Markprompt is a convenient tool that enables users to effortlessly create a GPT-4 prompt for their Markdown documents. By removing the hassle of configuration, hosting, and metrics collection, Markprompt streamlines the process. It seamlessly integrates with Markdown, Markdoc, and MDX files, supporting all OpenAI completion models, including GPT-4. Featuring a generous free-tier, users can easily scale up based on their needs. Additionally, Markprompt offers helpful features like feedback and analytics to identify areas for content improvement. For those interested, the source code can be found on GitHub.