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api-contract-design

Design and review REST, GraphQL, and internal API contracts with versioning and validation patterns.

2|Updated Apr 3, 2026
Search Tags:#design#versioning#api#validation#rest#graphql#contract
One-click install
npx skills add https://github.com/kscius/KS-Cursor-Orchestrator --skill api-contract-design-kscius
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: api-contract-design
Source: https://github.com/kscius/KS-Cursor-Orchestrator/tree/main/skills/api-contract-design
Command: npx skills add https://github.com/kscius/KS-Cursor-Orchestrator --skill api-contract-design-kscius

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Designing robust API contracts for REST, GraphQL, and internal service boundaries to prevent breaking changes and misalignments across teams.

Core Features & Use Cases

  • Establish public API contracts (OpenAPI, GraphQL schemas, or TypeScript types) as the single source of truth.
  • Enforce versioning, deprecation strategies, boundary validation, and consistent response envelopes.
  • Use cases include designing new endpoints, reviewing evolving contracts, and validating integration boundaries across services.

Quick Start

Define and document a new API contract with explicit request/response shapes and versioning guidance for a new service.

Frequently Asked Questions about api-contract-design

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

FAQPage Schema
How do I design an API contract to prevent breaking changes across teams?▼

To design a robust API contract, establish a public schema as the single source of truth using standards like OpenAPI or GraphQL. This prevents integration issues by enforcing explicit request and response shapes for all evolving services.

What is the best way to version REST and GraphQL APIs during contract review?▼

The best way to version API contracts is by applying explicit versioning rules and deprecation strategies within your schema standards. This ensures evolving REST and GraphQL boundaries remain stable and prevents misalignments across internal service teams.

Does this approach work for both REST and GraphQL internal service boundaries?▼

Yes, this API contract approach works directly with REST, GraphQL, and internal service boundaries. It standardizes validation patterns and data-envelope conventions across diverse architectures to prevent breaking changes and misalignments.

How do I validate request and response envelopes when designing new endpoints?▼

You validate new endpoints by defining explicit request and response shapes within your API contract using OpenAPI or GraphQL schemas. This enforces boundary validation and consistent data envelopes across all service integrations.

When do I need to establish a public API contract as a single source of truth?▼

You need a public API contract when designing new endpoints, reviewing evolving contracts, or validating integration boundaries across teams. It acts as the single source of truth to prevent misalignments and integration failures.

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