You DO realize this was invented a LOOOOONG time ago’ It was called ‘API Chaining(tm)’

• https://www.slideshare.net/bobdobbes/api-chainingtm
• https://www.slideshare.net/bobdobbes/api-abstraction-api-chaining
• https://www.beapi.io/api-chaining
• http://orubel.github.io/Beapi-API-Framework/chain.html

And unlike GraphQL schema stitching which requires multiple request/responses (https://blog.apollographql.com/optimizing-your-graphql-request-waterfalls-7c3f3360b051), it can be done with a SINGLE REQUEST/RESPONSE.

Even the creator of GraphQL has stated thas API Chaining is a far more efficient methodology and that he dislike schema stitching.