GraphQL

https://graphql.org/

https://github.com/graphql

Playground app: https://github.com/graphql/graphql-playground

Uses HTTP GET and POST methods. See https://graphql.org/learn/serving-over-http/#http-methods-headers-and-body

Template with GraphQL API, PostgreSQL, React, Relay, Material UI: https://github.com/kriasoft/relay-starter-kit

https://www.linkedin.com/feed/update/urn:li:activity:7019044524442198016 → Recommends jsonapi instead