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api-contract-design

Design machine-readable OpenAPI 3.1 specifications for backend and frontend contracts.

1|Updated Jun 20, 2026
Search Tags:#architecture#openapi#rest#governance#api-first#contract-design
One-click install
npx skills add https://github.com/shafibabar/SDLC-Artifact-Factory --skill api-contract-design-shafibabar
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: api-contract-design
Source: https://github.com/shafibabar/SDLC-Artifact-Factory/tree/main/skills/api-contract-design
Command: npx skills add https://github.com/shafibabar/SDLC-Artifact-Factory --skill api-contract-design-shafibabar

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) and assets (resource) components.

What problem does it solve?

This skill solves the problem of inconsistent, poorly documented, and code-coupled API development by enforcing an API-First design methodology where the contract is the source of truth.

Core Features & Use Cases

  • Standardized OpenAPI 3.1 Design: Ensures all API contracts follow a strict, machine-readable standard for resource naming, versioning, and error handling.
  • Governance and Consistency: Provides a structured review checklist and validation scripts to ensure architectural compliance before implementation begins.
  • Advanced Pattern Implementation: Guides the design of complex interactions like long-running operations, optimistic concurrency with ETags, and partial updates via field masks.

Quick Start

Use the api-contract-design skill to scaffold a new contract summary for the Compliance Engine service within the data-estate-mapping product.

Frequently Asked Questions about api-contract-design

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

FAQPage Schema
What is API-First contract design and when do I need an OpenAPI specification?▼

API-First contract design establishes a machine-readable OpenAPI specification as the source of truth before coding begins. You need it to decouple backend and frontend development, ensuring strict consistency in resource naming, versioning, and error handling.

How do I design an OpenAPI 3.1 contract that handles complex interactions like long-running operations?▼

To design an OpenAPI 3.1 contract for complex interactions, apply architectural patterns for long-running operations, optimistic concurrency with ETags, and partial updates via field masks. This ensures robust, machine-readable API specifications for advanced use cases.

Can I use this approach to enforce API governance and consistency across multiple services?▼

Yes, API-First contract design enforces API governance and consistency by applying a structured review checklist and validation scripts. This validates your OpenAPI contracts against strict architectural quality criteria before any implementation begins.

What's the best way to ensure my REST API contract follows domain-driven ubiquitous language?▼

To ensure your REST API contract follows domain-driven ubiquitous language, generate machine-readable OpenAPI 3.1 specifications that strictly adhere to domain-driven design principles and validate them against provided architectural quality criteria.

Do I need specific architectural inputs to scaffold a new OpenAPI contract?▼

Yes, you need defined architectural quality criteria and a domain-driven ubiquitous language context. These inputs are required to scaffold a new contract summary and generate a valid, authoritative OpenAPI specification between engineering teams.

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