skills.rest
cornmanwtf
cornmanwtfCOMMUNITY
Explore all skills by this author →
GitHub

contract-first-api-development

Author OpenAPI and AsyncAPI specifications and generate mock servers.

Updated Jan 16, 2026
Search Tags:#api design#openapi#api development#asyncapi#contract first#mock server
One-click install
npx skills add https://github.com/cornmanwtf/ABANG-COLEK --skill contract-first-api-development
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: contract-first-api-development
Source: https://github.com/cornmanwtf/ABANG-COLEK/tree/main/skills/architecture-design/contract-first-api-development
Command: npx skills add https://github.com/cornmanwtf/ABANG-COLEK --skill contract-first-api-development

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill streamlines API development by enabling the authoring of OpenAPI/AsyncAPI specifications, defining contracts, and generating mock servers.

Core Features & Use Cases

  • API Specification Authoring: Create or update OpenAPI (for REST) or AsyncAPI (for event-driven) specifications.
  • Contract Definition: Clearly define request/response schemas, parameters, and event payloads.
  • Mock Server Generation: Quickly spin up mock servers based on the defined specifications for frontend development and testing.
  • Use Case: A backend team needs to define a new REST API for user authentication. They use this Skill to write the OpenAPI spec, which is then shared with the frontend team to start building their UI while the backend is still under development.

Quick Start

Use the contract-first-api-development skill to create an OpenAPI 3.0 specification for a new user registration endpoint.

Frequently Asked Questions about contract-first-api-development

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

FAQPage Schema
How do I design APIs using a contract-first methodology with OpenAPI?▼

Contract-first API development involves authoring OpenAPI or AsyncAPI specifications to define schemas and endpoints before writing code. This Skill facilitates creating those API contracts and validating them against design best practices to streamline development.

How do I generate a mock server from an OpenAPI specification?▼

You generate a mock server from an OpenAPI specification by defining request and response schemas within the contract. This Skill quickly spins up mock endpoints based on your specs, enabling parallel frontend and backend development.

When should I use AsyncAPI instead of OpenAPI for API development?▼

Use AsyncAPI instead of OpenAPI when designing event-driven APIs rather than REST APIs. This Skill supports authoring AsyncAPI specifications to define event payloads, complementing its OpenAPI support for synchronous request-response contract definitions.

Can I define request and response schemas for parallel frontend and backend development?▼

Yes, you define request and response schemas within an API contract to enable parallel development. This Skill allows backend teams to share OpenAPI specs with frontend teams, who then use generated mock servers to build UIs immediately.

What is the best way to validate API designs against defined schemas?▼

Validating API designs against defined schemas requires adhering to API design best practices during specification authoring. This Skill ensures your OpenAPI and AsyncAPI contracts are validated against the defined schemas you specify.

Related Skills

Explore More Software Engineering Skills→
Prathmesh2000Prathmesh2000
1

contract-designer

Define service contracts with OpenAPI and AsyncAPI before implementation.

Community
Advanced
sitharaj88sitharaj88
1

generate-endpoint

Generate RESTful API endpoint handlers with routes, validation, and tests.

Community
Advanced
AI-SafeterAI-Safeter
10

api-documenter

Generate API documentation from OpenAPI and AsyncAPI specifications.

Community
Advanced
LLLLimboLLLLimbo

openapi-spec-generation

Generate and maintain OpenAPI 3.1 specifications from code and design-first inputs.

Community
Intermediate