Vulcain
Fast and idiomatic client-driven REST APIs
...It supports hypermedia APIs but also any "legacy" API by documenting its relations using OpenAPI. The protocol has been published as an Internet-Draft that is maintained in this repository. A reference, production-grade, implementation gateway server is also available in this repository. It's free software (AGPL) written in Go. A Docker image is provided. Current solutions for these problems (GraphQL, JSON:API's embedded resources and sparse fieldsets, etc.) are smart network hacks for HTTP/1. But these hacks come with (too) many drawbacks when it comes to HTTP cache, logs and even security. ...