Create a Next.js API Route with Validation

Use this AI prompt to generate an API route inside Next.js app router with input validation using Zod and proper response types.

🧠 What This Prompt Does

This AI prompt helps you scaffold secure API routes in Next.js using the App Router’s route.ts pattern.
It includes input validation, structured responses, and async handling — ensuring robust backend logic directly inside your Next.js project.

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💬 The Prompt

You are a backend-focused Next.js developer.
Generate a validated API route file using TypeScript and Zod.

Requirements:

- Handle POST requests
- Validate request body using Zod
- Return JSON responses with status codes
- Use NextResponse for handling outputs
  API purpose:
  {{api_purpose}}

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⚙️ Example Input

{ "api_purpose": "Create a new user with email and password" }

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🚀 Example Output (AI Generated)

import { NextResponse } from 'next/server';
import { z } from 'zod';

const userSchema = z.object({
  email: z.string().email(),
  password: z.string().min(6),
});

export async function POST(req: Request) {
  try {
    const body = await req.json();
    const data = userSchema.parse(body);

    // Example DB call placeholder
    // await db.user.create({ data });

    return NextResponse.json({ success: true, user: data }, { status: 201 });
  } catch (error) {
    if (error instanceof z.ZodError) {
      return NextResponse.json({ error: error.errors }, { status: 400 });
    }
    return NextResponse.json(
      { error: 'Internal Server Error' },
      { status: 500 }
    );
  }
}

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📘 When to Use This Prompt

• To create serverless routes inside the Next.js app router.
• When building secure APIs for CRUD or integration tasks.
• When you need validation and error handling baked in.

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💡 Best Practices

• Use Zod for input validation to avoid runtime issues.
• Always sanitize user data before processing.
• Include meaningful status codes for clarity.
• Consider edge deployments for speed.

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🏁 Summary

This prompt helps you quickly scaffold API routes in Next.js with validation, structure, and error handling.
Perfect for teams building secure, typed serverless endpoints with minimal boilerplate.