When we built Facebook's mobile applications, we needed a data-fetching API powerful enough to describe all of Facebook, yet simple enough to be easy to learn and use by our product developers. We developed GraphQL three years ago to fill this need. Today it powers hundreds of billions of API calls a day. This year we've begun the process of open-sourcing GraphQL by drafting a specification, releasing a reference implementation, and forming a community around it at graphql.org.

https://code.facebook.com/posts/1691455094417024/graphql-a-data-query-language/

There's already a package to use GraphQL with Laravel.