GraphQL

 GraphQL  is a query language for APIs and a runtime for fulfilling those queries with existing data. In terms of the IndieWeb it could be used to retrieve your posts from your site database or other backend.

IndieWeb Examples

 * Together Server is a GraphQL server that acts as a bridge Micropub and Microsub.

Brainstorming

 * Create a web service which allows any website marked up with MF2 to be queried using GraphQL. For inspiration, see CoolQLCool