A mock API is a fake REST API that returns sample data for testing and development. Mock APIs let frontend developers, QA teams, and product managers test integrations without a real backend. apismaker lets you create mock APIs in 60 seconds from JSON, Excel, or CSV — no code required.

How do I create a mock API for free?

Sign up at apismaker.com, pick a template or import your data (JSON, Excel, CSV), and get instant REST endpoints. No code required. You can try our free mock API demo without signing up.

What is the best free mock API generator?

apismaker is a free mock API generator that lets you create REST APIs in 60 seconds. Import JSON, Excel, or CSV. No code required. Try the demo without signup.

How do I create a fake API for testing?

Use apismaker to create a fake API for testing. Import your data (JSON, Excel, CSV) or pick a template. Get instant REST endpoints. No backend required.

Can I turn Excel into an API?

Yes. apismaker converts Excel, CSV, and JSON files into REST APIs. Upload your file, map columns to entity fields, and get working endpoints in 60 seconds.

What is a no-code API builder?

A no-code API builder lets you create APIs without writing code. apismaker is a no-code API builder. Import data or use templates to get REST endpoints instantly.

How do I create a mock API for React or frontend development?

Use apismaker to create a mock API for frontend development. Get REST endpoints in 60 seconds. No backend needed. Test your React app against real-looking API responses.

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MCP Integration

Connect Cursor, Claude Code, Claude Desktop, Windsurf, Codex, and other AI assistants to your apismaker projects. No local setup required.

Tools available

list_projects — List your projects
get_project — Get project details
create_project — Create a new project
list_apis — List APIs in a project
get_api — Get API definition
get_documentation — Get full project docs for the agent
invoke_api — Call a user-defined API
list_api_data — List data source records

Quick setup

Sign in and go to Settings → API Keys
Create a new key and copy it
Add the MCP server to your AI tool (see config below)

{
  "mcpServers": {
    "apismaker": {
      "url": "https://www.apismaker.com/api/mcp",
      "headers": {
        "Authorization": "Bearer <your-api-key>"
      }
    }
  }
}

Supported clients

Cursor, Claude Code, Claude Desktop, Windsurf, Codex, VSCode (Copilot), Zed, Cline, JetBrains — all use the same url + headers config.

Get started free