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API Mock Generator - Instant Mock Server

Under maintenance

Try for free

🔥 7-DAY LAUNCH SPRINT (May 1–8, 2026): First 100 runs free for new users. Generate realistic mock API responses from JSON schemas or OpenAPI specifications. Create test fixtures, simulate API endpoints, and generate sample data for frontend development.

Pricing

Pay per usage

Rating

0.0

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Developer

2x lazymac

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Monthly active users

4 days ago

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API Mock Generator

Describe your API in English. Get a running mock server. Generate mock API servers instantly from OpenAPI specs or natural language descriptions. MCP-enabled for AI coding agents.

Quick Start

npm install
npm start

MCP Tools

Tool	Description
`mock_from_openapi`	Generate mock server from OpenAPI 3.x spec
`mock_from_description`	Generate mock from natural language (e.g., "todo app with users, todos, auth")
`generate_types`	Generate TypeScript interfaces
`generate_client`	Generate fetch-based API client SDK
`mock_config`	Configure delay, error rates, pagination

Features

Zero external API dependencies — all data generation is built-in
Contextual fake data — names for name fields, emails for email fields, dates for timestamps
CRUD endpoints — auto-generated list, get, create, update, delete
Pagination — built-in page/limit support on list endpoints
Request logging — GET /_logs to inspect all requests
Error simulation — configurable error rate for resilience testing
Response delay — simulate slow networks
TypeScript types — generate interfaces for all resources
Client SDK — ready-to-use fetch-based API client

Install

$npm i @lazymac/api-mock-generator

As MCP Server

{
  "mcpServers": {
    "api-mock-generator": {
      "command": "node",
      "args": ["node_modules/@lazymac/api-mock-generator/src/main.js"]
    }
  }
}

License

MIT

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Regex Toolkit - Test, Explain, Benchmark

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🔥 7-DAY LAUNCH SPRINT (May 1–8, 2026): First 100 runs free for new users. Test regular expressions against sample text, get human-readable pattern explanations, find all matches with capture groups, and benchmark pattern performance. Supports common regex presets.

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