Keystone 6 is a powerful, schema-driven headless CMS and application framework for Node.js. It allows developers to define their data model in TypeScript, from which it automatically generates a full GraphQL API, a Prisma ORM layer, and a beautiful React-based Admin UI. The framework excels in its extensibility, offering a rich document editor with custom component blocks, granular access control, flexible authentication strategies, and deep integration with modern frameworks like Next.js, Remix, and Astro. This monorepo contains the core packages, a comprehensive set of examples, and extensive integration tests. While the codebase is actively maintained and demonstrates high craftsmanship, its sheer size and explicit internal instability markers indicate a medium level of technical drift in some areas.