secure-nextjs-api-routes

Secure Next.js 13+ API routes with authentication, rate limiting, and CSRF protection.

Updated Apr 21, 2026
One-click install
npx skills add https://github.com/HuuBar/skill-routing-experiment --skill secure-nextjs-api-routes-huubar
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: secure-nextjs-api-routes
Source: https://github.com/HuuBar/skill-routing-experiment/tree/main/unified_skills/vishal/secure-nextjs-api-routes
Command: npx skills add https://github.com/HuuBar/skill-routing-experiment --skill secure-nextjs-api-routes-huubar

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill provides a reusable, composable security layer for Next.js 13+ App Router API routes, addressing authentication, rate limiting, CSRF protection, audit logging, and secure headers to reduce common web vulnerabilities.

Core Features & Use Cases

  • Authentication enforcement: protect endpoints by requiring valid user sessions.
  • Rate limiting and size controls: throttle requests and enforce body size limits to prevent abuse.
  • CSRF protection and audit logging: defend state-changing operations and track security events for compliance.
  • Security headers and CORS: automatically set robust headers to harden API responses and support safe cross-origin usage.
  • Use cases include securing public and private API routes, building authenticated dashboards, and protecting microservices endpoints.

Quick Start

Wrap your API route with withSecurity and a preset to enable authentication, rate limiting, and CSRF protection.

Frequently Asked Questions about secure-nextjs-api-routes

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I secure Next.js API routes with authentication and rate limiting?

Securing Next.js API routes is achieved by applying a composable security middleware that enforces authentication, rate limiting, and body size controls. Wrapping endpoints with a security middleware applies these protections automatically to prevent abuse.

What is CSRF protection and how does it work for Next.js App Router endpoints?

CSRF protection for Next.js App Router endpoints defends state-changing operations by validating tokens. A security middleware manages CSRF tokens to block unauthorized cross-site requests targeting your API routes.

Can I use security middleware with Next.js 13 App Router and Supabase?

Yes, this security middleware supports Next.js 13+ App Router API endpoints and integrates directly with a Supabase-backed user system. It uses presets to configure authenticated access levels easily for your application.

How do I add audit logging and secure headers to Next.js APIs?

Adding audit logging and secure headers to Next.js APIs involves wrapping routes with a security middleware that tracks security events and automatically sets robust HTTP headers. This hardens API responses for compliance and safety.

What is the best way to throttle requests and limit body size in Next.js APIs?

The best way to throttle requests and limit body size in Next.js APIs is using a composable security middleware. It applies rate limiting and enforces body size limits to protect endpoints from abuse and oversized payloads automatically.

Does Next.js security middleware support public and private API routes?

Yes, Next.js security middleware supports both public and private API routes through modular presets. You can configure endpoints as PUBLIC, AUTHENTICATED, or STRICT to control access levels and apply custom method restrictions.