We utilized Markdoc to create a custom, extendable product onboarding at PlanetScale, aiming to provide a one-track path for developers to connect and query their databases regardless of the language or framework used. We leveraged Markdoc's Markdown-based syntax to build an interactive and personalized content experience, incorporating variables to customize user credentials and adding custom nodes to render code snippets with file attributes. This allowed us to extend the code blocks with additional functionality, such as detecting the user's operating system and selecting a certificate for secure connections. The outcome of using Markdoc has been positive, making maintenance and updates manageable, and we are excited to share our onboarding process with others who use Markdoc.