skills.rest
anthony-fdez
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designing-apis

Design REST APIs with Zod validation and consistent error responses.

Updated Aug 23, 2026
Search Tags:#error handling#api design#validation#rest#zod#nextjs
One-click install
npx skills add https://github.com/anthony-fdez/claude-skills --skill designing-apis-anthony-fdez
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: designing-apis
Source: https://github.com/anthony-fdez/claude-skills/tree/main/.claude/skills/designing-apis
Command: npx skills add https://github.com/anthony-fdez/claude-skills --skill designing-apis-anthony-fdez

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill standardizes the creation of REST APIs within a Next.js App Router environment, ensuring consistency in validation, error handling, and overall structure.

Core Features & Use Cases

  • Zod Validation: Enforces strict request and response validation using Zod schemas.
  • Consistent Error Handling: Implements a uniform error response format across all API endpoints.
  • Server-Only Utilities: Guides the secure implementation of server-side logic.
  • Use Case: When developing a new API endpoint for user registration, use this Skill to define the request schema, validate incoming data, handle potential errors gracefully, and ensure the response adheres to the defined structure.

Quick Start

Use the designing-apis skill to create a new API route handler for managing user profiles.

Frequently Asked Questions about designing-apis

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

FAQPage Schema
How do I validate request bodies and query params in Next.js App Router API routes?▼

This Skill designs REST APIs with Zod validation for request bodies and query params in Next.js App Router. It enforces strict schemas so incoming data matches expected structures before processing.

What is the best way to structure consistent error responses in a REST API?▼

A consistent error response format in a REST API should include code, message, detail, and context fields. This standardizes error handling across all endpoints for predictable client-side behavior.

How do I implement idempotency keys and cache headers in Next.js route handlers?▼

Implement idempotency keys and set cache headers directly within Next.js App Router route handlers. This manages duplicate requests and controls caching behavior for server-only utilities.

Can I use dynamic route parameters with Zod validation in Next.js API endpoints?▼

Yes, Zod validation works with dynamic route parameters in Next.js API endpoints. The system handles dynamic parameters while maintaining strict validation and consistent error shapes.

When do I need server-only utilities for REST API design in Next.js?▼

You need server-only utilities when implementing secure server-side logic in Next.js REST APIs. This ensures sensitive operations remain isolated from client-side exposure during request handling.

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