Project config example for Graphql Playground App ( https://github.com/prisma/graphql-playground )

.graphqlconfig.yml

# For Graphql Playground
# Steps in Toolbar:
#   Workspace > New Workspace > select a folder containing this file
#
# example: https://github.com/prisma/graphql-playground/pull/757/files
#
# NOTE for .env 
#   prepare .env with following content, in same directory as .graphqlconfig.yml
# GH_TOKEN=paste-my-github-token-here
# AIA_TOKEN_LOCAL=paste-aia-token-here

projects:
  AIA:
    extensions:
      endpoints:
        LOCAL:
          url: http://localhost:8080/graphql
          headers:
            Authorization: Bearer ${env:AIA_TOKEN_LOCAL}
  GitHub:
    extensions:
      endpoints:
        APIv4:
          url: https://api.github.com/graphql
          headers:
            Authorization: Bearer ${env:GH_TOKEN}