# req_client_credentials v0.3.1 - Table of Contents

## Pages

- [ReqClientCredentials](readme.md)
- [CHANGELOG](changelog.md)

## Modules

- [ReqClientCredentials](ReqClientCredentials.md): `Req` plugin for [OAuth 2.0 client credentials flow][rfc] authentication. This
plugin accepts all the options of `Req` itself under the `:client_credentials`
key. The access token will be cached and reused for subsequent requests, if
the response to the authenticated `:url` returns a 401 response then this
plugin will refresh the access token (only refreshes one time). If an
`:audience` is included in `:form` or `:json` option for `:client_credentials`
then this plugin will only run if the host and port of the authenticated
`:url` match that of the `:audience`. The `:url` option within
`:client_credentials` is the URL this plugin will make a POST request to for
creating a bearer token.