`league/oauth2-server` is a standards compliant implementation of an [OAuth 2.0](https://tools.ietf.org/html/rfc6749) authorization server written in PHP which makes working with OAuth 2.0 trivial. You can easily configure an OAuth 2.0 server to protect your API with access tokens, or allow clients to request new access tokens and refresh them.
All HTTP messages passed to the server should be [PSR-7 compliant](https://www.php-fig.org/psr/psr-7/). This ensures interoperability between other packages and frameworks.
We use [Travis CI](https://travis-ci.org/), [Scrutinizer](https://scrutinizer-ci.com/), and [StyleCI](https://styleci.io/) for continuous integration. Check out [our](https://github.com/thephpleague/oauth2-server/blob/master/.travis.yml) [configuration](https://github.com/thephpleague/oauth2-server/blob/master/.scrutinizer.yml) [files](https://github.com/thephpleague/oauth2-server/blob/master/.styleci.yml) if you'd like to know more.
Contributions are always welcome. Please see [CONTRIBUTING.md](https://github.com/thephpleague/oauth2-server/blob/master/CONTRIBUTING.md) and [CODE_OF_CONDUCT.md](https://github.com/thephpleague/oauth2-server/blob/master/CODE_OF_CONDUCT.md) for details.
If you would like help implementing this library into your existing platform, or would be interested in OAuth advice or training for you and your team please get in touch with [Glynde Labs](https://glyndelabs.com).
This package is released under the MIT License. See the bundled [LICENSE](https://github.com/thephpleague/oauth2-server/blob/master/LICENSE) file for details.
Special thanks to [all of these awesome contributors](https://github.com/thephpleague/oauth2-server/contributors).
Additional thanks go to the [Mozilla Secure Open Source Fund](https://wiki.mozilla.org/MOSS/Secure_Open_Source) for funding a security audit of this library.
The initial code was developed as part of the [Linkey](http://linkey.blogs.lincoln.ac.uk) project which was funded by [JISC](http://jisc.ac.uk) under the Access and Identity Management programme.