Which mock server runtimes are supported?

The skill supports industry-standard tools including Prism (Stoplight), MSW (Mock Service Worker), WireMock, and json-server.

Does the mock server maintain state?

It can be configured with stateful logic so that POST requests create records in memory, which can then be retrieved via GET or updated via PUT during a test session.

How does this skill generate mock data?

It uses Faker.js alongside your OpenAPI schema definitions to generate realistic, type-safe data such as names, emails, and dates for all endpoints.

Can I test error handling with these mocks?

Yes, the skill allows you to configure specific request patterns to return 400, 401, 404, 429, or 500 error codes to test your application's resilience.

API Mocking & Testing

Name: API Mocking & Testing
Author: micsapp

bymicsapp

0•

Desarrollo de API

Generates realistic, schema-compliant mock API servers from OpenAPI specifications to accelerate parallel frontend and backend development.

This skill enables developers to quickly spin up functional mock servers based on OpenAPI 3.0+ definitions, bridging the gap between frontend and backend teams. It goes beyond static JSON by incorporating Faker.js for realistic data, simulating network latency, and supporting stateful CRUD operations to mimic actual backend behavior. Whether you need to test error scenarios, record requests for contract testing, or provide a stable environment for integration tests, this skill automates the setup of tools like Prism, MSW, and WireMock, ensuring your development environment remains isolated and efficient.

Características Principales

010 GitHub stars

02OpenAPI-to-Mock generation with schema-compliant response data

03Request recording and logging for contract testing validation

04Configurable network latency and error scenario simulation (4xx, 5xx)

05Dynamic data generation using Faker.js for names, emails, and dates

06Stateful CRUD behavior for realistic integration testing flows

Casos de Uso

01Creating isolated environments for integration and E2E testing without external dependencies

02Validating client-side error handling by simulating various HTTP failure codes

03Unblocking frontend development while backend APIs are still under construction

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add micsapp/micstec-skills mocking-apis

For use in Claude.ai and ChatGPT

Características Principales

010 GitHub stars

02OpenAPI-to-Mock generation with schema-compliant response data

03Request recording and logging for contract testing validation

04Configurable network latency and error scenario simulation (4xx, 5xx)

05Dynamic data generation using Faker.js for names, emails, and dates

06Stateful CRUD behavior for realistic integration testing flows

Casos de Uso

01Creating isolated environments for integration and E2E testing without external dependencies

02Validating client-side error handling by simulating various HTTP failure codes

03Unblocking frontend development while backend APIs are still under construction