Skip to product information

Master API Design: Advanced AI Agent Skill for Claude & Codex

Master API Design: Advanced AI Agent Skill for Claude & Codex

Regular price £14.99
Regular price £14.99 Sale price
SAVE Sold out
Instant download One-time payment Lifetime access
Works withClaude CodeCursorCodexGemini CLI
Master API Design: Advanced AI Agent Skill for Claude & Codex

Master API Design: Advanced AI Agent Skill for Claude & Codex

Regular price £14.99
Regular price £14.99 Sale price
SAVE Sold out

Master API Design: Advanced AI Agent Skill for Claude & Codex

This AI agent skill assists developers in designing and reviewing HTTP/REST APIs to ensure they are consistent, evolvable, and safe to retry. It covers various aspects of API design such as resource naming, method semantics, status codes, RFC 9457 compliance, pagination, versioning, idempotency keys, ETags, rate limits, long-running operations, webhooks, and OpenAPI contracts.

What this skill does

  • Ensures the consistency and evolvability of API endpoints when creating or changing them.
  • Aids in writing and reviewing OpenAPI specifications and API pull requests.
  • Provides guidance on determining whether a change is breaking and how to implement it safely.
  • Assists in choosing the appropriate communication method — REST, GraphQL, or gRPC — for new interfaces.

Who it is for

This skill is designed for developers and teams who utilize AI coding agents like Claude Code, Cursor, and Codex, particularly those involved in API design and architecture.

Use cases

  • Introducing new API endpoints or modifying existing ones while maintaining backward compatibility.
  • Creating or revising OpenAPI documents to accurately reflect API design and functionality.
  • Reviewing API pull requests to ensure they adhere to design standards.
  • Deciding between different API paradigms (REST, GraphQL, gRPC) based on project requirements.

Technical details

The Master API Design skill leverages capabilities from agents-llm, aiapplication, and api-design to enhance the development and review process of APIs, making it an effective tool for maintaining reliable and scalable API designs.


Source & Licence

This package is built on open-source work published by reddygopalkrishna (reddygopalkrishna/developer-agent-skills) and distributed under MIT. The original licence text and copyright notice are included in your download.

Personal and commercial use, modification and redistribution are permitted, provided the original copyright and licence notice are retained.

Your purchase covers curation, licence verification, packaging, documentation and instant delivery. It does not grant exclusive rights to the underlying open-source code, which remains available under its original licence.

Delivery & Support

  • Delivery: instant — a secure download link is emailed to you as soon as payment is confirmed.
  • Format: ZIP archive containing the skill files, documentation and the original licence.
  • Support: support@mcpcart.com — we aim to reply within 2 business days.
  • Updates: updates are included only where stated on this page.

Refunds

This is a digital product delivered immediately after purchase. By completing your order you request immediate delivery and acknowledge that, once the download has been accessed, the statutory right to cancel no longer applies to the extent permitted by law. Refund requests are handled in accordance with our published Refund Policy.

Claude, Codex, Gemini and Cursor are trademarks of their respective owners. MCP Cart is an independent marketplace and is not affiliated with, endorsed by, or sponsored by any of them. Compatibility references describe interoperability only.

View full details
Reviews

Trusted by Developers & Marketers

Here's what buyers say about the skills they use every day.

Ran it on a client's Google Ads account and it flagged wasted spend we'd been missing for months. Paid for itself on day one.

Optimize Ad Spend: Ad Account Auditor
James T.
PPC Specialist, UK

We finally caught broken conversion tags before launch instead of after. The pre-launch checklist alone is worth the price.

Optimize Conversion Tracking: Pre-Launch QA
Sofia M.
Growth Marketer

Dropped it into Claude Code and my LCP went from 4.1s to 1.9s in an afternoon. It explains every fix it suggests, so I actually learned something too.

Optimize Core Web Vitals
Daniel K.
Front-end Developer

Our agency uses it as the final review step on every PR now. It catches security issues our linters never did.

Optimize Your Code: Best Practices & Security
Priya R.
Tech Lead

Made WCAG 2.2 compliance actually manageable. It walked through our whole storefront and produced a fix list our devs could work from directly.

Enhance Web Accessibility: WCAG 2.2
Laura B.
Product Manager

As an expat freelancer in France, the DGFIP simulation saved me a very expensive appointment with an accountant. Incredibly thorough.

AI Tax Audit Skill: DGFIP Fiscal Control
Mark D.
Freelance Consultant, Paris

Works with both Cursor and Claude Code exactly as advertised. Setup took less than five minutes with the included README.

Optimize Profits: AI Conversion Value Mapper
Anna W.
E-commerce Manager

Instant delivery, clean files, clear docs. This is how digital products should be sold. Already bought three more skills.

AI Comptable: French Accounting
Thomas L.
Startup Founder

Support answered my install question within a couple of hours on a Sunday. The skill itself has become part of my daily workflow.

Optimize Core Web Vitals
Yuki S.
Indie Developer