API Mocker

by James Kim

Generate realistic mock APIs from OpenAPI specs. Test against fake data without a backend.

About this tool

API Mocker creates fully functional mock servers from your OpenAPI/Swagger specifications. Test your frontend against realistic data without waiting for backend teams.

Features - Auto-generates realistic fake data based on schema types - Supports OpenAPI 3.0 and 3.1 - Configurable response delays for testing loading states - Error simulation for edge case testing - Stateful mocking for CRUD operations

$10/mo

Billed monthly. Cancel anytime.

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Installation

{
  "mcpServers": {
    "api-mocker": {
      "url": "https://mcppay.com/proxy/api-mocker",
      "headers": {
        "Authorization": "Bearer YOUR_MCPPAY_API_KEY"
      }
    }
  }
}

Add this to your MCP client config file. Replace YOUR_MCPPAY_API_KEY with your API key from the dashboard.