Create a Stream"
method: POST
path: "/Accounts/{AccountSid}/Calls/{CallSid}/Streams"
tags: ["Streams"]
---

# Create a Stream

`POST /Accounts/{AccountSid}/Calls/{CallSid}/Streams`

Starts sending selected audio tracks from an active call to a secure WebSocket endpoint. Use it for live call-audio processing; use [Conference Streams](/docs/compatibility-api/rest/conference-streams/create-conference-stream) for an entire voice conference or [Video Room Streams](/docs/apis/rest/video/streams/list-room-streams) for RTMP video broadcasts.

#### 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).

## Path parameters

- `AccountSid` string, uuid, required — Universal Unique Identifier.
- `CallSid` string, uuid, required — Universal Unique Identifier.

## Response `200`

The request has succeeded.

- CallStreamResponse — Response containing a single call stream.
  - `sid` string, uuid, required — Universal Unique Identifier.
  - `account_sid` string, uuid, required — Universal Unique Identifier.
  - `call_sid` string, uuid, required — Universal Unique Identifier.
  - `name` string, required — The name of the stream.
  - `status` 'queued' | 'in-progress' | 'stopped', required — Stream status.
  - `date_updated` string, required — The date, in RFC 2822 GMT format, this stream was updated.
  - `uri` string, required — The URI for the stream.

## Other responses

- `400` — The request was invalid or cannot be processed. Check the error details for more information.
- `401` — Authentication failed. Please verify your credentials and try again.
- `404` — The requested resource was not found. Please verify the resource identifier.
- `422` — The request could not be processed due to validation errors. Check the error details for more information.
- `503` — The service is temporarily unavailable. Please try again later.

## Changes

- **2026-05-12** `2916d5e3072e` — 3 breaking, 3 info
  - the `account_sid` response's property type/format changed from `string`/`uuid` to ``/`` for status `200`
  - the `call_sid` response's property type/format changed from `string`/`uuid` to ``/`` for status `200`
  - the `sid` response's property type/format changed from `string`/`uuid` to ``/`` for status `200`
  - added `#/components/schemas/uuid` to the `account_sid` response property `allOf` list for the response status `200`
  - …2 more
- **2026-05-12** `5344c0c93a4c` — 1 breaking, 6 info
  - added 'unevaluatedProperties' constraint to the request body
  - added 'unevaluatedProperties' constraint to the response body for the status `200`
  - added 'unevaluatedProperties' constraint to the response body for the status `400`
  - added 'unevaluatedProperties' constraint to the response body for the status `401`
  - …3 more
- **2026-01-20** `dce1bcef69f0` — 3 info
  - added the non-success response with the status `404`
  - added the non-success response with the status `422`
  - added the non-success response with the status `503`
- **2026-01-19** `d5fbaaddfa3e` — 3 breaking, 3 warning, 8 info
  - the request property `Url` became required
  - the `StatusCallback` request property type/format changed from `string`/`` to `string`/`uri`
  - the `Url` request property type/format changed from `string`/`` to `string`/`uri`
  - removed the optional property `api_version` from the response with the `200` status
  - …10 more
- …earlier changes not shown

[Full history](https://skmtc.dev/signalwire/apis/compatibility-api/changes/Accounts/:AccountSid/Calls/:CallSid/Streams/post.md)

---

[API](https://skmtc.dev/signalwire/apis/compatibility-api.md) · [All operations](https://skmtc.dev/signalwire/apis/compatibility-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/signalwire/compatibility-api/revisions/723316346320/schema)