OpenAPI 3.1, Prisma Schema, and Mermaid Diagrams: All from One AI Prompt

When you start a new backend project, you need several things to be true simultaneously: the API contract needs to match the database schema, the database schema needs to match the data model in your head, and your diagrams need to reflect all of the above. In practice, these three artifacts drift apart almost immediately - because they're authored in different tools, at different times, by different people.