Mock Server Generator

Generate customizable mock HTTP servers with dynamic data, delay, error simulation, and OpenAPI import for API testing and development.

Create mock HTTP servers for API testing and development. Generate fake data, define endpoints, and simulate responses without a real backend.

Overview

A skill that helps developers create mock APIs quickly for testing frontend applications, prototyping, or decoupling microservices development.

Features

• Quick Server Creation: Generate a mock server with a single command
• Custom Endpoints: Define custom routes, methods, and response bodies
• Dynamic Responses: Use templates to generate realistic fake data
• Delay Simulation: Add latency to simulate real network conditions
• Error Simulation: Easily simulate 4xx/5xx error responses
• Data Persistence: Store and retrieve mock data across requests
• OpenAPI Import: Generate mocks from OpenAPI/Swagger specifications

Commands

Start a Basic Mock Server

start mock server on port 3000

Define Custom Endpoints

add GET /api/users returning [{"id": 1, "name": "John"}]
add POST /api/posts with delay 500ms

Import from OpenAPI

generate mock from https://api.example.com/openapi.json

Use Cases

• Frontend development without a backend
• API testing and test data generation
• Prototyping and demo environments
• CI/CD pipeline testing
• Microservice decoupling

Requirements

• Node.js 18+
• Optional: Docker for containerized deployment