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name: markdowntown-backend description: Backend API routes, Prisma schema/migrations, and server-side validation patterns for markdowntown. Use when editing Next.js App Router API handlers, Prisma models/migrations, auth/session gating, rate limits, cache revalidation, or backend validation logic.

markdowntown-backend

Core workflow

1. Identify whether the change is an API route, a data-model change (Prisma), or validation logic.
2. For API routes, confirm auth/rate-limits + response shape and cache tag invalidation.
3. For Prisma changes, update prisma/schema.prisma, run migrations/generate, and update callers.
4. For validation updates, reuse shared validators and keep error messages consistent.
5. Run compile/lint/unit tests; update API tests if response shapes change.

Quick map

• API routes: src/app/api/**/route.ts
• Auth gating: src/lib/requireSession.ts, src/lib/auth.ts
• Rate limiting + abuse logging: src/lib/rateLimiter.ts, src/lib/reports.ts
• Prisma client: src/lib/prisma.ts
• Prisma schema + migrations: prisma/schema.prisma, prisma/migrations/*
• Cache tags + revalidation: src/lib/cacheTags.ts, src/lib/revalidate.ts, src/lib/cache.ts
• Validation: src/lib/validation.ts, src/lib/skills/skillValidate.ts, src/lib/uam/uamValidate.ts, src/lib/uam/uamLint.ts

Guardrails

• Keep API responses deterministic; use NextResponse.json with explicit status codes.
• When mutating data, call safeRevalidateTag for list/detail tags and landing.
• Do not bypass requireSession for private routes; keep 401 responses consistent.
• Avoid direct Prisma access from UI components; use API routes or server utilities.

References

• docs/DEV_ONBOARDING.md
• docs/MIGRATIONS.md
• docs/architecture/architecture.md
• docs/architecture/security-public-rendering.md
• codex/skills/markdowntown-backend/references/api-routes.md
• codex/skills/markdowntown-backend/references/prisma.md
• codex/skills/markdowntown-backend/references/validation.md