GraphQL Playground Koa Middleware
JSON →Koa middleware for exposing the GraphQL Playground IDE endpoint. Current stable version is 1.6.22. Maintained as part of the graphql-playground project (formerly graphcool). Key differentiator: provides an interactive GraphQL IDE with subscription support, docs, and collaboration features. Security vulnerability in versions <1.6.15 due to unsanitized user input. Ships TypeScript types. Peer dependency on Koa v2.