MCP-ready · new

API mocks in seconds, right from your IDE.

Spin up reliable fake endpoints with natural language. Plug into Claude Code, Cursor and VS Code via MCP and test integrations without waiting on backend.

● No credit card● Free access during Beta

Works with

CClaude CodeCCursorVVS CodeWWindsurfZZed

Why mockonline

Everything you need to test APIs painlessly

Reliable mocks, low latency, native integration with your workflow.

Describe and ship

Describe the endpoint in plain English and mockonline drafts the schema, data and responses.

Stable endpoints

Versioned URLs responding in <40ms with HTTPS and CORS pre-configured.

MCP-native

Create, list and delete mocks straight from your IDE using AI. No context switching.

No code required

Visual dashboard to tweak responses, status codes, headers and simulated delays.

Inside the product

The panel where you run your mocks

Endpoint list, response editing and MCP integration — all in one place.

SyncExportNew endpoint

Active endpoints56 total

Base URL https://mockonline.com.br/m/3f2a

Method	Name	Endpoint
GET	List products	/api/products	200
GET	Get product	/api/products/:id	200
POST	Create order	/api/orders	201
PATCH	Update profile	/api/users/:id/profile	200
PUT	Update user	/api/users/:idpaused	200
DEL	Remove from cart	/api/cart/:id	204

Open the dashboard

Model Context Protocol

Use it inside Claude Code, Cursor and VS Code

Coming soon

Connect mockonline to your favourite AI assistant. Create endpoints, list active mocks and clean up — all by text inside your editor.

Create mocks by describing what you need
List and inspect active endpoints
Delete or version mocks in your flow

CClaude Code

CCursor

VVS Code

WWindsurf

ZZed

CContinue

Coming soon

MCP integration is under construction. We'll let you know the moment it's ready.

claude-desktop.jsonJSON

{
  "mcpServers": {
    "mockonline": {
      "command": "npx",
      "args": ["@mockonline/mcp"],
      "env": {
        "MOCKONLINE_API_KEY": "mok_••••••••"
      }
    }
  }
}
// ➜ create_mock, list_mocks, delete_mock
// ➜ get_endpoint_logs, update_response

Questions

Frequently asked

A fake endpoint that responds like the real backend would. You use it to develop and test the frontend (or another service) without waiting for the backend team to ship.

MCP (Model Context Protocol) is an open standard for tools to talk to AI assistants. mockonline exposes tools like create_mock, list_mocks and delete_mock — say 'mock /users with 10 profiles' in Claude Code and it'll do it.

Claude Code, Cursor, VS Code (with extension), Windsurf, Zed and Continue. Any MCP-compatible client works.

Mocks are meant for dev and testing. In production use your real backend — but they work great as fallbacks or for error pages.

Yes. We generate coherent data (names, emails, prices, dates) from the schema you describe. You can pin specific values too.

Whenever you want. No fees, no calls. Your mocks become read-only on the Free plan.