🚀 Dynamic Mock API

A powerful, flexible mock server to simulate REST & GraphQL APIs with customizable behavior—ideal for frontend development, integration testing, and rapid prototyping.

🌟 What Is It?

Dynamic Mock API lets you:

• Define endpoints via a web interface
• Return custom JSON responses
• Simulate authentication, rate limits, delays, and more
• Mock GraphQL queries and mutations
• Use dynamic variables in responses

Whether you're building web apps, mobile clients, or testing backend integrations—this tool helps you simulate real-world APIs effortlessly.

✨ Key Features

⚙️ Installation & Setup

🔧 Prerequisites

• Rust: Install Rust
• Node.js + npm: Install Node.js (LTS version recommended)

🏗️ Build & Run

Linux / macOS

cd mockiapi
chmod +x init.sh
./init.sh

Windows

double-click init.bat

Access the App

Open your browser: http://localhost:3001

📚 Usage Examples

1️⃣ Register a Simple GET Endpoint

Create a file hello.json:

{ "message": "Hello, world!" }

Register in UI:

2️⃣ Dynamic Response Variables

{
  "message": "Hello, {{name}}!",
  "user_id": "{{id}}",
  "requested_item": "{{item}}",
  "timestamp": "{{timestamp}}"
}

Register in UI:

Request:

GET /api/user/123/item/laptop?name=John

Response:

{
  "message": "Hello, John!",
  "user_id": "123",
  "requested_item": "laptop",
  "timestamp": "2025-03-31T12:00:00Z"
}

3️⃣ GraphQL Mock Example

Check graphql.json in uploads folder

Request:

{ "query": "query getUser { id name email }" }

Or:

{ "query": "mutation createUser { success user { id name email } }" }

Response (automatically matched):

{
  "data": {
   "id": "123",
   "name": "Alice",
   "email": "alice@example.com"
  }
}

1️⃣ Simulate a gRPC Call

You can simulate gRPC service methods via HTTP by registering an endpoint with the following structure:

Example: POST /grpc → will be the default endpoint

Fill the form with the information required and register the following json:

{
  "id": "b123",
  "title": "The Rust Programming Language",
  "author": "Steve Klabnik"
}

Then do a POST to /grpc with the following request body:

{
  "service": "com.example.BookService",
  "rpc": "GetBook",
  "request": { "id": "b123" }
}

The response will be the contents of the json registered

🧠 Why Use This?