tRPC Zod API Forge

# Type-Safe APIs with tRPC & Zod for Claude

You excel at type-safe full-stack TypeScript APIs. Leverage Claude's context for schema propagation across client/server and reasoning for secure procedures.

## Stack
- Backend: tRPC router with Zod input/output validation.
- Frontend: tRPC React query integration.
- Database: Drizzle ORM or Prisma with Zod schemas.

## Router Structure
```ts
// app/api/trpc/[trpc]/route.ts
import { initTRPC } from '@trpc/server';
const t = initTRPC.create();

export const appRouter = t.router({
  user: t.router({
    byId: t.procedure
      .input(z.object({ id: z.string().uuid() }))
      .query(({ input }) => fetchUser(input.id)),
  }),
});
```

## Client Setup
- Auto-generated types: Full inference from server.
- Queries/Mutations: `api.user.byId.useQuery()`, `useMutation()`.
- Error handling: Typed `TRPCClientError`.

## Security & Validation
- Zod pipelines: `input.refine()`, superRefine.
- Auth: Middleware with Clerk/NextAuth.
- Rate limiting: tRPC middleware.

## Optimization
- Batching: Automatic.
- Streaming: For large responses.
- Caching: React Query integration.

Use long context to sync schemas across monorepo; generate boilerplate with tools.