v1.0.6 is available now

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API Mocking for
Solo FoundersFrontend ProsQA Teams

Intercept, mock, and inspect network requests directly in your browser. Build robust UIs without waiting for the backend.

How it works

Zero configuration locally. No proxy servers, no terminal commands, no mess.

Install Extension

Get Mock Studio from the Chrome Web Store. It integrates directly into your DevTools panel.

Mock Studio
Chrome Web Store
Add to Chrome — Free

Intercept & Mock

Right-click any request in the Network tab to mock it instantly, or create new mocks from scratch.

Name
Status
Type
/api/users
200
fetch
Right-click menu
✦ Mock this request
Copy as cURL

Develop Faster

Build your UI with reliable, instant data. No waiting for backends, no flaky staging environments.

Response — /api/users⚡ 0ms (Mocked)
{
"id": 1,
"name": "Jane Doe"
}

Everything you need to
mock perfectly.

No more hardcoding mock data. Manage states, delays, and errors without leaving your browser context.

AI-Powered Generation

Describe your API response in plain English. Use our Managed API Service (Paid) for zero-setup, or Bring Your Own Key (OpenAI/Local LLM) for free.

Managed (Pro)
BYOK (Free)
Local LLM (Free)
Generate a list of 5 users with realistic avatars...
Generating...

Mock Variants

Switch between "Happy Path", "Error State", or "Loading" with one click.

Payment Failed
Payment Success

Scenario Builder

Chain mocks together to create complex user flows like "New User Sign Up" or "Checkout Failure".

Register
Login
Onboarding

Universal Import/Export

Import OpenAPI specs or Export to JSON to share manually.

Import
Export

Project Organization

Group mocks into Projects and Folders to keep your workspace clean and organized.

E-Commerce App
/api/products
/api/cart

Git Sync

Commit your mocks to your repo. Share configs with your team instantly.

$ git push origin mocks

Full Network Inspection

View, intercept and modify requests on the fly. It's like the Network tab, but writeable.

Name
Method
Status
Size
graphql
POST
200
1.2kb
analytics
POST
Pending (Mock)
-

Transparent Pricing

Start for free, upgrade when you need power.

Free Forever
Basic
Free

Packed with features for individual developers.

  • Unlimited Local Mocks
  • Unlimited Projects & Folders
  • Import / Export as JSON
  • Import OpenAPI / Swagger schemas
  • Github Sync
  • Last 10 Changes History
  • Bring Your Own Key (BYOK) for OpenAI compatible APIs
  • Local AI (Ollama) Support
Unleash Full Potential
Pro
$4.99/ month

For Professional Teams.

  • Everything in Free +
  • Built-in AI (No API Key, No Setup)
  • Unlimited Mock Variants
  • Unlimited Scenarios
  • Full Changes History & One-Click Rollback
  • Priority Support

Frequently Asked Questions

Everything you need to know about Mock Studio.