Master API Design: Build Robust Interfaces with AI Agents

Master API Design: Build Robust Interfaces with AI Agents

The Master API Design skill assists developers in creating stable and well-documented interfaces using AI coding agents like Claude Code, Cursor, and Codex. This skill is particularly useful when designing or modifying REST APIs, GraphQL schemas, and defining module boundaries.

What this skill does

• Guides the design of new API endpoints and interface changes.
• Helps in defining type contracts and module boundaries, ensuring a clear separation between frontend and backend components.
• Supports establishing database schemas that influence API structure, ensuring consistent designs across systems.
• Provides insights on planning for deprecation from the start, using principles such as Hyrum's Law to manage public contracts effectively.

Who it is for

• Software developers working on API development and integration.
• Engineering teams tasked with defining interfaces between services or modules.
• Technical leads responsible for maintaining and updating public interfaces.

Use cases

• Developers designing new REST or GraphQL API endpoints that require robust interface contracts.
• Engineering teams that need to define and maintain clear boundaries and contracts between different modules of a large application.
• Teams revisiting and altering existing public interfaces with the aim of improving stability and preventing misuse.

Technical details

• Integrates with AI coding agents: Claude Code, Cursor, and Codex for intelligent API and interface design guidance.
• Utilises best practices in API and interface design to ensure well-documented and properly managed boundaries.

Source & Licence

This package is built on open-source work published by kevinnft (kevinnft/ai-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.