NEWJSON→API in under 3 seconds

Build Frontends
Before Backends
Exist

Generate dynamic mock API endpoints instantly from JSON schemas. Keep building your frontend while the backend catches up — then swap endpoints seamlessly.

API generated

100%

No backend needed

∞

Mock endpoints

schema.json → /api/mock/users

JSON Schema

{
  "type": "object",
  "properties": {
    "id": { "type": "integer" },
    "name": { "type": "string" },
    "email": { "type": "string",
               "format": "email" },
    "role": { "enum": ["admin",
                        "user"] }
  }
}

Mock Response ✓

// Generated endpoint ready ✓
GET /api/mock/users

[
  {
    "id": 1847,
    "name": "Jordan Lee",
    "email": "j.lee@acme.io",
    "role": "admin"
  },
  {
    "id": 2031,
    "name": "Sam Rivera",
    "email": "s.rivera@acme.io",
    "role": "user"
  }
]

Mock server running · 2 endpoints active

Everything you need

Built for Frontend Velocity

Stop waiting on the backend. ApiMate gives you all the tools to build fast, test thoroughly, and integrate seamlessly.

JSON → API Conversion

Paste any JSON schema and instantly receive a fully-functional mock API endpoint — no config required.

Dynamic Endpoint Generation

Endpoints generate realistic, schema-consistent mock data. Refresh for new permutations every time.

Zero Backend Dependency

Work in complete isolation from the backend team. Your frontend never blocks on an unfinished API.

Seamless API Replacement

When your real backend is ready, swap a single base URL. No code changes on the frontend side.

Project Dashboard

Manage all your mock API projects from a clean, organized dashboard. Create, edit, and share with ease.

Simple as 1-2-3

How It Works

From JSON schema to live API endpoint in seconds. No signup friction, no infra to manage.

Input JSON Schema

Paste or write your JSON schema definition. Describe the shape of the API response you expect.

Generate Mock API

ApiMate instantly spins up a live endpoint that returns realistic, schema-valid data on every request.

Build Seamlessly

Use your mock endpoint like a real API. Build, test, iterate — then swap the URL when the backend is ready.

Build Frontends Before BackendsExist