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sandeepmvl
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rails-api-design

Generate Rails APIs with versioning, serialization, rate limiting, and error formatting.

21|2|Updated May 24, 2026
Search Tags:#api design#jwt#rest api#rails#pagy#json serialization#rack-attack
One-click install
npx skills add https://github.com/sandeepmvl/rails-skills --skill rails-api-design
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: rails-api-design
Source: https://github.com/sandeepmvl/rails-skills/tree/main/skills/06-rails-api-design
Command: npx skills add https://github.com/sandeepmvl/rails-skills --skill rails-api-design

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes assets (resource) components.

What problem does it solve?

AI coding agents frequently generate Rails APIs that skip critical production conventions, leading to technical debt, security gaps, and maintenance headaches from missing versioning, poor serialization choices, lack of rate limiting, and inconsistent error formatting.

Core Features & Use Cases

  • URL API Versioning: Implements /api/v{n} versioning for debuggable, cacheable routes, avoiding the operational pitfalls of Accept-header versioning.
  • Production Serialization: Recommends and configures jsonapi-serializer for JSON:API specs or alba for plain JSON, replacing slow, error-prone to_json calls.
  • Security & Reliability Defaults: Includes pre-built patterns for JWT/session cookie authentication, rack-attack rate limiting, structured error responses per RFC 9457 or JSON:API, secure CORS configuration, and rswag OpenAPI documentation.
  • Use Case: Use this Skill when building a new Rails::API app, adding JSON endpoints to an existing Rails monolith, or auditing an existing API for compliance with senior Rails developer best practices.

Quick Start

Use the rails-api-design skill to build a versioned, production-ready JSON API for your Rails app with proper serialization, pagination, and rate limiting configured out of the box.

Frequently Asked Questions about rails-api-design

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

FAQPage Schema
How do I add production-ready JSON API endpoints to an existing Rails monolith?▼

To add JSON API endpoints to a Rails monolith, apply URL-based versioning, configure jsonapi-serializer or alba, implement pagy pagination, and secure routes with JWT or session cookie authentication.

What is the best way to structure Rails API versioning for cacheable routes?▼

The best way to structure Rails API versioning is using URL-based versioning like /api/v{n}, which ensures routes are debuggable and cacheable, avoiding operational pitfalls associated with Accept-header versioning.

How does rack-attack rate limiting work in a Rails API?▼

Rack-attack rate limiting in a Rails API throttles incoming requests to prevent abuse, functioning as middleware to block or limit excessive traffic before it reaches your application controllers.

Can I use alba for JSON serialization instead of jsonapi-serializer in Rails?▼

Yes, you can use alba for plain JSON serialization instead of jsonapi-serializer, with the choice depending on whether you need strict JSON:API spec compliance or simpler, faster plain JSON responses.

Why should I avoid default to_json calls when building Rails REST APIs?▼

You should avoid default to_json calls because they are slow and error-prone, making production serialization difficult to maintain compared to dedicated serializers like jsonapi-serializer or alba.

How do I generate OpenAPI documentation for a Rails API?▼

You generate OpenAPI documentation for a Rails API by configuring rswag, which integrates with your tests to automatically produce and maintain API documentation specifications.

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