Markprompt is a tool that allows users to quickly and easily create GPT-4 invitations for their Markdown documents. It eliminates the need for configuration, hosting and accumulation of metrics. It works with Markdown files, Markdoc and MDX, and all OPENAI complement models are supported, including GPT-4. It offers a generous free level, and users can scale with use. It also offers functions such as opinions and analysis that help to locate deficiencies in content. The source code is available on Github.