Instructions

Design or review Prisma data models for Next.js applications.

When to Use

• Use for Prisma schema design/review (relations, indexes, naming).
• Prefer data-layer-handbook first if ORM is undecided.
• Prefer api-handbook for HTTP shapes over the schema.

Mode A - generate schema

1. Parse the user’s plain-English domain model (entities, relationships, enums).
2. Produce schema.prisma with:
   • @@map / @map only if user prefers snake_case tables
   • IDs (cuid() or uuid() - match repo if exists)
   • indexes on foreign keys and frequent filters
3. Include migration commands: pnpm exec prisma migrate dev --name init (or match project scripts).
4. Requires user approval before writing files.