ApiMocker
GitHubRead the docs
Available nowFree API, no signup or key

The mock REST API
built for frontend work.

Build against realistic users, posts, todos, and comments. Practice CRUD, test loading and error states, and get useful JSON with one request.

Explore the free APIOpen a live response
curl https://api.apimocker.com/posts/1

10Users
100Posts
200Todos
500Comments

Drop-in mock data for the frontend stack you already use

ReactVueAngularSvelteNext.jsVanilla JS
Free shared API

Useful REST behavior without
the disposable backend.

Learn fetch, build tutorials, prototype interfaces, and test frontend states. The shared data resets every day at midnight UTC.

One public base URL

Realistic resources, ready in one request.

Use full CRUD, filtering, sorting, pagination, search, relationships, and post likes from any HTTP client.

/users/posts/todos/comments

No account or token

Call public endpoints directly from a browser, terminal, course project, or frontend app.

Predictable resets

The shared API returns to its seeded state every 24 hours, so experiments do not linger forever.

Built for UI states

Simulate delays and common errors, then combine search, filtering, sorting, and pagination.

In development - not available yet

Private environments are planned.

Isolated data and dedicated reset snapshots are still being developed and cannot be provisioned yet.

course-dashboard
Development preview with no public access
A familiar REST contract

Readable request.
Realistic response.

Single-resource endpoints return the resource directly. Posts include the current nested user summary, so relationship-driven interfaces can start immediately.

  • Current seeded post title and body
  • Nested user ID, name, username, and email
  • No SDK, account, or configuration
Request GET /posts/1 →
GET /posts/1200 OK
{
  "id": 1,
  "title": "Getting Started with Modern Web Development: A Practical First Project",
  "body": "This is a comprehensive article about getting started with modern web development.",
  "userId": 1,
  "user": {
    "id": 1,
    "name": "John Doe",
    "username": "johndoe",
    "email": "john.doe@example.com"
  }
}

Reset-generated timestamp fields are omitted for readability.

API overview

Enough behavior to build the whole interface.

Base URL: https://api.apimocker.com

Core resources supportGETPOSTPUTPATCHDELETE

Test edge states

Add controlled latency or request known error responses without changing your frontend code.

/posts?_delay=2000
Free API now. Private environments later.

Use the shared API today. Isolation is still being built.

Developer and Classroom environments are not available yet. There is no signup, billing, public beta, or customer provisioning.

Available now
Free API

$0 public access

Shared data for learning, examples, tutorials, and frontend prototypes.

  • All four public resources
  • CRUD, search, filters, and pagination
  • Daily data reset
  • No account or API key
Use the free API
Not available yet
Developer environment

In development planned environment

A planned isolated environment for demos, portfolios, and side projects that need stable mock data.

  • 25,000 requests per month
  • 120 requests per minute
  • 1,000 records per resource
  • Dedicated reset snapshot
View development details
Not available yet
Classroom environment

In development planned environment

Planned higher limits for courses, workshops, cohorts, and teaching teams.

  • 100,000 requests per month
  • 240 requests per minute
  • 2,000 records per resource
  • Dedicated reset snapshot
View development details

These are development targets, not active plans or purchase options.

Your next fetch starts here

Build the interface.
Use the mock data that is ready now.

Make your first request in seconds. No signup, token, or SDK required.

Open GET /posts/1View source on GitHub