# Ssr Decode Api Query Parameters

> Decode server-side recording API query parameters.

The server-side recording /ssr/decode API uses the following request parameters.

auth\_token

* Required for all /decode requests.
* Generated from /api/viv\_signin.php.
* For more information, refer to the [Access Token Developer Guide](/vivox-core/access-token-guide/access-token-guide-toc.md.md.md).

destination\_credentials

* Required for all /decode requests.

* Generated from Amazon S3.

* Requires read and write access.

* Uses the following format:

  \{"access\_key\_id":"aws-access-id","secret\_access\_key":"aws-secret-key"}

s3\_uri

* Required for all /decode requests.

* Generated from the /ssr/subscribe response (upload\_destination).

* Uses the following format:

  s3://bucket-name/uuid/

decode\_options

* Indicates the form that you want your final subscriptions uploaded in.

* Uses the following options:

  * concat - Returns 1 wav file per user
  * poly - Returns 1 multi-tracked wav file with a user on each track