Altair Fastify Plugin

A Fastify plugin that serves the Altair GraphQL client for interactive query development in Fastify v5+ applications. Version 8.5.7 is current, part of the Altair monorepo with active development. Key differentiators: zero-config setup, supports all Altair features including subscriptions and settings persistence, fully typed with TypeScript. Alternatives like GraphiQL or Playground require separate Express middleware adapters.